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/* ECOFF debugging support. Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. Contributed by Cygnus Support. This file was put together by Ian Lance Taylor <ian@cygnus.com>. A good deal of it comes directly from mips-tfile.c, by Michael Meissner <meissner@osf.org>. This file is part of GAS. GAS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GAS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GAS; see the file COPYING. If not, write to the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #include "as.h" /* This file is compiled conditionally for those targets which use ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha ECOFF). */ #include "ecoff.h" #ifdef ECOFF_DEBUGGING #include "coff/internal.h" #include "coff/symconst.h" #include "aout/stab_gnu.h" #include "safe-ctype.h" /* Why isn't this in coff/sym.h? */ #define ST_RFDESCAPE 0xfff /* This file constructs the information used by the ECOFF debugging format. It just builds a large block of data. We support both ECOFF style debugging and stabs debugging (the stabs symbols are encapsulated in ECOFF symbols). This should let us handle anything the compiler might throw at us. */ /* Here is a brief description of the MIPS ECOFF symbol table, by Michael Meissner. The MIPS symbol table has the following pieces: Symbolic Header | +-- Auxiliary Symbols | +-- Dense number table | +-- Optimizer Symbols | +-- External Strings | +-- External Symbols | +-- Relative file descriptors | +-- File table | +-- Procedure table | +-- Line number table | +-- Local Strings | +-- Local Symbols The symbolic header points to each of the other tables, and also contains the number of entries. It also contains a magic number and MIPS compiler version number, such as 2.0. The auxiliary table is a series of 32 bit integers, that are referenced as needed from the local symbol table. Unlike standard COFF, the aux. information does not follow the symbol that uses it, but rather is a separate table. In theory, this would allow the MIPS compilers to collapse duplicate aux. entries, but I've not noticed this happening with the 1.31 compiler suite. The different types of aux. entries are: 1) dnLow: Low bound on array dimension. 2) dnHigh: High bound on array dimension. 3) isym: Index to the local symbol which is the start of the function for the end of function first aux. entry. 4) width: Width of structures and bitfields. 5) count: Count of ranges for variant part. 6) rndx: A relative index into the symbol table. The relative index field has two parts: rfd which is a pointer into the relative file index table or ST_RFDESCAPE which says the next aux. entry is the file number, and index: which is the pointer into the local symbol within a given file table. This is for things like references to types defined in another file. 7) Type information: This is like the COFF type bits, except it is 32 bits instead of 16; they still have room to add new basic types; and they can handle more than 6 levels of array, pointer, function, etc. Each type information field contains the following structure members: a) fBitfield: a bit that says this is a bitfield, and the size in bits follows as the next aux. entry. b) continued: a bit that says the next aux. entry is a continuation of the current type information (in case there are more than 6 levels of array/ptr/function). c) bt: an integer containing the base type before adding array, pointer, function, etc. qualifiers. The current base types that I have documentation for are: btNil -- undefined btAdr -- address - integer same size as ptr btChar -- character btUChar -- unsigned character btShort -- short btUShort -- unsigned short btInt -- int btUInt -- unsigned int btLong -- long btULong -- unsigned long btFloat -- float (real) btDouble -- Double (real) btStruct -- Structure (Record) btUnion -- Union (variant) btEnum -- Enumerated btTypedef -- defined via a typedef isymRef btRange -- subrange of int btSet -- pascal sets btComplex -- fortran complex btDComplex -- fortran double complex btIndirect -- forward or unnamed typedef btFixedDec -- Fixed Decimal btFloatDec -- Float Decimal btString -- Varying Length Character String btBit -- Aligned Bit String btPicture -- Picture btVoid -- Void (MIPS cc revision >= 2.00) d) tq0 - tq5: type qualifier fields as needed. The current type qualifier fields I have documentation for are: tqNil -- no more qualifiers tqPtr -- pointer tqProc -- procedure tqArray -- array tqFar -- 8086 far pointers tqVol -- volatile The dense number table is used in the front ends, and disappears by the time the .o is created. With the 1.31 compiler suite, the optimization symbols don't seem to be used as far as I can tell. The linker is the first entity that creates the relative file descriptor table, and I believe it is used so that the individual file table pointers don't have to be rewritten when the objects are merged together into the program file. Unlike COFF, the basic symbol & string tables are split into external and local symbols/strings. The relocation information only goes off of the external symbol table, and the debug information only goes off of the internal symbol table. The external symbols can have links to an appropriate file index and symbol within the file to give it the appropriate type information. Because of this, the external symbols are actually larger than the internal symbols (to contain the link information), and contain the local symbol structure as a member, though this member is not the first member of the external symbol structure (!). I suspect this split is to make strip easier to deal with. Each file table has offsets for where the line numbers, local strings, local symbols, and procedure table starts from within the global tables, and the indexs are reset to 0 for each of those tables for the file. The procedure table contains the binary equivalents of the .ent (start of the function address), .frame (what register is the virtual frame pointer, constant offset from the register to obtain the VFP, and what register holds the return address), .mask/.fmask (bitmask of saved registers, and where the first register is stored relative to the VFP) assembler directives. It also contains the low and high bounds of the line numbers if debugging is turned on. The line number table is a compressed form of the normal COFF line table. Each line number entry is either 1 or 3 bytes long, and contains a signed delta from the previous line, and an unsigned count of the number of instructions this statement takes. The local symbol table contains the following fields: 1) iss: index to the local string table giving the name of the symbol. 2) value: value of the symbol (address, register number, etc.). 3) st: symbol type. The current symbol types are: stNil -- Nuthin' special stGlobal -- external symbol stStatic -- static stParam -- procedure argument stLocal -- local variable stLabel -- label stProc -- External Procedure stBlock -- beginning of block stEnd -- end (of anything) stMember -- member (of anything) stTypedef -- type definition stFile -- file name stRegReloc -- register relocation stForward -- forwarding address stStaticProc -- Static procedure stConstant -- const 4) sc: storage class. The current storage classes are: scText -- text symbol scData -- initialized data symbol scBss -- un-initialized data symbol scRegister -- value of symbol is register number scAbs -- value of symbol is absolute scUndefined -- who knows? scCdbLocal -- variable's value is IN se->va.?? scBits -- this is a bit field scCdbSystem -- value is IN debugger's address space scRegImage -- register value saved on stack scInfo -- symbol contains debugger information scUserStruct -- addr in struct user for current process scSData -- load time only small data scSBss -- load time only small common scRData -- load time only read only data scVar -- Var parameter (fortranpascal) scCommon -- common variable scSCommon -- small common scVarRegister -- Var parameter in a register scVariant -- Variant record scSUndefined -- small undefined(external) data scInit -- .init section symbol 5) index: pointer to a local symbol or aux. entry. For the following program: #include <stdio.h> main(){ printf("Hello World!\n"); return 0; } Mips-tdump produces the following information: Global file header: magic number 0x162 # sections 2 timestamp 645311799, Wed Jun 13 17:16:39 1990 symbolic header offset 284 symbolic header size 96 optional header 56 flags 0x0 Symbolic header, magic number = 0x7009, vstamp = 1.31: Info Offset Number Bytes ==== ====== ====== ===== Line numbers 380 4 4 [13] Dense numbers 0 0 0 Procedures Tables 384 1 52 Local Symbols 436 16 192 Optimization Symbols 0 0 0 Auxiliary Symbols 628 39 156 Local Strings 784 80 80 External Strings 864 144 144 File Tables 1008 2 144 Relative Files 0 0 0 External Symbols 1152 20 320 File #0, "hello2.c" Name index = 1 Readin = No Merge = No Endian = LITTLE Debug level = G2 Language = C Adr = 0x00000000 Info Start Number Size Offset ==== ===== ====== ==== ====== Local strings 0 15 15 784 Local symbols 0 6 72 436 Line numbers 0 13 13 380 Optimization symbols 0 0 0 0 Procedures 0 1 52 384 Auxiliary symbols 0 14 56 628 Relative Files 0 0 0 0 There are 6 local symbols, starting at 436 Symbol# 0: "hello2.c" End+1 symbol = 6 String index = 1 Storage class = Text Index = 6 Symbol type = File Value = 0 Symbol# 1: "main" End+1 symbol = 5 Type = int String index = 10 Storage class = Text Index = 12 Symbol type = Proc Value = 0 Symbol# 2: "" End+1 symbol = 4 String index = 0 Storage class = Text Index = 4 Symbol type = Block Value = 8 Symbol# 3: "" First symbol = 2 String index = 0 Storage class = Text Index = 2 Symbol type = End Value = 28 Symbol# 4: "main" First symbol = 1 String index = 10 Storage class = Text Index = 1 Symbol type = End Value = 52 Symbol# 5: "hello2.c" First symbol = 0 String index = 1 Storage class = Text Index = 0 Symbol type = End Value = 0 There are 14 auxiliary table entries, starting at 628. * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0] * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0] * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0] * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0] * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0] * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0] * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0] * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0] * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0] #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0] #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] There are 1 procedure descriptor entries, starting at 0. Procedure descriptor 0: Name index = 10 Name = "main" .mask 0x80000000,-4 .fmask 0x00000000,0 .frame $29,24,$31 Opt. start = -1 Symbols start = 1 First line # = 3 Last line # = 6 Line Offset = 0 Address = 0x00000000 There are 4 bytes holding line numbers, starting at 380. Line 3, delta 0, count 2 Line 4, delta 1, count 3 Line 5, delta 1, count 2 Line 6, delta 1, count 6 File #1, "/usr/include/stdio.h" Name index = 1 Readin = No Merge = Yes Endian = LITTLE Debug level = G2 Language = C Adr = 0x00000000 Info Start Number Size Offset ==== ===== ====== ==== ====== Local strings 15 65 65 799 Local symbols 6 10 120 508 Line numbers 0 0 0 380 Optimization symbols 0 0 0 0 Procedures 1 0 0 436 Auxiliary symbols 14 25 100 684 Relative Files 0 0 0 0 There are 10 local symbols, starting at 442 Symbol# 0: "/usr/include/stdio.h" End+1 symbol = 10 String index = 1 Storage class = Text Index = 10 Symbol type = File Value = 0 Symbol# 1: "_iobuf" End+1 symbol = 9 String index = 22 Storage class = Info Index = 9 Symbol type = Block Value = 20 Symbol# 2: "_cnt" Type = int String index = 29 Storage class = Info Index = 4 Symbol type = Member Value = 0 Symbol# 3: "_ptr" Type = ptr to char String index = 34 Storage class = Info Index = 15 Symbol type = Member Value = 32 Symbol# 4: "_base" Type = ptr to char String index = 39 Storage class = Info Index = 16 Symbol type = Member Value = 64 Symbol# 5: "_bufsiz" Type = int String index = 45 Storage class = Info Index = 4 Symbol type = Member Value = 96 Symbol# 6: "_flag" Type = short String index = 53 Storage class = Info Index = 3 Symbol type = Member Value = 128 Symbol# 7: "_file" Type = char String index = 59 Storage class = Info Index = 2 Symbol type = Member Value = 144 Symbol# 8: "" First symbol = 1 String index = 0 Storage class = Info Index = 1 Symbol type = End Value = 0 Symbol# 9: "/usr/include/stdio.h" First symbol = 0 String index = 1 Storage class = Text Index = 0 Symbol type = End Value = 0 There are 25 auxiliary table entries, starting at 642. * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f] #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0] * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1] * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4] * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0] * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0] * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] There are 0 procedure descriptor entries, starting at 1. There are 20 external symbols, starting at 1152 Symbol# 0: "_iob" Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 } String index = 0 Ifd = 1 Storage class = Nil Index = 17 Symbol type = Global Value = 60 Symbol# 1: "fopen" String index = 5 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 2: "fdopen" String index = 11 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 3: "freopen" String index = 18 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 4: "popen" String index = 26 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 5: "tmpfile" String index = 32 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 6: "ftell" String index = 40 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 7: "rewind" String index = 46 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 8: "setbuf" String index = 53 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 9: "setbuffer" String index = 60 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 10: "setlinebuf" String index = 70 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 11: "fgets" String index = 81 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 12: "gets" String index = 87 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 13: "ctermid" String index = 92 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 14: "cuserid" String index = 100 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 15: "tempnam" String index = 108 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 16: "tmpnam" String index = 116 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 17: "sprintf" String index = 123 Ifd = 1 Storage class = Nil Index = 1048575 Symbol type = Proc Value = 0 Symbol# 18: "main" Type = int String index = 131 Ifd = 0 Storage class = Text Index = 1 Symbol type = Proc Value = 0 Symbol# 19: "printf" String index = 136 Ifd = 0 Storage class = Undefined Index = 1048575 Symbol type = Proc Value = 0 The following auxiliary table entries were unused: #0 0 0x00000000 void #2 8 0x00000008 char #3 16 0x00000010 short #4 24 0x00000018 int #5 32 0x00000020 long #6 40 0x00000028 float #7 44 0x0000002c double #8 12 0x0000000c unsigned char #9 20 0x00000014 unsigned short #10 28 0x0000001c unsigned int #11 36 0x00000024 unsigned long #14 0 0x00000000 void #15 24 0x00000018 int #19 32 0x00000020 long #20 40 0x00000028 float #21 44 0x0000002c double #22 12 0x0000000c unsigned char #23 20 0x00000014 unsigned short #24 28 0x0000001c unsigned int #25 36 0x00000024 unsigned long #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 } */ /* Redefinition of of storage classes as an enumeration for better debugging. */ typedef enum sc { sc_Nil = scNil, /* no storage class */ sc_Text = scText, /* text symbol */ sc_Data = scData, /* initialized data symbol */ sc_Bss = scBss, /* un-initialized data symbol */ sc_Register = scRegister, /* value of symbol is register number */ sc_Abs = scAbs, /* value of symbol is absolute */ sc_Undefined = scUndefined, /* who knows? */ sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */ sc_Bits = scBits, /* this is a bit field */ sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */ sc_RegImage = scRegImage, /* register value saved on stack */ sc_Info = scInfo, /* symbol contains debugger information */ sc_UserStruct = scUserStruct, /* addr in struct user for current process */ sc_SData = scSData, /* load time only small data */ sc_SBss = scSBss, /* load time only small common */ sc_RData = scRData, /* load time only read only data */ sc_Var = scVar, /* Var parameter (fortran,pascal) */ sc_Common = scCommon, /* common variable */ sc_SCommon = scSCommon, /* small common */ sc_VarRegister = scVarRegister, /* Var parameter in a register */ sc_Variant = scVariant, /* Variant record */ sc_SUndefined = scSUndefined, /* small undefined(external) data */ sc_Init = scInit, /* .init section symbol */ sc_Max = scMax /* Max storage class+1 */ } sc_t; /* Redefinition of symbol type. */ typedef enum st { st_Nil = stNil, /* Nuthin' special */ st_Global = stGlobal, /* external symbol */ st_Static = stStatic, /* static */ st_Param = stParam, /* procedure argument */ st_Local = stLocal, /* local variable */ st_Label = stLabel, /* label */ st_Proc = stProc, /* " " Procedure */ st_Block = stBlock, /* beginning of block */ st_End = stEnd, /* end (of anything) */ st_Member = stMember, /* member (of anything - struct/union/enum */ st_Typedef = stTypedef, /* type definition */ st_File = stFile, /* file name */ st_RegReloc = stRegReloc, /* register relocation */ st_Forward = stForward, /* forwarding address */ st_StaticProc = stStaticProc, /* load time only static procs */ st_Constant = stConstant, /* const */ st_Str = stStr, /* string */ st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */ st_Expr = stExpr, /* 2+2 vs. 4 */ st_Type = stType, /* post-coercion SER */ st_Max = stMax /* max type+1 */ } st_t; /* Redefinition of type qualifiers. */ typedef enum tq { tq_Nil = tqNil, /* bt is what you see */ tq_Ptr = tqPtr, /* pointer */ tq_Proc = tqProc, /* procedure */ tq_Array = tqArray, /* duh */ tq_Far = tqFar, /* longer addressing - 8086/8 land */ tq_Vol = tqVol, /* volatile */ tq_Max = tqMax /* Max type qualifier+1 */ } tq_t; /* Redefinition of basic types. */ typedef enum bt { bt_Nil = btNil, /* undefined */ bt_Adr = btAdr, /* address - integer same size as pointer */ bt_Char = btChar, /* character */ bt_UChar = btUChar, /* unsigned character */ bt_Short = btShort, /* short */ bt_UShort = btUShort, /* unsigned short */ bt_Int = btInt, /* int */ bt_UInt = btUInt, /* unsigned int */ bt_Long = btLong, /* long */ bt_ULong = btULong, /* unsigned long */ bt_Float = btFloat, /* float (real) */ bt_Double = btDouble, /* Double (real) */ bt_Struct = btStruct, /* Structure (Record) */ bt_Union = btUnion, /* Union (variant) */ bt_Enum = btEnum, /* Enumerated */ bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */ bt_Range = btRange, /* subrange of int */ bt_Set = btSet, /* pascal sets */ bt_Complex = btComplex, /* fortran complex */ bt_DComplex = btDComplex, /* fortran double complex */ bt_Indirect = btIndirect, /* forward or unnamed typedef */ bt_FixedDec = btFixedDec, /* Fixed Decimal */ bt_FloatDec = btFloatDec, /* Float Decimal */ bt_String = btString, /* Varying Length Character String */ bt_Bit = btBit, /* Aligned Bit String */ bt_Picture = btPicture, /* Picture */ bt_Void = btVoid, /* Void */ bt_Max = btMax /* Max basic type+1 */ } bt_t; #define N_TQ itqMax /* States for whether to hash type or not. */ typedef enum hash_state { hash_no = 0, /* Don't hash type */ hash_yes = 1, /* OK to hash type, or use previous hash */ hash_record = 2 /* OK to record hash, but don't use prev. */ } hash_state_t; /* Types of different sized allocation requests. */ enum alloc_type { alloc_type_none, /* dummy value */ alloc_type_scope, /* nested scopes linked list */ alloc_type_vlinks, /* glue linking pages in varray */ alloc_type_shash, /* string hash element */ alloc_type_thash, /* type hash element */ alloc_type_tag, /* struct/union/tag element */ alloc_type_forward, /* element to hold unknown tag */ alloc_type_thead, /* head of type hash list */ alloc_type_varray, /* general varray allocation */ alloc_type_lineno, /* line number list */ alloc_type_last /* last+1 element for array bounds */ }; /* Types of auxiliary type information. */ enum aux_type { aux_tir, /* TIR type information */ aux_rndx, /* relative index into symbol table */ aux_dnLow, /* low dimension */ aux_dnHigh, /* high dimension */ aux_isym, /* symbol table index (end of proc) */ aux_iss, /* index into string space (not used) */ aux_width, /* width for non-default sized struc fields */ aux_count /* count of ranges for variant arm */ }; /* Structures to provide n-number of virtual arrays, each of which can grow linearly, and which are written in the object file as sequential pages. On systems with a BSD malloc, the MAX_CLUSTER_PAGES should be 1 less than a power of two, since malloc adds it's overhead, and rounds up to the next power of 2. Pages are linked together via a linked list. If PAGE_SIZE is > 4096, the string length in the shash_t structure can't be represented (assuming there are strings > 4096 bytes). */ /* FIXME: Yes, there can be such strings while emitting C++ class debug info. Templates are the offender here, the test case in question having a mangled class name of t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\ 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey Repeat that a couple dozen times while listing the class members and you've got strings over 4k. Hack around this for now by increasing the page size. A proper solution would abandon this structure scheme certainly for very large strings, and possibly entirely. */ #ifndef PAGE_SIZE #define PAGE_SIZE (8*1024) /* size of varray pages */ #endif #define PAGE_USIZE ((unsigned long) PAGE_SIZE) #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */ #define MAX_CLUSTER_PAGES 63 #endif /* Linked list connecting separate page allocations. */ typedef struct vlinks { struct vlinks *prev; /* previous set of pages */ struct vlinks *next; /* next set of pages */ union page *datum; /* start of page */ unsigned long start_index; /* starting index # of page */ } vlinks_t; /* Virtual array header. */ typedef struct varray { vlinks_t *first; /* first page link */ vlinks_t *last; /* last page link */ unsigned long num_allocated; /* # objects allocated */ unsigned short object_size; /* size in bytes of each object */ unsigned short objects_per_page; /* # objects that can fit on a page */ unsigned short objects_last_page; /* # objects allocated on last page */ } varray_t; #ifndef MALLOC_CHECK #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type)) #else #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE) #endif #define INIT_VARRAY(type) { /* macro to initialize a varray */ \ (vlinks_t *)0, /* first */ \ (vlinks_t *)0, /* last */ \ 0, /* num_allocated */ \ sizeof (type), /* object_size */ \ OBJECTS_PER_PAGE (type), /* objects_per_page */ \ OBJECTS_PER_PAGE (type), /* objects_last_page */ \ } /* Master type for indexes within the symbol table. */ typedef unsigned long symint_t; /* Linked list support for nested scopes (file, block, structure, etc.). */ typedef struct scope { struct scope *prev; /* previous scope level */ struct scope *free; /* free list pointer */ struct localsym *lsym; /* pointer to local symbol node */ st_t type; /* type of the node */ } scope_t; /* For a local symbol we store a gas symbol as well as the debugging information we generate. The gas symbol will be NULL if this is only a debugging symbol. */ typedef struct localsym { const char *name; /* symbol name */ symbolS *as_sym; /* symbol as seen by gas */ bfd_vma addend; /* addend to as_sym value */ struct efdr *file_ptr; /* file pointer */ struct ecoff_proc *proc_ptr; /* proc pointer */ struct localsym *begin_ptr; /* symbol at start of block */ struct ecoff_aux *index_ptr; /* index value to be filled in */ struct forward *forward_ref; /* forward references to this symbol */ long sym_index; /* final symbol index */ EXTR ecoff_sym; /* ECOFF debugging symbol */ } localsym_t; /* For aux information we keep the type and the data. */ typedef struct ecoff_aux { enum aux_type type; /* aux type */ AUXU data; /* aux data */ } aux_t; /* For a procedure we store the gas symbol as well as the PDR debugging information. */ typedef struct ecoff_proc { localsym_t *sym; /* associated symbol */ PDR pdr; /* ECOFF debugging info */ } proc_t; /* Number of proc_t structures allocated. */ static unsigned long proc_cnt; /* Forward reference list for tags referenced, but not yet defined. */ typedef struct forward { struct forward *next; /* next forward reference */ struct forward *free; /* free list pointer */ aux_t *ifd_ptr; /* pointer to store file index */ aux_t *index_ptr; /* pointer to store symbol index */ } forward_t; /* Linked list support for tags. The first tag in the list is always the current tag for that block. */ typedef struct tag { struct tag *free; /* free list pointer */ struct shash *hash_ptr; /* pointer to the hash table head */ struct tag *same_name; /* tag with same name in outer scope */ struct tag *same_block; /* next tag defined in the same block. */ struct forward *forward_ref; /* list of forward references */ bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */ symint_t ifd; /* file # tag defined in */ localsym_t *sym; /* file's local symbols */ } tag_t; /* Head of a block's linked list of tags. */ typedef struct thead { struct thead *prev; /* previous block */ struct thead *free; /* free list pointer */ struct tag *first_tag; /* first tag in block defined */ } thead_t; /* Union containing pointers to each the small structures which are freed up. */ typedef union small_free { scope_t *f_scope; /* scope structure */ thead_t *f_thead; /* tag head structure */ tag_t *f_tag; /* tag element structure */ forward_t *f_forward; /* forward tag reference */ } small_free_t; /* String hash table entry. */ typedef struct shash { char *string; /* string we are hashing */ symint_t indx; /* index within string table */ EXTR *esym_ptr; /* global symbol pointer */ localsym_t *sym_ptr; /* local symbol pointer */ localsym_t *end_ptr; /* symbol pointer to end block */ tag_t *tag_ptr; /* tag pointer */ proc_t *proc_ptr; /* procedure descriptor pointer */ } shash_t; /* Type hash table support. The size of the hash table must fit within a page with the other extended file descriptor information. Because unique types which are hashed are fewer in number than strings, we use a smaller hash value. */ #define HASHBITS 30 #ifndef THASH_SIZE #define THASH_SIZE 113 #endif typedef struct thash { struct thash *next; /* next hash value */ AUXU type; /* type we are hashing */ symint_t indx; /* index within string table */ } thash_t; /* Extended file descriptor that contains all of the support necessary to add things to each file separately. */ typedef struct efdr { FDR fdr; /* File header to be written out */ FDR *orig_fdr; /* original file header */ char *name; /* filename */ int fake; /* whether this is faked .file */ symint_t void_type; /* aux. pointer to 'void' type */ symint_t int_type; /* aux. pointer to 'int' type */ scope_t *cur_scope; /* current nested scopes */ symint_t file_index; /* current file number */ int nested_scopes; /* # nested scopes */ varray_t strings; /* local strings */ varray_t symbols; /* local symbols */ varray_t procs; /* procedures */ varray_t aux_syms; /* auxiliary symbols */ struct efdr *next_file; /* next file descriptor */ /* string/type hash tables */ struct hash_control *str_hash; /* string hash table */ thash_t *thash_head[THASH_SIZE]; } efdr_t; /* Pre-initialized extended file structure. */ static const efdr_t init_file = { { /* FDR structure */ 0, /* adr: memory address of beginning of file */ 0, /* rss: file name (of source, if known) */ 0, /* issBase: file's string space */ 0, /* cbSs: number of bytes in the ss */ 0, /* isymBase: beginning of symbols */ 0, /* csym: count file's of symbols */ 0, /* ilineBase: file's line symbols */ 0, /* cline: count of file's line symbols */ 0, /* ioptBase: file's optimization entries */ 0, /* copt: count of file's optimization entries */ 0, /* ipdFirst: start of procedures for this file */ 0, /* cpd: count of procedures for this file */ 0, /* iauxBase: file's auxiliary entries */ 0, /* caux: count of file's auxiliary entries */ 0, /* rfdBase: index into the file indirect table */ 0, /* crfd: count file indirect entries */ langC, /* lang: language for this file */ 1, /* fMerge: whether this file can be merged */ 0, /* fReadin: true if read in (not just created) */ TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */ GLEVEL_2, /* glevel: level this file was compiled with */ 0, /* reserved: reserved for future use */ 0, /* cbLineOffset: byte offset from header for this file ln's */ 0, /* cbLine: size of lines for this file */ }, (FDR *)0, /* orig_fdr: original file header pointer */ (char *)0, /* name: pointer to filename */ 0, /* fake: whether this is a faked .file */ 0, /* void_type: ptr to aux node for void type */ 0, /* int_type: ptr to aux node for int type */ (scope_t *)0, /* cur_scope: current scope being processed */ 0, /* file_index: current file # */ 0, /* nested_scopes: # nested scopes */ INIT_VARRAY (char), /* strings: local string varray */ INIT_VARRAY (localsym_t), /* symbols: local symbols varray */ INIT_VARRAY (proc_t), /* procs: procedure varray */ INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */ (struct efdr *)0, /* next_file: next file structure */ (struct hash_control *)0, /* str_hash: string hash table */ { 0 }, /* thash_head: type hash table */ }; static efdr_t *first_file; /* first file descriptor */ static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */ /* Line number information is kept in a list until the assembly is finished. */ typedef struct lineno_list { struct lineno_list *next; /* next element in list */ efdr_t *file; /* file this line is in */ proc_t *proc; /* procedure this line is in */ fragS *frag; /* fragment this line number is in */ unsigned long paddr; /* offset within fragment */ long lineno; /* actual line number */ } lineno_list_t; static lineno_list_t *first_lineno; static lineno_list_t *last_lineno; static lineno_list_t **last_lineno_ptr = &first_lineno; /* Sometimes there will be some .loc statements before a .ent. We keep them in this list so that we can fill in the procedure pointer after we see the .ent. */ static lineno_list_t *noproc_lineno; /* Union of various things that are held in pages. */ typedef union page { char byte [ PAGE_SIZE ]; unsigned char ubyte [ PAGE_SIZE ]; efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ]; FDR ofile [ PAGE_SIZE / sizeof (FDR) ]; proc_t proc [ PAGE_SIZE / sizeof (proc_t) ]; localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ]; aux_t aux [ PAGE_SIZE / sizeof (aux_t) ]; DNR dense [ PAGE_SIZE / sizeof (DNR) ]; scope_t scope [ PAGE_SIZE / sizeof (scope_t) ]; vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ]; shash_t shash [ PAGE_SIZE / sizeof (shash_t) ]; thash_t thash [ PAGE_SIZE / sizeof (thash_t) ]; tag_t tag [ PAGE_SIZE / sizeof (tag_t) ]; forward_t forward [ PAGE_SIZE / sizeof (forward_t) ]; thead_t thead [ PAGE_SIZE / sizeof (thead_t) ]; lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ]; } page_type; /* Structure holding allocation information for small sized structures. */ typedef struct alloc_info { char *alloc_name; /* name of this allocation type (must be first) */ page_type *cur_page; /* current page being allocated from */ small_free_t free_list; /* current free list if any */ int unallocated; /* number of elements unallocated on page */ int total_alloc; /* total number of allocations */ int total_free; /* total number of frees */ int total_pages; /* total number of pages allocated */ } alloc_info_t; /* Type information collected together. */ typedef struct type_info { bt_t basic_type; /* basic type */ int orig_type; /* original COFF-based type */ int num_tq; /* # type qualifiers */ int num_dims; /* # dimensions */ int num_sizes; /* # sizes */ int extra_sizes; /* # extra sizes not tied with dims */ tag_t * tag_ptr; /* tag pointer */ int bitfield; /* symbol is a bitfield */ tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/ symint_t dimensions [N_TQ]; /* dimensions for each array */ symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of struct/union/enum + bitfield size */ } type_info_t; /* Pre-initialized type_info struct. */ static const type_info_t type_info_init = { bt_Nil, /* basic type */ T_NULL, /* original COFF-based type */ 0, /* # type qualifiers */ 0, /* # dimensions */ 0, /* # sizes */ 0, /* sizes not tied with dims */ NULL, /* ptr to tag */ 0, /* bitfield */ { /* type qualifiers */ tq_Nil, tq_Nil, tq_Nil, tq_Nil, tq_Nil, tq_Nil, }, { /* dimensions */ 0, 0, 0, 0, 0, 0 }, { /* sizes */ 0, 0, 0, 0, 0, 0, 0, 0, }, }; /* Global hash table for the tags table and global table for file descriptors. */ static varray_t file_desc = INIT_VARRAY (efdr_t); static struct hash_control *tag_hash; /* Static types for int and void. Also, remember the last function's type (which is set up when we encounter the declaration for the function, and used when the end block for the function is emitted. */ static type_info_t int_type_info; static type_info_t void_type_info; static type_info_t last_func_type_info; static symbolS *last_func_sym_value; /* Convert COFF basic type to ECOFF basic type. The T_NULL type really should use bt_Void, but this causes the current ecoff GDB to issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS 2.0) doesn't understand it, even though the compiler generates it. Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler suite, but for now go with what works. It would make sense for the .type and .scl directives to use the ECOFF numbers directly, rather than using the COFF numbers and mapping them. Unfortunately, this is historically what mips-tfile expects, and changing gcc now would be a considerable pain (the native compiler generates debugging information internally, rather than via the assembler, so it will never use .type or .scl). */ static const bt_t map_coff_types[] = { bt_Nil, /* T_NULL */ bt_Nil, /* T_ARG */ bt_Char, /* T_CHAR */ bt_Short, /* T_SHORT */ bt_Int, /* T_INT */ bt_Long, /* T_LONG */ bt_Float, /* T_FLOAT */ bt_Double, /* T_DOUBLE */ bt_Struct, /* T_STRUCT */ bt_Union, /* T_UNION */ bt_Enum, /* T_ENUM */ bt_Enum, /* T_MOE */ bt_UChar, /* T_UCHAR */ bt_UShort, /* T_USHORT */ bt_UInt, /* T_UINT */ bt_ULong /* T_ULONG */ }; /* Convert COFF storage class to ECOFF storage class. */ static const sc_t map_coff_storage[] = { sc_Nil, /* 0: C_NULL */ sc_Abs, /* 1: C_AUTO auto var */ sc_Undefined, /* 2: C_EXT external */ sc_Data, /* 3: C_STAT static */ sc_Register, /* 4: C_REG register */ sc_Undefined, /* 5: C_EXTDEF ??? */ sc_Text, /* 6: C_LABEL label */ sc_Text, /* 7: C_ULABEL user label */ sc_Info, /* 8: C_MOS member of struct */ sc_Abs, /* 9: C_ARG argument */ sc_Info, /* 10: C_STRTAG struct tag */ sc_Info, /* 11: C_MOU member of union */ sc_Info, /* 12: C_UNTAG union tag */ sc_Info, /* 13: C_TPDEF typedef */ sc_Data, /* 14: C_USTATIC ??? */ sc_Info, /* 15: C_ENTAG enum tag */ sc_Info, /* 16: C_MOE member of enum */ sc_Register, /* 17: C_REGPARM register parameter */ sc_Bits, /* 18; C_FIELD bitfield */ sc_Nil, /* 19 */ sc_Nil, /* 20 */ sc_Nil, /* 21 */ sc_Nil, /* 22 */ sc_Nil, /* 23 */ sc_Nil, /* 24 */ sc_Nil, /* 25 */ sc_Nil, /* 26 */ sc_Nil, /* 27 */ sc_Nil, /* 28 */ sc_Nil, /* 29 */ sc_Nil, /* 30 */ sc_Nil, /* 31 */ sc_Nil, /* 32 */ sc_Nil, /* 33 */ sc_Nil, /* 34 */ sc_Nil, /* 35 */ sc_Nil, /* 36 */ sc_Nil, /* 37 */ sc_Nil, /* 38 */ sc_Nil, /* 39 */ sc_Nil, /* 40 */ sc_Nil, /* 41 */ sc_Nil, /* 42 */ sc_Nil, /* 43 */ sc_Nil, /* 44 */ sc_Nil, /* 45 */ sc_Nil, /* 46 */ sc_Nil, /* 47 */ sc_Nil, /* 48 */ sc_Nil, /* 49 */ sc_Nil, /* 50 */ sc_Nil, /* 51 */ sc_Nil, /* 52 */ sc_Nil, /* 53 */ sc_Nil, /* 54 */ sc_Nil, /* 55 */ sc_Nil, /* 56 */ sc_Nil, /* 57 */ sc_Nil, /* 58 */ sc_Nil, /* 59 */ sc_Nil, /* 60 */ sc_Nil, /* 61 */ sc_Nil, /* 62 */ sc_Nil, /* 63 */ sc_Nil, /* 64 */ sc_Nil, /* 65 */ sc_Nil, /* 66 */ sc_Nil, /* 67 */ sc_Nil, /* 68 */ sc_Nil, /* 69 */ sc_Nil, /* 70 */ sc_Nil, /* 71 */ sc_Nil, /* 72 */ sc_Nil, /* 73 */ sc_Nil, /* 74 */ sc_Nil, /* 75 */ sc_Nil, /* 76 */ sc_Nil, /* 77 */ sc_Nil, /* 78 */ sc_Nil, /* 79 */ sc_Nil, /* 80 */ sc_Nil, /* 81 */ sc_Nil, /* 82 */ sc_Nil, /* 83 */ sc_Nil, /* 84 */ sc_Nil, /* 85 */ sc_Nil, /* 86 */ sc_Nil, /* 87 */ sc_Nil, /* 88 */ sc_Nil, /* 89 */ sc_Nil, /* 90 */ sc_Nil, /* 91 */ sc_Nil, /* 92 */ sc_Nil, /* 93 */ sc_Nil, /* 94 */ sc_Nil, /* 95 */ sc_Nil, /* 96 */ sc_Nil, /* 97 */ sc_Nil, /* 98 */ sc_Nil, /* 99 */ sc_Text, /* 100: C_BLOCK block start/end */ sc_Text, /* 101: C_FCN function start/end */ sc_Info, /* 102: C_EOS end of struct/union/enum */ sc_Nil, /* 103: C_FILE file start */ sc_Nil, /* 104: C_LINE line number */ sc_Nil, /* 105: C_ALIAS combined type info */ sc_Nil, /* 106: C_HIDDEN ??? */ }; /* Convert COFF storage class to ECOFF symbol type. */ static const st_t map_coff_sym_type[] = { st_Nil, /* 0: C_NULL */ st_Local, /* 1: C_AUTO auto var */ st_Global, /* 2: C_EXT external */ st_Static, /* 3: C_STAT static */ st_Local, /* 4: C_REG register */ st_Global, /* 5: C_EXTDEF ??? */ st_Label, /* 6: C_LABEL label */ st_Label, /* 7: C_ULABEL user label */ st_Member, /* 8: C_MOS member of struct */ st_Param, /* 9: C_ARG argument */ st_Block, /* 10: C_STRTAG struct tag */ st_Member, /* 11: C_MOU member of union */ st_Block, /* 12: C_UNTAG union tag */ st_Typedef, /* 13: C_TPDEF typedef */ st_Static, /* 14: C_USTATIC ??? */ st_Block, /* 15: C_ENTAG enum tag */ st_Member, /* 16: C_MOE member of enum */ st_Param, /* 17: C_REGPARM register parameter */ st_Member, /* 18; C_FIELD bitfield */ st_Nil, /* 19 */ st_Nil, /* 20 */ st_Nil, /* 21 */ st_Nil, /* 22 */ st_Nil, /* 23 */ st_Nil, /* 24 */ st_Nil, /* 25 */ st_Nil, /* 26 */ st_Nil, /* 27 */ st_Nil, /* 28 */ st_Nil, /* 29 */ st_Nil, /* 30 */ st_Nil, /* 31 */ st_Nil, /* 32 */ st_Nil, /* 33 */ st_Nil, /* 34 */ st_Nil, /* 35 */ st_Nil, /* 36 */ st_Nil, /* 37 */ st_Nil, /* 38 */ st_Nil, /* 39 */ st_Nil, /* 40 */ st_Nil, /* 41 */ st_Nil, /* 42 */ st_Nil, /* 43 */ st_Nil, /* 44 */ st_Nil, /* 45 */ st_Nil, /* 46 */ st_Nil, /* 47 */ st_Nil, /* 48 */ st_Nil, /* 49 */ st_Nil, /* 50 */ st_Nil, /* 51 */ st_Nil, /* 52 */ st_Nil, /* 53 */ st_Nil, /* 54 */ st_Nil, /* 55 */ st_Nil, /* 56 */ st_Nil, /* 57 */ st_Nil, /* 58 */ st_Nil, /* 59 */ st_Nil, /* 60 */ st_Nil, /* 61 */ st_Nil, /* 62 */ st_Nil, /* 63 */ st_Nil, /* 64 */ st_Nil, /* 65 */ st_Nil, /* 66 */ st_Nil, /* 67 */ st_Nil, /* 68 */ st_Nil, /* 69 */ st_Nil, /* 70 */ st_Nil, /* 71 */ st_Nil, /* 72 */ st_Nil, /* 73 */ st_Nil, /* 74 */ st_Nil, /* 75 */ st_Nil, /* 76 */ st_Nil, /* 77 */ st_Nil, /* 78 */ st_Nil, /* 79 */ st_Nil, /* 80 */ st_Nil, /* 81 */ st_Nil, /* 82 */ st_Nil, /* 83 */ st_Nil, /* 84 */ st_Nil, /* 85 */ st_Nil, /* 86 */ st_Nil, /* 87 */ st_Nil, /* 88 */ st_Nil, /* 89 */ st_Nil, /* 90 */ st_Nil, /* 91 */ st_Nil, /* 92 */ st_Nil, /* 93 */ st_Nil, /* 94 */ st_Nil, /* 95 */ st_Nil, /* 96 */ st_Nil, /* 97 */ st_Nil, /* 98 */ st_Nil, /* 99 */ st_Block, /* 100: C_BLOCK block start/end */ st_Proc, /* 101: C_FCN function start/end */ st_End, /* 102: C_EOS end of struct/union/enum */ st_File, /* 103: C_FILE file start */ st_Nil, /* 104: C_LINE line number */ st_Nil, /* 105: C_ALIAS combined type info */ st_Nil, /* 106: C_HIDDEN ??? */ }; /* Keep track of different sized allocation requests. */ static alloc_info_t alloc_counts[(int) alloc_type_last]; /* Record whether we have seen any debugging information. */ int ecoff_debugging_seen = 0; /* Various statics. */ static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */ static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */ static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */ static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */ static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */ #ifdef ECOFF_DEBUG static int debug = 0; /* trace functions */ #endif static int stabs_seen = 0; /* != 0 if stabs have been seen */ static int current_file_idx; static const char *current_stabs_filename; /* Pseudo symbol to use when putting stabs into the symbol table. */ #ifndef STABS_SYMBOL #define STABS_SYMBOL "@stabs" #endif static char stabs_symbol[] = STABS_SYMBOL; /* Prototypes for functions defined in this file. */ static void add_varray_page (varray_t *vp); static symint_t add_string (varray_t *vp, struct hash_control *hash_tbl, const char *str, shash_t **ret_hash); static localsym_t *add_ecoff_symbol (const char *str, st_t type, sc_t storage, symbolS *sym, bfd_vma addend, symint_t value, symint_t indx); static symint_t add_aux_sym_symint (symint_t aux_word); static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index); static symint_t add_aux_sym_tir (type_info_t *t, hash_state_t state, thash_t **hash_tbl); static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type); static void add_unknown_tag (tag_t *ptag); static void add_procedure (char *func); static void add_file (const char *file_name, int indx, int fake); #ifdef ECOFF_DEBUG static char *sc_to_string (sc_t storage_class); static char *st_to_string (st_t symbol_type); #endif static void mark_stabs (int); static char *ecoff_add_bytes (char **buf, char **bufend, char *bufptr, unsigned long need); static unsigned long ecoff_padding_adjust (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset, char **bufptrptr); static unsigned long ecoff_build_lineno (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset, long *linecntptr); static unsigned long ecoff_build_symbols (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset); static unsigned long ecoff_build_procs (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset); static unsigned long ecoff_build_aux (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset); static unsigned long ecoff_build_strings (char **buf, char **bufend, unsigned long offset, varray_t *vp); static unsigned long ecoff_build_ss (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset); static unsigned long ecoff_build_fdr (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset); static void ecoff_setup_ext (void); static page_type *allocate_cluster (unsigned long npages); static page_type *allocate_page (void); static scope_t *allocate_scope (void); static void free_scope (scope_t *ptr); static vlinks_t *allocate_vlinks (void); static shash_t *allocate_shash (void); static thash_t *allocate_thash (void); static tag_t *allocate_tag (void); static void free_tag (tag_t *ptr); static forward_t *allocate_forward (void); static thead_t *allocate_thead (void); static void free_thead (thead_t *ptr); static lineno_list_t *allocate_lineno_list (void); /* This function should be called when the assembler starts up. */ void ecoff_read_begin_hook (void) { tag_hash = hash_new (); top_tag_head = allocate_thead (); top_tag_head->first_tag = (tag_t *) NULL; top_tag_head->free = (thead_t *) NULL; top_tag_head->prev = cur_tag_head; cur_tag_head = top_tag_head; } /* This function should be called when a symbol is created. */ void ecoff_symbol_new_hook (symbolS *symbolP) { OBJ_SYMFIELD_TYPE *obj; /* Make sure that we have a file pointer, but only if we have seen a file. If we haven't seen a file, then this is a probably special symbol created by md_begin which may required special handling at some point. Creating a dummy file with a dummy name is certainly wrong. */ if (cur_file_ptr == (efdr_t *) NULL && seen_at_least_1_file ()) add_file ((const char *) NULL, 0, 1); obj = symbol_get_obj (symbolP); obj->ecoff_file = cur_file_ptr; obj->ecoff_symbol = NULL; obj->ecoff_extern_size = 0; } /* Add a page to a varray object. */ static void add_varray_page (varray_t *vp /* varray to add page to */) { vlinks_t *new_links = allocate_vlinks (); #ifdef MALLOC_CHECK if (vp->object_size > 1) new_links->datum = (page_type *) xcalloc (1, vp->object_size); else #endif new_links->datum = allocate_page (); alloc_counts[(int) alloc_type_varray].total_alloc++; alloc_counts[(int) alloc_type_varray].total_pages++; new_links->start_index = vp->num_allocated; vp->objects_last_page = 0; if (vp->first == (vlinks_t *) NULL) /* first allocation? */ vp->first = vp->last = new_links; else { /* 2nd or greater allocation */ new_links->prev = vp->last; vp->last->next = new_links; vp->last = new_links; } } /* Add a string (and null pad) to one of the string tables. */ static symint_t add_string (varray_t *vp, /* string obstack */ struct hash_control *hash_tbl, /* ptr to hash table */ const char *str, /* string */ shash_t **ret_hash /* return hash pointer */) { register unsigned long len = strlen (str); register shash_t *hash_ptr; if (len >= PAGE_USIZE) as_fatal (_("string too big (%lu bytes)"), len); hash_ptr = (shash_t *) hash_find (hash_tbl, str); if (hash_ptr == (shash_t *) NULL) { register const char *err; if (vp->objects_last_page + len >= PAGE_USIZE) { vp->num_allocated = ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; add_varray_page (vp); } hash_ptr = allocate_shash (); hash_ptr->indx = vp->num_allocated; hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; vp->objects_last_page += len + 1; vp->num_allocated += len + 1; strcpy (hash_ptr->string, str); err = hash_insert (hash_tbl, str, (char *) hash_ptr); if (err) as_fatal (_("inserting \"%s\" into string hash table: %s"), str, err); } if (ret_hash != (shash_t **) NULL) *ret_hash = hash_ptr; return hash_ptr->indx; } /* Add debugging information for a symbol. */ static localsym_t * add_ecoff_symbol (const char *str, /* symbol name */ st_t type, /* symbol type */ sc_t storage, /* storage class */ symbolS *sym_value, /* associated symbol. */ bfd_vma addend, /* addend to sym_value. */ symint_t value, /* value of symbol */ symint_t indx /* index to local/aux. syms */) { localsym_t *psym; register scope_t *pscope; register thead_t *ptag_head; register tag_t *ptag; register tag_t *ptag_next; register varray_t *vp; register int scope_delta = 0; shash_t *hash_ptr = (shash_t *) NULL; if (cur_file_ptr == (efdr_t *) NULL) as_fatal (_("no current file pointer")); vp = &cur_file_ptr->symbols; if (vp->objects_last_page == vp->objects_per_page) add_varray_page (vp); psym = &vp->last->datum->sym[vp->objects_last_page++]; if (str == (const char *) NULL && sym_value != (symbolS *) NULL) psym->name = S_GET_NAME (sym_value); else psym->name = str; psym->as_sym = sym_value; if (sym_value != (symbolS *) NULL) symbol_get_obj (sym_value)->ecoff_symbol = psym; psym->addend = addend; psym->file_ptr = cur_file_ptr; psym->proc_ptr = cur_proc_ptr; psym->begin_ptr = (localsym_t *) NULL; psym->index_ptr = (aux_t *) NULL; psym->forward_ref = (forward_t *) NULL; psym->sym_index = -1; memset (&psym->ecoff_sym, 0, sizeof (EXTR)); psym->ecoff_sym.asym.value = value; psym->ecoff_sym.asym.st = (unsigned) type; psym->ecoff_sym.asym.sc = (unsigned) storage; psym->ecoff_sym.asym.index = indx; /* If there is an associated symbol, we wait until the end of the assembly before deciding where to put the name (it may be just an external symbol). Otherwise, this is just a debugging symbol and the name should go with the current file. */ if (sym_value == (symbolS *) NULL) psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) ? 0 : add_string (&cur_file_ptr->strings, cur_file_ptr->str_hash, str, &hash_ptr)); ++vp->num_allocated; if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) return psym; /* Save the symbol within the hash table if this is a static item, and it has a name. */ if (hash_ptr != (shash_t *) NULL && (type == st_Global || type == st_Static || type == st_Label || type == st_Proc || type == st_StaticProc)) hash_ptr->sym_ptr = psym; /* push or pop a scope if appropriate. */ switch (type) { default: break; case st_File: /* beginning of file */ case st_Proc: /* procedure */ case st_StaticProc: /* static procedure */ case st_Block: /* begin scope */ pscope = allocate_scope (); pscope->prev = cur_file_ptr->cur_scope; pscope->lsym = psym; pscope->type = type; cur_file_ptr->cur_scope = pscope; if (type != st_File) scope_delta = 1; /* For every block type except file, struct, union, or enumeration blocks, push a level on the tag stack. We omit file types, so that tags can span file boundaries. */ if (type != st_File && storage != sc_Info) { ptag_head = allocate_thead (); ptag_head->first_tag = 0; ptag_head->prev = cur_tag_head; cur_tag_head = ptag_head; } break; case st_End: pscope = cur_file_ptr->cur_scope; if (pscope == (scope_t *) NULL) as_fatal (_("too many st_End's")); else { st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; psym->begin_ptr = pscope->lsym; if (begin_type != st_File) scope_delta = -1; /* Except for file, structure, union, or enumeration end blocks remove all tags created within this scope. */ if (begin_type != st_File && storage != sc_Info) { ptag_head = cur_tag_head; cur_tag_head = ptag_head->prev; for (ptag = ptag_head->first_tag; ptag != (tag_t *) NULL; ptag = ptag_next) { if (ptag->forward_ref != (forward_t *) NULL) add_unknown_tag (ptag); ptag_next = ptag->same_block; ptag->hash_ptr->tag_ptr = ptag->same_name; free_tag (ptag); } free_thead (ptag_head); } cur_file_ptr->cur_scope = pscope->prev; /* block begin gets next sym #. This is set when we know the symbol index value. */ /* Functions push two or more aux words as follows: 1st word: index+1 of the end symbol (filled in later). 2nd word: type of the function (plus any aux words needed). Also, tie the external pointer back to the function begin symbol. */ if (begin_type != st_File && begin_type != st_Block) { symint_t ty; varray_t *svp = &cur_file_ptr->aux_syms; pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); pscope->lsym->index_ptr = &svp->last->datum->aux[svp->objects_last_page - 1]; ty = add_aux_sym_tir (&last_func_type_info, hash_no, &cur_file_ptr->thash_head[0]); /* This seems to be unnecessary. I'm not even sure what it is * intended to do. It's from mips-tfile. * if (last_func_sym_value != (symbolS *) NULL) * { * last_func_sym_value->ifd = cur_file_ptr->file_index; * last_func_sym_value->index = ty; * } */ } free_scope (pscope); } } cur_file_ptr->nested_scopes += scope_delta; #ifdef ECOFF_DEBUG if (debug && type != st_File && (debug > 2 || type == st_Block || type == st_End || type == st_Proc || type == st_StaticProc)) { char *sc_str = sc_to_string (storage); char *st_str = st_to_string (type); int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); fprintf (stderr, "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", value, depth, sc_str); if (str_start && str_end_p1 - str_start > 0) fprintf (stderr, " st= %-11s name= %.*s\n", st_str, str_end_p1 - str_start, str_start); else { unsigned long len = strlen (st_str); fprintf (stderr, " st= %.*s\n", len - 1, st_str); } } #endif return psym; } /* Add an auxiliary symbol (passing a symint). This is actually used for integral aux types, not just symints. */ static symint_t add_aux_sym_symint (symint_t aux_word /* auxiliary information word */) { register varray_t *vp; register aux_t *aux_ptr; if (cur_file_ptr == (efdr_t *) NULL) as_fatal (_("no current file pointer")); vp = &cur_file_ptr->aux_syms; if (vp->objects_last_page == vp->objects_per_page) add_varray_page (vp); aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; aux_ptr->type = aux_isym; aux_ptr->data.isym = aux_word; return vp->num_allocated++; } /* Add an auxiliary symbol (passing a file/symbol index combo). */ static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index) { register varray_t *vp; register aux_t *aux_ptr; if (cur_file_ptr == (efdr_t *) NULL) as_fatal (_("no current file pointer")); vp = &cur_file_ptr->aux_syms; if (vp->objects_last_page == vp->objects_per_page) add_varray_page (vp); aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; aux_ptr->type = aux_rndx; aux_ptr->data.rndx.rfd = file_index; aux_ptr->data.rndx.index = sym_index; return vp->num_allocated++; } /* Add an auxiliary symbol (passing the basic type and possibly type qualifiers). */ static symint_t add_aux_sym_tir (type_info_t *t, /* current type information */ hash_state_t state, /* whether to hash type or not */ thash_t **hash_tbl /* pointer to hash table to use */) { register varray_t *vp; register aux_t *aux_ptr; static AUXU init_aux; symint_t ret; int i; AUXU aux; if (cur_file_ptr == (efdr_t *) NULL) as_fatal (_("no current file pointer")); vp = &cur_file_ptr->aux_syms; aux = init_aux; aux.ti.bt = (int) t->basic_type; aux.ti.continued = 0; aux.ti.fBitfield = t->bitfield; aux.ti.tq0 = (int) t->type_qualifiers[0]; aux.ti.tq1 = (int) t->type_qualifiers[1]; aux.ti.tq2 = (int) t->type_qualifiers[2]; aux.ti.tq3 = (int) t->type_qualifiers[3]; aux.ti.tq4 = (int) t->type_qualifiers[4]; aux.ti.tq5 = (int) t->type_qualifiers[5]; /* For anything that adds additional information, we must not hash, so check here, and reset our state. */ if (state != hash_no && (t->type_qualifiers[0] == tq_Array || t->type_qualifiers[1] == tq_Array || t->type_qualifiers[2] == tq_Array || t->type_qualifiers[3] == tq_Array || t->type_qualifiers[4] == tq_Array || t->type_qualifiers[5] == tq_Array || t->basic_type == bt_Struct || t->basic_type == bt_Union || t->basic_type == bt_Enum || t->bitfield || t->num_dims > 0)) state = hash_no; /* See if we can hash this type, and save some space, but some types can't be hashed (because they contain arrays or continuations), and others can be put into the hash list, but cannot use existing types because other aux entries precede this one. */ if (state != hash_no) { register thash_t *hash_ptr; register symint_t hi; hi = aux.isym & ((1 << HASHBITS) - 1); hi %= THASH_SIZE; for (hash_ptr = hash_tbl[hi]; hash_ptr != (thash_t *)0; hash_ptr = hash_ptr->next) { if (aux.isym == hash_ptr->type.isym) break; } if (hash_ptr != (thash_t *) NULL && state == hash_yes) return hash_ptr->indx; if (hash_ptr == (thash_t *) NULL) { hash_ptr = allocate_thash (); hash_ptr->next = hash_tbl[hi]; hash_ptr->type = aux; hash_ptr->indx = vp->num_allocated; hash_tbl[hi] = hash_ptr; } } /* Everything is set up, add the aux symbol. */ if (vp->objects_last_page == vp->objects_per_page) add_varray_page (vp); aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; aux_ptr->type = aux_tir; aux_ptr->data = aux; ret = vp->num_allocated++; /* Add bitfield length if it exists. NOTE: Mips documentation claims bitfield goes at the end of the AUX record, but the DECstation compiler emits it here. (This would only make a difference for enum bitfields.) Also note: We use the last size given since gcc may emit 2 for an enum bitfield. */ if (t->bitfield) (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]); /* Add tag information if needed. Structure, union, and enum references add 2 aux symbols: a [file index, symbol index] pointer to the structure type, and the current file index. */ if (t->basic_type == bt_Struct || t->basic_type == bt_Union || t->basic_type == bt_Enum) { register symint_t file_index = t->tag_ptr->ifd; register localsym_t *sym = t->tag_ptr->sym; register forward_t *forward_ref = allocate_forward (); if (sym != (localsym_t *) NULL) { forward_ref->next = sym->forward_ref; sym->forward_ref = forward_ref; } else { forward_ref->next = t->tag_ptr->forward_ref; t->tag_ptr->forward_ref = forward_ref; } (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); forward_ref->index_ptr = &vp->last->datum->aux[vp->objects_last_page - 1]; (void) add_aux_sym_symint (file_index); forward_ref->ifd_ptr = &vp->last->datum->aux[vp->objects_last_page - 1]; } /* Add information about array bounds if they exist. */ for (i = 0; i < t->num_dims; i++) { (void) add_aux_sym_rndx (ST_RFDESCAPE, cur_file_ptr->int_type); (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ ? 0 : (t->sizes[i] * 8) / t->dimensions[i]); }; /* NOTE: Mips documentation claims that the bitfield width goes here. But it needs to be emitted earlier. */ return ret; } /* Add a tag to the tag table (unless it already exists). */ static tag_t * get_tag (const char *tag, /* tag name */ localsym_t *sym, /* tag start block */ bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */) { shash_t *hash_ptr; const char *err; tag_t *tag_ptr; if (cur_file_ptr == (efdr_t *) NULL) as_fatal (_("no current file pointer")); hash_ptr = (shash_t *) hash_find (tag_hash, tag); if (hash_ptr != (shash_t *) NULL && hash_ptr->tag_ptr != (tag_t *) NULL) { tag_ptr = hash_ptr->tag_ptr; if (sym != (localsym_t *) NULL) { tag_ptr->basic_type = basic_type; tag_ptr->ifd = cur_file_ptr->file_index; tag_ptr->sym = sym; } return tag_ptr; } if (hash_ptr == (shash_t *) NULL) { char *perm; perm = xstrdup (tag); hash_ptr = allocate_shash (); err = hash_insert (tag_hash, perm, (char *) hash_ptr); if (err) as_fatal (_("inserting \"%s\" into tag hash table: %s"), tag, err); hash_ptr->string = perm; } tag_ptr = allocate_tag (); tag_ptr->forward_ref = (forward_t *) NULL; tag_ptr->hash_ptr = hash_ptr; tag_ptr->same_name = hash_ptr->tag_ptr; tag_ptr->basic_type = basic_type; tag_ptr->sym = sym; tag_ptr->ifd = ((sym == (localsym_t *) NULL) ? (symint_t) -1 : cur_file_ptr->file_index); tag_ptr->same_block = cur_tag_head->first_tag; cur_tag_head->first_tag = tag_ptr; hash_ptr->tag_ptr = tag_ptr; return tag_ptr; } /* Add an unknown {struct, union, enum} tag. */ static void add_unknown_tag (tag_t *ptag /* pointer to tag information */) { shash_t *hash_ptr = ptag->hash_ptr; char *name = hash_ptr->string; localsym_t *sym; forward_t **pf; #ifdef ECOFF_DEBUG if (debug > 1) { char *agg_type = "{unknown aggregate type}"; switch (ptag->basic_type) { case bt_Struct: agg_type = "struct"; break; case bt_Union: agg_type = "union"; break; case bt_Enum: agg_type = "enum"; break; default: break; } fprintf (stderr, "unknown %s %.*s found\n", agg_type, hash_ptr->len, name_start); } #endif sym = add_ecoff_symbol (name, st_Block, sc_Info, (symbolS *) NULL, (bfd_vma) 0, (symint_t) 0, (symint_t) 0); (void) add_ecoff_symbol (name, st_End, sc_Info, (symbolS *) NULL, (bfd_vma) 0, (symint_t) 0, (symint_t) 0); for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) ; *pf = ptag->forward_ref; } /* Add a procedure to the current file's list of procedures, and record this is the current procedure. */ static void add_procedure (char *func /* func name */) { register varray_t *vp; register proc_t *new_proc_ptr; symbolS *sym; #ifdef ECOFF_DEBUG if (debug) fputc ('\n', stderr); #endif if (cur_file_ptr == (efdr_t *) NULL) as_fatal (_("no current file pointer")); vp = &cur_file_ptr->procs; if (vp->objects_last_page == vp->objects_per_page) add_varray_page (vp); cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++]; if (first_proc_ptr == (proc_t *) NULL) first_proc_ptr = new_proc_ptr; vp->num_allocated++; new_proc_ptr->pdr.isym = -1; new_proc_ptr->pdr.iline = -1; new_proc_ptr->pdr.lnLow = -1; new_proc_ptr->pdr.lnHigh = -1; /* Set the BSF_FUNCTION flag for the symbol. */ sym = symbol_find_or_make (func); symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; /* Push the start of the function. */ new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, sym, (bfd_vma) 0, (symint_t) 0, (symint_t) 0); ++proc_cnt; /* Fill in the linenos preceding the .ent, if any. */ if (noproc_lineno != (lineno_list_t *) NULL) { lineno_list_t *l; for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) l->proc = new_proc_ptr; *last_lineno_ptr = noproc_lineno; while (*last_lineno_ptr != NULL) { last_lineno = *last_lineno_ptr; last_lineno_ptr = &last_lineno->next; } noproc_lineno = (lineno_list_t *) NULL; } } symbolS * ecoff_get_cur_proc_sym (void) { return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); } /* Add a new filename, and set up all of the file relative virtual arrays (strings, symbols, aux syms, etc.). Record where the current file structure lives. */ static void add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake) { register int first_ch; register efdr_t *fil_ptr; #ifdef ECOFF_DEBUG if (debug) fprintf (stderr, "\tfile\t%.*s\n", len, file_start); #endif /* If the file name is NULL, then no .file symbol appeared, and we want to use the actual file name. */ if (file_name == (const char *) NULL) { char *file; if (first_file != (efdr_t *) NULL) as_fatal (_("fake .file after real one")); as_where (&file, (unsigned int *) NULL); file_name = (const char *) file; /* Automatically generate ECOFF debugging information, since I think that's what other ECOFF assemblers do. We don't do this if we see a .file directive with a string, since that implies that some sort of debugging information is being provided. */ if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED) debug_type = DEBUG_ECOFF; } else if (debug_type == DEBUG_UNSPECIFIED) debug_type = DEBUG_NONE; #ifndef NO_LISTING if (listing) listing_source_file (file_name); #endif current_stabs_filename = file_name; /* If we're creating stabs, then we don't actually make a new FDR. Instead, we just create a stabs symbol. */ if (stabs_seen) { (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, symbol_new ("L0\001", now_seg, (valueT) frag_now_fix (), frag_now), (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); return; } first_ch = *file_name; /* FIXME: We can't safely merge files which have line number information (fMerge will be zero in this case). Otherwise, we get incorrect line number debugging info. See for instance ecoff_build_lineno, which will end up setting all file->fdr.* fields multiple times, resulting in incorrect debug info. In order to make this work right, all line number and symbol info for the same source file has to be adjacent in the object file, so that a single file descriptor can be used to point to them. This would require maintaining file specific lists of line numbers and symbols for each file, so that they can be merged together (or output together) when two .file pseudo-ops are merged into one file descriptor. */ /* See if the file has already been created. */ for (fil_ptr = first_file; fil_ptr != (efdr_t *) NULL; fil_ptr = fil_ptr->next_file) { if (first_ch == fil_ptr->name[0] && strcmp (file_name, fil_ptr->name) == 0 && fil_ptr->fdr.fMerge) { cur_file_ptr = fil_ptr; if (! fake) cur_file_ptr->fake = 0; break; } } /* If this is a new file, create it. */ if (fil_ptr == (efdr_t *) NULL) { if (file_desc.objects_last_page == file_desc.objects_per_page) add_varray_page (&file_desc); fil_ptr = cur_file_ptr = &file_desc.last->datum->file[file_desc.objects_last_page++]; *fil_ptr = init_file; fil_ptr->file_index = current_file_idx++; ++file_desc.num_allocated; fil_ptr->fake = fake; /* Allocate the string hash table. */ fil_ptr->str_hash = hash_new (); /* Make sure 0 byte in string table is null */ add_string (&fil_ptr->strings, fil_ptr->str_hash, "", (shash_t **)0); if (strlen (file_name) > PAGE_USIZE - 2) as_fatal (_("filename goes over one page boundary")); /* Push the start of the filename. We assume that the filename will be stored at string offset 1. */ (void) add_ecoff_symbol (file_name, st_File, sc_Text, (symbolS *) NULL, (bfd_vma) 0, (symint_t) 0, (symint_t) 0); fil_ptr->fdr.rss = 1; fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; /* Update the linked list of file descriptors. */ *last_file_ptr = fil_ptr; last_file_ptr = &fil_ptr->next_file; /* Add void & int types to the file (void should be first to catch errant 0's within the index fields). */ fil_ptr->void_type = add_aux_sym_tir (&void_type_info, hash_yes, &cur_file_ptr->thash_head[0]); fil_ptr->int_type = add_aux_sym_tir (&int_type_info, hash_yes, &cur_file_ptr->thash_head[0]); } } /* This function is called when the assembler notices a preprocessor directive switching to a new file. This will not happen in compiler output, only in hand coded assembler. */ void ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED) { if (cur_file_ptr != NULL && strcmp (cur_file_ptr->name, name) == 0) return; add_file (name, 0, 0); /* This is a hand coded assembler file, so automatically turn on debugging information. */ if (debug_type == DEBUG_UNSPECIFIED) debug_type = DEBUG_ECOFF; } #ifdef ECOFF_DEBUG /* Convert storage class to string. */ static char * sc_to_string (storage_class) sc_t storage_class; { switch (storage_class) { case sc_Nil: return "Nil,"; case sc_Text: return "Text,"; case sc_Data: return "Data,"; case sc_Bss: return "Bss,"; case sc_Register: return "Register,"; case sc_Abs: return "Abs,"; case sc_Undefined: return "Undefined,"; case sc_CdbLocal: return "CdbLocal,"; case sc_Bits: return "Bits,"; case sc_CdbSystem: return "CdbSystem,"; case sc_RegImage: return "RegImage,"; case sc_Info: return "Info,"; case sc_UserStruct: return "UserStruct,"; case sc_SData: return "SData,"; case sc_SBss: return "SBss,"; case sc_RData: return "RData,"; case sc_Var: return "Var,"; case sc_Common: return "Common,"; case sc_SCommon: return "SCommon,"; case sc_VarRegister: return "VarRegister,"; case sc_Variant: return "Variant,"; case sc_SUndefined: return "SUndefined,"; case sc_Init: return "Init,"; case sc_Max: return "Max,"; } return "???,"; } #endif /* DEBUG */ #ifdef ECOFF_DEBUG /* Convert symbol type to string. */ static char * st_to_string (symbol_type) st_t symbol_type; { switch (symbol_type) { case st_Nil: return "Nil,"; case st_Global: return "Global,"; case st_Static: return "Static,"; case st_Param: return "Param,"; case st_Local: return "Local,"; case st_Label: return "Label,"; case st_Proc: return "Proc,"; case st_Block: return "Block,"; case st_End: return "End,"; case st_Member: return "Member,"; case st_Typedef: return "Typedef,"; case st_File: return "File,"; case st_RegReloc: return "RegReloc,"; case st_Forward: return "Forward,"; case st_StaticProc: return "StaticProc,"; case st_Constant: return "Constant,"; case st_Str: return "String,"; case st_Number: return "Number,"; case st_Expr: return "Expr,"; case st_Type: return "Type,"; case st_Max: return "Max,"; } return "???,"; } #endif /* DEBUG */ /* Parse .begin directives which have a label as the first argument which gives the location of the start of the block. */ void ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED) { char *name; char name_end; if (cur_file_ptr == (efdr_t *) NULL) { as_warn (_(".begin directive without a preceding .file directive")); demand_empty_rest_of_line (); return; } if (cur_proc_ptr == (proc_t *) NULL) { as_warn (_(".begin directive without a preceding .ent directive")); demand_empty_rest_of_line (); return; } name = input_line_pointer; name_end = get_symbol_end (); (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text, symbol_find_or_make (name), (bfd_vma) 0, (symint_t) 0, (symint_t) 0); *input_line_pointer = name_end; /* The line number follows, but we don't use it. */ (void) get_absolute_expression (); demand_empty_rest_of_line (); } /* Parse .bend directives which have a label as the first argument which gives the location of the end of the block. */ void ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED) { char *name; char name_end; symbolS *endsym; if (cur_file_ptr == (efdr_t *) NULL) { as_warn (_(".bend directive without a preceding .file directive")); demand_empty_rest_of_line (); return; } if (cur_proc_ptr == (proc_t *) NULL) { as_warn (_(".bend directive without a preceding .ent directive")); demand_empty_rest_of_line (); return; } name = input_line_pointer; name_end = get_symbol_end (); /* The value is the distance between the .bend directive and the corresponding symbol. We fill in the offset when we write out the symbol. */ endsym = symbol_find (name); if (endsym == (symbolS *) NULL) as_warn (_(".bend directive names unknown symbol")); else (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, (bfd_vma) 0, (symint_t) 0, (symint_t) 0); *input_line_pointer = name_end; /* The line number follows, but we don't use it. */ (void) get_absolute_expression (); demand_empty_rest_of_line (); } /* COFF debugging information is provided as a series of directives (.def, .scl, etc.). We build up information as we read the directives in the following static variables, and file it away when we reach the .endef directive. */ static char *coff_sym_name; static type_info_t coff_type; static sc_t coff_storage_class; static st_t coff_symbol_typ; static int coff_is_function; static char *coff_tag; static valueT coff_value; static symbolS *coff_sym_value; static bfd_vma coff_sym_addend; static int coff_inside_enumeration; /* Handle a .def directive: start defining a symbol. */ void ecoff_directive_def (int ignore ATTRIBUTE_UNUSED) { char *name; char name_end; ecoff_debugging_seen = 1; SKIP_WHITESPACE (); name = input_line_pointer; name_end = get_symbol_end (); if (coff_sym_name != (char *) NULL) as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); else if (*name == '\0') as_warn (_("empty symbol name in .def; ignored")); else { if (coff_sym_name != (char *) NULL) free (coff_sym_name); if (coff_tag != (char *) NULL) free (coff_tag); coff_sym_name = xstrdup (name); coff_type = type_info_init; coff_storage_class = sc_Nil; coff_symbol_typ = st_Nil; coff_is_function = 0; coff_tag = (char *) NULL; coff_value = 0; coff_sym_value = (symbolS *) NULL; coff_sym_addend = 0; } *input_line_pointer = name_end; demand_empty_rest_of_line (); } /* Handle a .dim directive, used to give dimensions for an array. The arguments are comma separated numbers. mips-tfile assumes that there will not be more than 6 dimensions, and gdb won't read any more than that anyhow, so I will also make that assumption. */ void ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED) { int dimens[N_TQ]; int i; if (coff_sym_name == (char *) NULL) { as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); demand_empty_rest_of_line (); return; } for (i = 0; i < N_TQ; i++) { SKIP_WHITESPACE (); dimens[i] = get_absolute_expression (); if (*input_line_pointer == ',') ++input_line_pointer; else { if (*input_line_pointer != '\n' && *input_line_pointer != ';') as_warn (_("badly formed .dim directive")); break; } } if (i == N_TQ) --i; /* The dimensions are stored away in reverse order. */ for (; i >= 0; i--) { if (coff_type.num_dims >= N_TQ) { as_warn (_("too many .dim entries")); break; } coff_type.dimensions[coff_type.num_dims] = dimens[i]; ++coff_type.num_dims; } demand_empty_rest_of_line (); } /* Handle a .scl directive, which sets the COFF storage class of the symbol. */ void ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED) { long val; if (coff_sym_name == (char *) NULL) { as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); demand_empty_rest_of_line (); return; } val = get_absolute_expression (); coff_symbol_typ = map_coff_sym_type[val]; coff_storage_class = map_coff_storage[val]; demand_empty_rest_of_line (); } /* Handle a .size directive. For some reason mips-tfile.c thinks that .size can have multiple arguments. We humor it, although gcc will never generate more than one argument. */ void ecoff_directive_size (int ignore ATTRIBUTE_UNUSED) { int sizes[N_TQ]; int i; if (coff_sym_name == (char *) NULL) { as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); demand_empty_rest_of_line (); return; } for (i = 0; i < N_TQ; i++) { SKIP_WHITESPACE (); sizes[i] = get_absolute_expression (); if (*input_line_pointer == ',') ++input_line_pointer; else { if (*input_line_pointer != '\n' && *input_line_pointer != ';') as_warn (_("badly formed .size directive")); break; } } if (i == N_TQ) --i; /* The sizes are stored away in reverse order. */ for (; i >= 0; i--) { if (coff_type.num_sizes >= N_TQ) { as_warn (_("too many .size entries")); break; } coff_type.sizes[coff_type.num_sizes] = sizes[i]; ++coff_type.num_sizes; } demand_empty_rest_of_line (); } /* Handle the .type directive, which gives the COFF type of the symbol. */ void ecoff_directive_type (int ignore ATTRIBUTE_UNUSED) { long val; tq_t *tq_ptr; tq_t *tq_shft; if (coff_sym_name == (char *) NULL) { as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); demand_empty_rest_of_line (); return; } val = get_absolute_expression (); coff_type.orig_type = BTYPE (val); coff_type.basic_type = map_coff_types[coff_type.orig_type]; tq_ptr = &coff_type.type_qualifiers[N_TQ]; while (val & ~N_BTMASK) { if (tq_ptr == &coff_type.type_qualifiers[0]) { /* FIXME: We could handle this by setting the continued bit. There would still be a limit: the .type argument can not be infinite. */ as_warn (_("the type of %s is too complex; it will be simplified"), coff_sym_name); break; } if (ISPTR (val)) *--tq_ptr = tq_Ptr; else if (ISFCN (val)) *--tq_ptr = tq_Proc; else if (ISARY (val)) *--tq_ptr = tq_Array; else as_fatal (_("Unrecognized .type argument")); val = DECREF (val); } tq_shft = &coff_type.type_qualifiers[0]; while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) *tq_shft++ = *tq_ptr++; if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) { /* If this is a function, ignore it, so that we don't get two entries (one from the .ent, and one for the .def that precedes it). Save the type information so that the end block can properly add it after the begin block index. For MIPS knows what reason, we must strip off the function type at this point. */ coff_is_function = 1; tq_shft[-1] = tq_Nil; } while (tq_shft != &coff_type.type_qualifiers[N_TQ]) *tq_shft++ = tq_Nil; demand_empty_rest_of_line (); } /* Handle the .tag directive, which gives the name of a structure, union or enum. */ void ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED) { char *name; char name_end; if (coff_sym_name == (char *) NULL) { as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); demand_empty_rest_of_line (); return; } name = input_line_pointer; name_end = get_symbol_end (); coff_tag = xstrdup (name); *input_line_pointer = name_end; demand_empty_rest_of_line (); } /* Handle the .val directive, which gives the value of the symbol. It may be the name of a static or global symbol. */ void ecoff_directive_val (int ignore ATTRIBUTE_UNUSED) { expressionS exp; if (coff_sym_name == (char *) NULL) { as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); demand_empty_rest_of_line (); return; } expression (&exp); if (exp.X_op != O_constant && exp.X_op != O_symbol) { as_bad (_(".val expression is too complex")); demand_empty_rest_of_line (); return; } if (exp.X_op == O_constant) coff_value = exp.X_add_number; else { coff_sym_value = exp.X_add_symbol; coff_sym_addend = exp.X_add_number; } demand_empty_rest_of_line (); } /* Handle the .endef directive, which terminates processing of COFF debugging information for a symbol. */ void ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED) { char *name; symint_t indx; localsym_t *sym; demand_empty_rest_of_line (); if (coff_sym_name == (char *) NULL) { as_warn (_(".endef pseudo-op used before .def; ignored")); return; } name = coff_sym_name; coff_sym_name = (char *) NULL; /* If the symbol is a static or external, we have already gotten the appropriate type and class, so make sure we don't override those values. This is needed because there are some type and classes that are not in COFF, such as short data, etc. */ if (coff_sym_value != (symbolS *) NULL) { coff_symbol_typ = st_Nil; coff_storage_class = sc_Nil; } coff_type.extra_sizes = coff_tag != (char *) NULL; if (coff_type.num_dims > 0) { int diff = coff_type.num_dims - coff_type.num_sizes; int i = coff_type.num_dims - 1; int j; if (coff_type.num_sizes != 1 || diff < 0) { as_warn (_("bad COFF debugging information")); return; } /* If this is an array, make sure the same number of dimensions and sizes were passed, creating extra sizes for multiply dimensioned arrays if not passed. */ coff_type.extra_sizes = 0; if (diff) { j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; while (j >= 0) { coff_type.sizes[j] = (((j - diff) >= 0) ? coff_type.sizes[j - diff] : 0); j--; } coff_type.num_sizes = i + 1; for (i--; i >= 0; i--) coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 ? 0 : (coff_type.sizes[i + 1] / coff_type.dimensions[i + 1])); } } else if (coff_symbol_typ == st_Member && coff_type.num_sizes - coff_type.extra_sizes == 1) { /* Is this a bitfield? This is indicated by a structure member having a size field that isn't an array. */ coff_type.bitfield = 1; } /* Except for enumeration members & begin/ending of scopes, put the type word in the aux. symbol table. */ if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) indx = 0; else if (coff_inside_enumeration) indx = cur_file_ptr->void_type; else { if (coff_type.basic_type == bt_Struct || coff_type.basic_type == bt_Union || coff_type.basic_type == bt_Enum) { if (coff_tag == (char *) NULL) { as_warn (_("no tag specified for %s"), name); return; } coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, coff_type.basic_type); } if (coff_is_function) { last_func_type_info = coff_type; last_func_sym_value = coff_sym_value; return; } indx = add_aux_sym_tir (&coff_type, hash_yes, &cur_file_ptr->thash_head[0]); } /* Do any last minute adjustments that are necessary. */ switch (coff_symbol_typ) { default: break; /* For the beginning of structs, unions, and enumerations, the size info needs to be passed in the value field. */ case st_Block: if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes != 1) { as_warn (_("bad COFF debugging information")); return; } else coff_value = coff_type.sizes[0]; coff_inside_enumeration = (coff_type.orig_type == T_ENUM); break; /* For the end of structs, unions, and enumerations, omit the name which is always ".eos". This needs to be done last, so that any error reporting above gives the correct name. */ case st_End: free (name); name = (char *) NULL; coff_value = 0; coff_inside_enumeration = 0; break; /* Members of structures and unions that aren't bitfields, need to adjust the value from a byte offset to a bit offset. Members of enumerations do not have the value adjusted, and can be distinguished by indx == indexNil. For enumerations, update the maximum enumeration value. */ case st_Member: if (! coff_type.bitfield && ! coff_inside_enumeration) coff_value *= 8; break; } /* Add the symbol. */ sym = add_ecoff_symbol (name, coff_symbol_typ, coff_storage_class, coff_sym_value, coff_sym_addend, (symint_t) coff_value, indx); /* deal with struct, union, and enum tags. */ if (coff_symbol_typ == st_Block) { /* Create or update the tag information. */ tag_t *tag_ptr = get_tag (name, sym, coff_type.basic_type); forward_t **pf; /* Remember any forward references. */ for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) ; *pf = tag_ptr->forward_ref; tag_ptr->forward_ref = (forward_t *) NULL; } } /* Parse .end directives. */ void ecoff_directive_end (int ignore ATTRIBUTE_UNUSED) { char *name; char name_end; symbolS *ent; if (cur_file_ptr == (efdr_t *) NULL) { as_warn (_(".end directive without a preceding .file directive")); demand_empty_rest_of_line (); return; } if (cur_proc_ptr == (proc_t *) NULL) { as_warn (_(".end directive without a preceding .ent directive")); demand_empty_rest_of_line (); return; } name = input_line_pointer; name_end = get_symbol_end (); if (name == input_line_pointer) { as_warn (_(".end directive has no name")); *input_line_pointer = name_end; demand_empty_rest_of_line (); return; } /* The value is the distance between the .end directive and the corresponding symbol. We create a fake symbol to hold the current location, and put in the offset when we write out the symbol. */ ent = symbol_find (name); if (ent == (symbolS *) NULL) as_warn (_(".end directive names unknown symbol")); else (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, symbol_new ("L0\001", now_seg, (valueT) frag_now_fix (), frag_now), (bfd_vma) 0, (symint_t) 0, (symint_t) 0); cur_proc_ptr = (proc_t *) NULL; *input_line_pointer = name_end; demand_empty_rest_of_line (); } /* Parse .ent directives. */ void ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED) { char *name; char name_end; if (cur_file_ptr == (efdr_t *) NULL) add_file ((const char *) NULL, 0, 1); if (cur_proc_ptr != (proc_t *) NULL) { as_warn (_("second .ent directive found before .end directive")); demand_empty_rest_of_line (); return; } name = input_line_pointer; name_end = get_symbol_end (); if (name == input_line_pointer) { as_warn (_(".ent directive has no name")); *input_line_pointer = name_end; demand_empty_rest_of_line (); return; } add_procedure (name); *input_line_pointer = name_end; /* The .ent directive is sometimes followed by a number. I'm not really sure what the number means. I don't see any way to store the information in the PDR. The Irix 4 assembler seems to ignore the information. */ SKIP_WHITESPACE (); if (*input_line_pointer == ',') { ++input_line_pointer; SKIP_WHITESPACE (); } if (ISDIGIT (*input_line_pointer) || *input_line_pointer == '-') (void) get_absolute_expression (); demand_empty_rest_of_line (); } /* Parse .extern directives. */ void ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED) { char *name; int c; symbolS *symbolp; valueT size; name = input_line_pointer; c = get_symbol_end (); symbolp = symbol_find_or_make (name); *input_line_pointer = c; S_SET_EXTERNAL (symbolp); if (*input_line_pointer == ',') ++input_line_pointer; size = get_absolute_expression (); symbol_get_obj (symbolp)->ecoff_extern_size = size; } /* Parse .file directives. */ void ecoff_directive_file (int ignore ATTRIBUTE_UNUSED) { int indx; char *name; int len; if (cur_proc_ptr != (proc_t *) NULL) { as_warn (_("no way to handle .file within .ent/.end section")); demand_empty_rest_of_line (); return; } indx = (int) get_absolute_expression (); /* FIXME: we don't have to save the name here. */ name = demand_copy_C_string (&len); add_file (name, indx - 1, 0); demand_empty_rest_of_line (); } /* Parse .fmask directives. */ void ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED) { long val; if (cur_proc_ptr == (proc_t *) NULL) { as_warn (_(".fmask outside of .ent")); demand_empty_rest_of_line (); return; } if (get_absolute_expression_and_terminator (&val) != ',') { as_warn (_("bad .fmask directive")); --input_line_pointer; demand_empty_rest_of_line (); return; } cur_proc_ptr->pdr.fregmask = val; cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); demand_empty_rest_of_line (); } /* Parse .frame directives. */ void ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED) { long val; if (cur_proc_ptr == (proc_t *) NULL) { as_warn (_(".frame outside of .ent")); demand_empty_rest_of_line (); return; } cur_proc_ptr->pdr.framereg = tc_get_register (1); SKIP_WHITESPACE (); if (*input_line_pointer++ != ',' || get_absolute_expression_and_terminator (&val) != ',') { as_warn (_("bad .frame directive")); --input_line_pointer; demand_empty_rest_of_line (); return; } cur_proc_ptr->pdr.frameoffset = val; cur_proc_ptr->pdr.pcreg = tc_get_register (0); /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to Sandro. I don't yet know where this value should be stored, if anywhere. Don't call demand_empty_rest_of_line (). */ s_ignore (42); } /* Parse .mask directives. */ void ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED) { long val; if (cur_proc_ptr == (proc_t *) NULL) { as_warn (_(".mask outside of .ent")); demand_empty_rest_of_line (); return; } if (get_absolute_expression_and_terminator (&val) != ',') { as_warn (_("bad .mask directive")); --input_line_pointer; demand_empty_rest_of_line (); return; } cur_proc_ptr->pdr.regmask = val; cur_proc_ptr->pdr.regoffset = get_absolute_expression (); demand_empty_rest_of_line (); } /* Parse .loc directives. */ void ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED) { lineno_list_t *list; symint_t lineno; if (cur_file_ptr == (efdr_t *) NULL) { as_warn (_(".loc before .file")); demand_empty_rest_of_line (); return; } if (now_seg != text_section) { as_warn (_(".loc outside of .text")); demand_empty_rest_of_line (); return; } /* Skip the file number. */ SKIP_WHITESPACE (); get_absolute_expression (); SKIP_WHITESPACE (); lineno = get_absolute_expression (); #ifndef NO_LISTING if (listing) listing_source_line (lineno); #endif /* If we're building stabs, then output a special label rather than ECOFF line number info. */ if (stabs_seen) { (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, symbol_new ("L0\001", now_seg, (valueT) frag_now_fix (), frag_now), (bfd_vma) 0, 0, lineno); return; } list = allocate_lineno_list (); list->next = (lineno_list_t *) NULL; list->file = cur_file_ptr; list->proc = cur_proc_ptr; list->frag = frag_now; list->paddr = frag_now_fix (); list->lineno = lineno; /* We don't want to merge files which have line numbers. */ cur_file_ptr->fdr.fMerge = 0; /* A .loc directive will sometimes appear before a .ent directive, which means that cur_proc_ptr will be NULL here. Arrange to patch this up. */ if (cur_proc_ptr == (proc_t *) NULL) { lineno_list_t **pl; pl = &noproc_lineno; while (*pl != (lineno_list_t *) NULL) pl = &(*pl)->next; *pl = list; } else { last_lineno = list; *last_lineno_ptr = list; last_lineno_ptr = &list->next; } } /* The MIPS assembler sometimes inserts nop instructions in the instruction stream. When this happens, we must patch up the .loc information so that it points to the instruction after the nop. */ void ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset) { if (last_lineno != NULL && last_lineno->frag == old_frag && last_lineno->paddr == old_frag_offset) { last_lineno->frag = frag_now; last_lineno->paddr = frag_now_fix (); } } /* Make sure the @stabs symbol is emitted. */ static void mark_stabs (int ignore ATTRIBUTE_UNUSED) { if (! stabs_seen) { /* Add a dummy @stabs dymbol. */ stabs_seen = 1; (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo, (symbolS *) NULL, (bfd_vma) 0, (symint_t) -1, ECOFF_MARK_STAB (0)); } } /* Parse .weakext directives. */ #ifndef TC_MIPS /* For TC_MIPS use the version in tc-mips.c. */ void ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED) { char *name; int c; symbolS *symbolP; expressionS exp; name = input_line_pointer; c = get_symbol_end (); symbolP = symbol_find_or_make (name); *input_line_pointer = c; SKIP_WHITESPACE (); if (*input_line_pointer == ',') { if (S_IS_DEFINED (symbolP)) { as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP)); ignore_rest_of_line (); return; } ++input_line_pointer; SKIP_WHITESPACE (); if (! is_end_of_line[(unsigned char) *input_line_pointer]) { expression (&exp); if (exp.X_op != O_symbol) { as_bad (_("bad .weakext directive")); ignore_rest_of_line (); return; } symbol_set_value_expression (symbolP, &exp); } } S_SET_WEAK (symbolP); demand_empty_rest_of_line (); } #endif /* not TC_MIPS */ /* Handle .stabs directives. The actual parsing routine is done by a generic routine. This routine is called via OBJ_PROCESS_STAB. When this is called, input_line_pointer will be pointing at the value field of the stab. .stabs directives have five fields: "string" a string, encoding the type information. code a numeric code, defined in <stab.h> 0 a zero desc a zero or line number value a numeric value or an address. If the value is relocatable, we transform this into: iss points as an index into string space value value from lookup of the name st st from lookup of the name sc sc from lookup of the name index code|CODE_MASK If the value is not relocatable, we transform this into: iss points as an index into string space value value st st_Nil sc sc_Nil index code|CODE_MASK .stabn directives have four fields (string is null): code a numeric code, defined in <stab.h> 0 a zero desc a zero or a line number value a numeric value or an address. */ void ecoff_stab (segT sec ATTRIBUTE_UNUSED, int what, const char *string, int type, int other, int desc) { efdr_t *save_file_ptr = cur_file_ptr; symbolS *sym; symint_t value; bfd_vma addend; st_t st; sc_t sc; symint_t indx; localsym_t *hold = NULL; ecoff_debugging_seen = 1; /* We don't handle .stabd. */ if (what != 's' && what != 'n') { as_bad (_(".stab%c is not supported"), what); return; } /* A .stabn uses a null name, not an empty string. */ if (what == 'n') string = NULL; /* We ignore the other field. */ if (other != 0) as_warn (_(".stab%c: ignoring non-zero other field"), what); /* Make sure we have a current file. */ if (cur_file_ptr == (efdr_t *) NULL) { add_file ((const char *) NULL, 0, 1); save_file_ptr = cur_file_ptr; } /* For stabs in ECOFF, the first symbol must be @stabs. This is a signal to gdb. */ if (stabs_seen == 0) mark_stabs (0); /* Line number stabs are handled differently, since they have two values, the line number and the address of the label. We use the index field (aka desc) to hold the line number, and the value field to hold the address. The symbol type is st_Label, which should be different from the other stabs, so that gdb can recognize it. */ if (type == N_SLINE) { SYMR dummy_symr; char *name; char name_end; #ifndef NO_LISTING if (listing) listing_source_line ((unsigned int) desc); #endif dummy_symr.index = desc; if (dummy_symr.index != desc) { as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), desc, what); return; } name = input_line_pointer; name_end = get_symbol_end (); sym = symbol_find_or_make (name); *input_line_pointer = name_end; value = 0; addend = 0; st = st_Label; sc = sc_Text; indx = desc; } else { #ifndef NO_LISTING if (listing && (type == N_SO || type == N_SOL)) listing_source_file (string); #endif if (ISDIGIT (*input_line_pointer) || *input_line_pointer == '-' || *input_line_pointer == '+') { st = st_Nil; sc = sc_Nil; sym = (symbolS *) NULL; value = get_absolute_expression (); addend = 0; } else if (! is_name_beginner ((unsigned char) *input_line_pointer)) { as_warn (_("illegal .stab%c directive, bad character"), what); return; } else { expressionS exp; sc = sc_Nil; st = st_Nil; expression (&exp); if (exp.X_op == O_constant) { sym = NULL; value = exp.X_add_number; addend = 0; } else if (exp.X_op == O_symbol) { sym = exp.X_add_symbol; value = 0; addend = exp.X_add_number; } else { sym = make_expr_symbol (&exp); value = 0; addend = 0; } } indx = ECOFF_MARK_STAB (type); } /* Don't store the stabs symbol we are creating as the type of the ECOFF symbol. We want to compute the type of the ECOFF symbol independently. */ if (sym != (symbolS *) NULL) hold = symbol_get_obj (sym)->ecoff_symbol; (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); if (sym != (symbolS *) NULL) symbol_get_obj (sym)->ecoff_symbol = hold; /* Restore normal file type. */ cur_file_ptr = save_file_ptr; } /* Frob an ECOFF symbol. Small common symbols go into a special .scommon section rather than bfd_com_section. */ void ecoff_frob_symbol (symbolS *sym) { if (S_IS_COMMON (sym) && S_GET_VALUE (sym) > 0 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) { static asection scom_section; static asymbol scom_symbol; /* We must construct a fake section similar to bfd_com_section but with the name .scommon. */ if (scom_section.name == NULL) { scom_section = bfd_com_section; scom_section.name = ".scommon"; scom_section.output_section = &scom_section; scom_section.symbol = &scom_symbol; scom_section.symbol_ptr_ptr = &scom_section.symbol; scom_symbol = *bfd_com_section.symbol; scom_symbol.name = ".scommon"; scom_symbol.section = &scom_section; } S_SET_SEGMENT (sym, &scom_section); } /* Double check weak symbols. */ if (S_IS_WEAK (sym)) { if (S_IS_COMMON (sym)) as_bad (_("symbol `%s' can not be both weak and common"), S_GET_NAME (sym)); } } /* Add bytes to the symbolic information buffer. */ static char * ecoff_add_bytes (char **buf, char **bufend, char *bufptr, unsigned long need) { unsigned long at; unsigned long want; at = bufptr - *buf; need -= *bufend - bufptr; if (need < PAGE_SIZE) need = PAGE_SIZE; want = (*bufend - *buf) + need; *buf = xrealloc (*buf, want); *bufend = *buf + want; return *buf + at; } /* Adjust the symbolic information buffer to the alignment required for the ECOFF target debugging information. */ static unsigned long ecoff_padding_adjust (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset, char **bufptrptr) { bfd_size_type align; align = backend->debug_align; if ((offset & (align - 1)) != 0) { unsigned long add; add = align - (offset & (align - 1)); if ((unsigned long) (*bufend - (*buf + offset)) < add) (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); memset (*buf + offset, 0, add); offset += add; if (bufptrptr != (char **) NULL) *bufptrptr = *buf + offset; } return offset; } /* Build the line number information. */ static unsigned long ecoff_build_lineno (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset, long *linecntptr) { char *bufptr; register lineno_list_t *l; lineno_list_t *last; efdr_t *file; proc_t *proc; unsigned long c; long iline; long totcount; lineno_list_t first; lineno_list_t *local_first_lineno = first_lineno; if (linecntptr != (long *) NULL) *linecntptr = 0; bufptr = *buf + offset; file = (efdr_t *) NULL; proc = (proc_t *) NULL; last = (lineno_list_t *) NULL; c = offset; iline = 0; totcount = 0; /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to remove this code. */ /* For some reason the address of the first procedure is ignored when reading line numbers. This doesn't matter if the address of the first procedure is 0, but when gcc is generating MIPS embedded PIC code, it will put strings in the .text section before the first procedure. We cope by inserting a dummy line if the address of the first procedure is not 0. Hopefully this won't screw things up too badly. Don't do this for ECOFF assembly source line numbers. They work without this extra attention. */ if (debug_type != DEBUG_ECOFF && first_proc_ptr != (proc_t *) NULL && local_first_lineno != (lineno_list_t *) NULL && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) + bfd_get_section_vma (stdoutput, S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) != 0)) { first.file = local_first_lineno->file; first.proc = local_first_lineno->proc; first.frag = &zero_address_frag; first.paddr = 0; first.lineno = 0; first.next = local_first_lineno; local_first_lineno = &first; } for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) { long count; long delta; /* Get the offset to the memory address of the next line number (in words). Do this first, so that we can skip ahead to the next useful line number entry. */ if (l->next == (lineno_list_t *) NULL) { /* We want a count of zero, but it will be decremented before it is used. */ count = 1; } else if (l->next->frag->fr_address + l->next->paddr > l->frag->fr_address + l->paddr) { count = ((l->next->frag->fr_address + l->next->paddr - (l->frag->fr_address + l->paddr)) >> 2); } else { /* Don't change last, so we still get the right delta. */ continue; } if (l->file != file || l->proc != proc) { if (l->proc != proc && proc != (proc_t *) NULL) proc->pdr.lnHigh = last->lineno; if (l->file != file && file != (efdr_t *) NULL) { file->fdr.cbLine = c - file->fdr.cbLineOffset; file->fdr.cline = totcount + count; if (linecntptr != (long *) NULL) *linecntptr += totcount + count; totcount = 0; } if (l->file != file) { efdr_t *last_file = file; file = l->file; if (last_file != (efdr_t *) NULL) file->fdr.ilineBase = last_file->fdr.ilineBase + last_file->fdr.cline; else file->fdr.ilineBase = 0; file->fdr.cbLineOffset = c; } if (l->proc != proc) { proc = l->proc; if (proc != (proc_t *) NULL) { proc->pdr.lnLow = l->lineno; proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; proc->pdr.iline = totcount; } } last = (lineno_list_t *) NULL; } totcount += count; /* Get the offset to this line number. */ if (last == (lineno_list_t *) NULL) delta = 0; else delta = l->lineno - last->lineno; /* Put in the offset to this line number. */ while (delta != 0) { int setcount; /* 1 is added to each count read. */ --count; /* We can only adjust the word count by up to 15 words at a time. */ if (count <= 0x0f) { setcount = count; count = 0; } else { setcount = 0x0f; count -= 0x0f; } if (delta >= -7 && delta <= 7) { if (bufptr >= *bufend) bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); *bufptr++ = setcount + (delta << 4); delta = 0; ++c; } else { int set; if (*bufend - bufptr < 3) bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); *bufptr++ = setcount + (8 << 4); if (delta < -0x8000) { set = -0x8000; delta += 0x8000; } else if (delta > 0x7fff) { set = 0x7fff; delta -= 0x7fff; } else { set = delta; delta = 0; } *bufptr++ = set >> 8; *bufptr++ = set & 0xffff; c += 3; } } /* Finish adjusting the count. */ while (count > 0) { if (bufptr >= *bufend) bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); /* 1 is added to each count read. */ --count; if (count > 0x0f) { *bufptr++ = 0x0f; count -= 0x0f; } else { *bufptr++ = count; count = 0; } ++c; } ++iline; last = l; } if (proc != (proc_t *) NULL) proc->pdr.lnHigh = last->lineno; if (file != (efdr_t *) NULL) { file->fdr.cbLine = c - file->fdr.cbLineOffset; file->fdr.cline = totcount; } if (linecntptr != (long *) NULL) *linecntptr += totcount; c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); return c; } /* Build and swap out the symbols. */ static unsigned long ecoff_build_symbols (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset) { const bfd_size_type external_sym_size = backend->external_sym_size; void (* const swap_sym_out) (bfd *, const SYMR *, void *) = backend->swap_sym_out; char *sym_out; long isym; vlinks_t *file_link; sym_out = *buf + offset; isym = 0; /* The symbols are stored by file. */ for (file_link = file_desc.first; file_link != (vlinks_t *) NULL; file_link = file_link->next) { int ifilesym; int fil_cnt; efdr_t *fil_ptr; efdr_t *fil_end; if (file_link->next == (vlinks_t *) NULL) fil_cnt = file_desc.objects_last_page; else fil_cnt = file_desc.objects_per_page; fil_ptr = file_link->datum->file; fil_end = fil_ptr + fil_cnt; for (; fil_ptr < fil_end; fil_ptr++) { vlinks_t *sym_link; fil_ptr->fdr.isymBase = isym; ifilesym = isym; for (sym_link = fil_ptr->symbols.first; sym_link != (vlinks_t *) NULL; sym_link = sym_link->next) { int sym_cnt; localsym_t *sym_ptr; localsym_t *sym_end; if (sym_link->next == (vlinks_t *) NULL) sym_cnt = fil_ptr->symbols.objects_last_page; else sym_cnt = fil_ptr->symbols.objects_per_page; sym_ptr = sym_link->datum->sym; sym_end = sym_ptr + sym_cnt; for (; sym_ptr < sym_end; sym_ptr++) { int local; symbolS *as_sym; forward_t *f; know (sym_ptr->file_ptr == fil_ptr); /* If there is no associated gas symbol, then this is a pure debugging symbol. We have already added the name (if any) to fil_ptr->strings. Otherwise we must decide whether this is an external or a local symbol (actually, it may be both if the local provides additional debugging information for the external). */ local = 1; as_sym = sym_ptr->as_sym; if (as_sym != (symbolS *) NULL) { symint_t indx; /* The value of a block start symbol is the offset from the start of the procedure. For other symbols we just use the gas value (but we must offset it by the vma of the section, just as BFD does, because BFD will not see this value). */ if (sym_ptr->ecoff_sym.asym.st == (int) st_Block && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) { symbolS *begin_sym; know (sym_ptr->proc_ptr != (proc_t *) NULL); begin_sym = sym_ptr->proc_ptr->sym->as_sym; if (S_GET_SEGMENT (as_sym) != S_GET_SEGMENT (begin_sym)) as_warn (_(".begin/.bend in different segments")); sym_ptr->ecoff_sym.asym.value = S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); } else sym_ptr->ecoff_sym.asym.value = (S_GET_VALUE (as_sym) + bfd_get_section_vma (stdoutput, S_GET_SEGMENT (as_sym)) + sym_ptr->addend); sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym); /* Set st_Proc to st_StaticProc for local functions. */ if (sym_ptr->ecoff_sym.asym.st == st_Proc && S_IS_DEFINED (as_sym) && ! S_IS_EXTERNAL (as_sym) && ! S_IS_WEAK (as_sym)) sym_ptr->ecoff_sym.asym.st = st_StaticProc; /* Get the type and storage class based on where the symbol actually wound up. Traditionally, N_LBRAC and N_RBRAC are *not* relocated. */ indx = sym_ptr->ecoff_sym.asym.index; if (sym_ptr->ecoff_sym.asym.st == st_Nil && sym_ptr->ecoff_sym.asym.sc == sc_Nil && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC) && (ECOFF_UNMARK_STAB (indx) != N_RBRAC)))) { segT seg; const char *segname; st_t st; sc_t sc; seg = S_GET_SEGMENT (as_sym); segname = segment_name (seg); if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) && (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym) || ! S_IS_DEFINED (as_sym))) { if ((symbol_get_bfdsym (as_sym)->flags & BSF_FUNCTION) != 0) st = st_Proc; else st = st_Global; } else if (seg == text_section) st = st_Label; else st = st_Static; if (! S_IS_DEFINED (as_sym)) { valueT s; s = symbol_get_obj (as_sym)->ecoff_extern_size; if (s == 0 || s > bfd_get_gp_size (stdoutput)) sc = sc_Undefined; else { sc = sc_SUndefined; sym_ptr->ecoff_sym.asym.value = s; } #ifdef S_SET_SIZE S_SET_SIZE (as_sym, s); #endif } else if (S_IS_COMMON (as_sym)) { if (S_GET_VALUE (as_sym) > 0 && (S_GET_VALUE (as_sym) <= bfd_get_gp_size (stdoutput))) sc = sc_SCommon; else sc = sc_Common; } else if (seg == text_section) sc = sc_Text; else if (seg == data_section) sc = sc_Data; else if (strcmp (segname, ".rdata") == 0 || strcmp (segname, ".rodata") == 0) sc = sc_RData; else if (strcmp (segname, ".sdata") == 0) sc = sc_SData; else if (seg == bss_section) sc = sc_Bss; else if (strcmp (segname, ".sbss") == 0) sc = sc_SBss; else if (seg == &bfd_abs_section) sc = sc_Abs; else { /* This must be a user named section. This is not possible in ECOFF, but it is in ELF. */ sc = sc_Data; } sym_ptr->ecoff_sym.asym.st = (int) st; sym_ptr->ecoff_sym.asym.sc = (int) sc; } /* This is just an external symbol if it is outside a procedure and it has a type. FIXME: g++ will generate symbols which have different names in the debugging information than the actual symbol. Should we handle them here? */ if ((S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym) || ! S_IS_DEFINED (as_sym)) && sym_ptr->proc_ptr == (proc_t *) NULL && sym_ptr->ecoff_sym.asym.st != (int) st_Nil && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)) local = 0; /* This is just an external symbol if it is a common symbol. */ if (S_IS_COMMON (as_sym)) local = 0; /* If an st_end symbol has an associated gas symbol, then it is a local label created for a .bend or .end directive. Stabs line numbers will have \001 in the names. */ if (local && sym_ptr->ecoff_sym.asym.st != st_End && strchr (sym_ptr->name, '\001') == 0) sym_ptr->ecoff_sym.asym.iss = add_string (&fil_ptr->strings, fil_ptr->str_hash, sym_ptr->name, (shash_t **) NULL); } /* We now know the index of this symbol; fill in locations that have been waiting for that information. */ if (sym_ptr->begin_ptr != (localsym_t *) NULL) { localsym_t *begin_ptr; st_t begin_type; know (local); begin_ptr = sym_ptr->begin_ptr; know (begin_ptr->sym_index != -1); sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index; if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) sym_ptr->ecoff_sym.asym.iss = begin_ptr->ecoff_sym.asym.iss; begin_type = begin_ptr->ecoff_sym.asym.st; if (begin_type == st_File || begin_type == st_Block) { begin_ptr->ecoff_sym.asym.index = isym - ifilesym + 1; (*swap_sym_out) (stdoutput, &begin_ptr->ecoff_sym.asym, (*buf + offset + (begin_ptr->sym_index * external_sym_size))); } else { know (begin_ptr->index_ptr != (aux_t *) NULL); begin_ptr->index_ptr->data.isym = isym - ifilesym + 1; } /* The value of the symbol marking the end of a procedure is the size of the procedure. The value of the symbol marking the end of a block is the offset from the start of the procedure to the block. */ if (begin_type == st_Proc || begin_type == st_StaticProc) { know (as_sym != (symbolS *) NULL); know (begin_ptr->as_sym != (symbolS *) NULL); if (S_GET_SEGMENT (as_sym) != S_GET_SEGMENT (begin_ptr->as_sym)) as_warn (_(".begin/.bend in different segments")); sym_ptr->ecoff_sym.asym.value = (S_GET_VALUE (as_sym) - S_GET_VALUE (begin_ptr->as_sym)); /* If the size is odd, this is probably a mips16 function; force it to be even. */ if ((sym_ptr->ecoff_sym.asym.value & 1) != 0) ++sym_ptr->ecoff_sym.asym.value; #ifdef S_SET_SIZE S_SET_SIZE (begin_ptr->as_sym, sym_ptr->ecoff_sym.asym.value); #endif } else if (begin_type == st_Block && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) { symbolS *begin_sym; know (as_sym != (symbolS *) NULL); know (sym_ptr->proc_ptr != (proc_t *) NULL); begin_sym = sym_ptr->proc_ptr->sym->as_sym; if (S_GET_SEGMENT (as_sym) != S_GET_SEGMENT (begin_sym)) as_warn (_(".begin/.bend in different segments")); sym_ptr->ecoff_sym.asym.value = S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); } } for (f = sym_ptr->forward_ref; f != (forward_t *) NULL; f = f->next) { know (local); f->ifd_ptr->data.isym = fil_ptr->file_index; f->index_ptr->data.rndx.index = isym - ifilesym; } if (local) { if ((bfd_size_type)(*bufend - sym_out) < external_sym_size) sym_out = ecoff_add_bytes (buf, bufend, sym_out, external_sym_size); (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym, sym_out); sym_out += external_sym_size; sym_ptr->sym_index = isym; if (sym_ptr->proc_ptr != (proc_t *) NULL && sym_ptr->proc_ptr->sym == sym_ptr) sym_ptr->proc_ptr->pdr.isym = isym - ifilesym; ++isym; } /* Record the local symbol index and file number in case this is an external symbol. Note that this destroys the asym.index field. */ if (as_sym != (symbolS *) NULL && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr) { if ((sym_ptr->ecoff_sym.asym.st == st_Proc || sym_ptr->ecoff_sym.asym.st == st_StaticProc) && local) sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1; sym_ptr->ecoff_sym.ifd = fil_ptr->file_index; /* Don't try to merge an FDR which has an external symbol attached to it. */ if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym)) fil_ptr->fdr.fMerge = 0; } } } fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase; } } return offset + isym * external_sym_size; } /* Swap out the procedure information. */ static unsigned long ecoff_build_procs (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset) { const bfd_size_type external_pdr_size = backend->external_pdr_size; void (* const swap_pdr_out) (bfd *, const PDR *, void *) = backend->swap_pdr_out; char *pdr_out; long iproc; vlinks_t *file_link; pdr_out = *buf + offset; iproc = 0; /* The procedures are stored by file. */ for (file_link = file_desc.first; file_link != (vlinks_t *) NULL; file_link = file_link->next) { int fil_cnt; efdr_t *fil_ptr; efdr_t *fil_end; if (file_link->next == (vlinks_t *) NULL) fil_cnt = file_desc.objects_last_page; else fil_cnt = file_desc.objects_per_page; fil_ptr = file_link->datum->file; fil_end = fil_ptr + fil_cnt; for (; fil_ptr < fil_end; fil_ptr++) { vlinks_t *proc_link; int first; fil_ptr->fdr.ipdFirst = iproc; first = 1; for (proc_link = fil_ptr->procs.first; proc_link != (vlinks_t *) NULL; proc_link = proc_link->next) { int prc_cnt; proc_t *proc_ptr; proc_t *proc_end; if (proc_link->next == (vlinks_t *) NULL) prc_cnt = fil_ptr->procs.objects_last_page; else prc_cnt = fil_ptr->procs.objects_per_page; proc_ptr = proc_link->datum->proc; proc_end = proc_ptr + prc_cnt; for (; proc_ptr < proc_end; proc_ptr++) { symbolS *adr_sym; unsigned long adr; adr_sym = proc_ptr->sym->as_sym; adr = (S_GET_VALUE (adr_sym) + bfd_get_section_vma (stdoutput, S_GET_SEGMENT (adr_sym))); if (first) { /* This code used to force the adr of the very first fdr to be 0. However, the native tools don't do that, and I can't remember why it used to work that way, so I took it out. */ fil_ptr->fdr.adr = adr; first = 0; } proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size) pdr_out = ecoff_add_bytes (buf, bufend, pdr_out, external_pdr_size); (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); pdr_out += external_pdr_size; ++iproc; } } fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; } } return offset + iproc * external_pdr_size; } /* Swap out the aux information. */ static unsigned long ecoff_build_aux (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset) { int bigendian; union aux_ext *aux_out; long iaux; vlinks_t *file_link; bigendian = bfd_big_endian (stdoutput); aux_out = (union aux_ext *) (*buf + offset); iaux = 0; /* The aux entries are stored by file. */ for (file_link = file_desc.first; file_link != (vlinks_t *) NULL; file_link = file_link->next) { int fil_cnt; efdr_t *fil_ptr; efdr_t *fil_end; if (file_link->next == (vlinks_t *) NULL) fil_cnt = file_desc.objects_last_page; else fil_cnt = file_desc.objects_per_page; fil_ptr = file_link->datum->file; fil_end = fil_ptr + fil_cnt; for (; fil_ptr < fil_end; fil_ptr++) { vlinks_t *aux_link; fil_ptr->fdr.fBigendian = bigendian; fil_ptr->fdr.iauxBase = iaux; for (aux_link = fil_ptr->aux_syms.first; aux_link != (vlinks_t *) NULL; aux_link = aux_link->next) { int aux_cnt; aux_t *aux_ptr; aux_t *aux_end; if (aux_link->next == (vlinks_t *) NULL) aux_cnt = fil_ptr->aux_syms.objects_last_page; else aux_cnt = fil_ptr->aux_syms.objects_per_page; aux_ptr = aux_link->datum->aux; aux_end = aux_ptr + aux_cnt; for (; aux_ptr < aux_end; aux_ptr++) { if ((unsigned long) (*bufend - (char *) aux_out) < sizeof (union aux_ext)) aux_out = ((union aux_ext *) ecoff_add_bytes (buf, bufend, (char *) aux_out, sizeof (union aux_ext))); switch (aux_ptr->type) { case aux_tir: (*backend->swap_tir_out) (bigendian, &aux_ptr->data.ti, &aux_out->a_ti); break; case aux_rndx: (*backend->swap_rndx_out) (bigendian, &aux_ptr->data.rndx, &aux_out->a_rndx); break; case aux_dnLow: AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, aux_out); break; case aux_dnHigh: AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, aux_out); break; case aux_isym: AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, aux_out); break; case aux_iss: AUX_PUT_ISS (bigendian, aux_ptr->data.iss, aux_out); break; case aux_width: AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, aux_out); break; case aux_count: AUX_PUT_COUNT (bigendian, aux_ptr->data.count, aux_out); break; } ++aux_out; ++iaux; } } fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; } } return ecoff_padding_adjust (backend, buf, bufend, offset + iaux * sizeof (union aux_ext), (char **) NULL); } /* Copy out the strings from a varray_t. This returns the number of bytes copied, rather than the new offset. */ static unsigned long ecoff_build_strings (char **buf, char **bufend, unsigned long offset, varray_t *vp) { unsigned long istr; char *str_out; vlinks_t *str_link; str_out = *buf + offset; istr = 0; for (str_link = vp->first; str_link != (vlinks_t *) NULL; str_link = str_link->next) { unsigned long str_cnt; if (str_link->next == (vlinks_t *) NULL) str_cnt = vp->objects_last_page; else str_cnt = vp->objects_per_page; if ((unsigned long)(*bufend - str_out) < str_cnt) str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); memcpy (str_out, str_link->datum->byte, str_cnt); str_out += str_cnt; istr += str_cnt; } return istr; } /* Dump out the local strings. */ static unsigned long ecoff_build_ss (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset) { long iss; vlinks_t *file_link; iss = 0; for (file_link = file_desc.first; file_link != (vlinks_t *) NULL; file_link = file_link->next) { int fil_cnt; efdr_t *fil_ptr; efdr_t *fil_end; if (file_link->next == (vlinks_t *) NULL) fil_cnt = file_desc.objects_last_page; else fil_cnt = file_desc.objects_per_page; fil_ptr = file_link->datum->file; fil_end = fil_ptr + fil_cnt; for (; fil_ptr < fil_end; fil_ptr++) { long ss_cnt; fil_ptr->fdr.issBase = iss; ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, &fil_ptr->strings); fil_ptr->fdr.cbSs = ss_cnt; iss += ss_cnt; } } return ecoff_padding_adjust (backend, buf, bufend, offset + iss, (char **) NULL); } /* Swap out the file descriptors. */ static unsigned long ecoff_build_fdr (const struct ecoff_debug_swap *backend, char **buf, char **bufend, unsigned long offset) { const bfd_size_type external_fdr_size = backend->external_fdr_size; void (* const swap_fdr_out) (bfd *, const FDR *, void *) = backend->swap_fdr_out; long ifile; char *fdr_out; vlinks_t *file_link; ifile = 0; fdr_out = *buf + offset; for (file_link = file_desc.first; file_link != (vlinks_t *) NULL; file_link = file_link->next) { int fil_cnt; efdr_t *fil_ptr; efdr_t *fil_end; if (file_link->next == (vlinks_t *) NULL) fil_cnt = file_desc.objects_last_page; else fil_cnt = file_desc.objects_per_page; fil_ptr = file_link->datum->file; fil_end = fil_ptr + fil_cnt; for (; fil_ptr < fil_end; fil_ptr++) { if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size) fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, external_fdr_size); (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); fdr_out += external_fdr_size; ++ifile; } } return offset + ifile * external_fdr_size; } /* Set up the external symbols. These are supposed to be handled by the backend. This routine just gets the right information and calls a backend function to deal with it. */ static void ecoff_setup_ext (void) { register symbolS *sym; for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) { if (symbol_get_obj (sym)->ecoff_symbol == NULL) continue; /* If this is a local symbol, then force the fields to zero. */ if (! S_IS_EXTERNAL (sym) && ! S_IS_WEAK (sym) && S_IS_DEFINED (sym)) { struct localsym *lsym; lsym = symbol_get_obj (sym)->ecoff_symbol; lsym->ecoff_sym.asym.value = 0; lsym->ecoff_sym.asym.st = (int) st_Nil; lsym->ecoff_sym.asym.sc = (int) sc_Nil; lsym->ecoff_sym.asym.index = indexNil; } obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym); } } /* Build the ECOFF debugging information. */ unsigned long ecoff_build_debug (HDRR *hdr, char **bufp, const struct ecoff_debug_swap *backend) { const bfd_size_type external_pdr_size = backend->external_pdr_size; tag_t *ptag; tag_t *ptag_next; efdr_t *fil_ptr; int end_warning; efdr_t *hold_file_ptr; proc_t *hold_proc_ptr; symbolS *sym; char *buf; char *bufend; unsigned long offset; /* Make sure we have a file. */ if (first_file == (efdr_t *) NULL) add_file ((const char *) NULL, 0, 1); /* Handle any top level tags. */ for (ptag = top_tag_head->first_tag; ptag != (tag_t *) NULL; ptag = ptag_next) { if (ptag->forward_ref != (forward_t *) NULL) add_unknown_tag (ptag); ptag_next = ptag->same_block; ptag->hash_ptr->tag_ptr = ptag->same_name; free_tag (ptag); } free_thead (top_tag_head); /* Look through the symbols. Add debugging information for each symbol that has not already received it. */ hold_file_ptr = cur_file_ptr; hold_proc_ptr = cur_proc_ptr; cur_proc_ptr = (proc_t *) NULL; for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) { if (symbol_get_obj (sym)->ecoff_symbol != NULL || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0) continue; cur_file_ptr = symbol_get_obj (sym)->ecoff_file; add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, (bfd_vma) 0, S_GET_VALUE (sym), indexNil); } cur_proc_ptr = hold_proc_ptr; cur_file_ptr = hold_file_ptr; /* Output an ending symbol for all the files. We have to do this here for the last file, so we may as well do it for all of the files. */ end_warning = 0; for (fil_ptr = first_file; fil_ptr != (efdr_t *) NULL; fil_ptr = fil_ptr->next_file) { cur_file_ptr = fil_ptr; while (cur_file_ptr->cur_scope != (scope_t *) NULL && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) { cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; if (! end_warning && ! cur_file_ptr->fake) { as_warn (_("missing .end or .bend at end of file")); end_warning = 1; } } if (cur_file_ptr->cur_scope != (scope_t *) NULL) (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, (symbolS *) NULL, (bfd_vma) 0, (symint_t) 0, (symint_t) 0); } /* Build the symbolic information. */ offset = 0; buf = xmalloc (PAGE_SIZE); bufend = buf + PAGE_SIZE; /* Build the line number information. */ hdr->cbLineOffset = offset; offset = ecoff_build_lineno (backend, &buf, &bufend, offset, &hdr->ilineMax); hdr->cbLine = offset - hdr->cbLineOffset; /* We don't use dense numbers at all. */ hdr->idnMax = 0; hdr->cbDnOffset = 0; /* We can't build the PDR table until we have built the symbols, because a PDR contains a symbol index. However, we set aside space at this point. */ hdr->ipdMax = proc_cnt; hdr->cbPdOffset = offset; if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size) (void) ecoff_add_bytes (&buf, &bufend, buf + offset, proc_cnt * external_pdr_size); offset += proc_cnt * external_pdr_size; /* Build the local symbols. */ hdr->cbSymOffset = offset; offset = ecoff_build_symbols (backend, &buf, &bufend, offset); hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; /* Building the symbols initializes the symbol index in the PDR's. Now we can swap out the PDR's. */ (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); /* We don't use optimization symbols. */ hdr->ioptMax = 0; hdr->cbOptOffset = 0; /* Swap out the auxiliary type information. */ hdr->cbAuxOffset = offset; offset = ecoff_build_aux (backend, &buf, &bufend, offset); hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); /* Copy out the local strings. */ hdr->cbSsOffset = offset; offset = ecoff_build_ss (backend, &buf, &bufend, offset); hdr->issMax = offset - hdr->cbSsOffset; /* We don't use relative file descriptors. */ hdr->crfd = 0; hdr->cbRfdOffset = 0; /* Swap out the file descriptors. */ hdr->cbFdOffset = offset; offset = ecoff_build_fdr (backend, &buf, &bufend, offset); hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; /* Set up the external symbols, which are handled by the BFD back end. */ hdr->issExtMax = 0; hdr->cbSsExtOffset = 0; hdr->iextMax = 0; hdr->cbExtOffset = 0; ecoff_setup_ext (); know ((offset & (backend->debug_align - 1)) == 0); /* FIXME: This value should be determined from the .verstamp directive, with reasonable defaults in config files. */ #ifdef TC_ALPHA hdr->vstamp = 0x030b; #else hdr->vstamp = 0x020b; #endif *bufp = buf; return offset; } /* Allocate a cluster of pages. */ #ifndef MALLOC_CHECK static page_type * allocate_cluster (unsigned long npages) { register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); #ifdef ECOFF_DEBUG if (debug > 3) fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); #endif memset (value, 0, npages * PAGE_USIZE); return value; } static page_type *cluster_ptr = NULL; static unsigned long pages_left = 0; #endif /* MALLOC_CHECK */ /* Allocate one page (which is initialized to 0). */ static page_type * allocate_page (void) { #ifndef MALLOC_CHECK if (pages_left == 0) { pages_left = MAX_CLUSTER_PAGES; cluster_ptr = allocate_cluster (pages_left); } pages_left--; return cluster_ptr++; #else /* MALLOC_CHECK */ page_type *ptr; ptr = xmalloc (PAGE_USIZE); memset (ptr, 0, PAGE_USIZE); return ptr; #endif /* MALLOC_CHECK */ } /* Allocate scoping information. */ static scope_t * allocate_scope (void) { register scope_t *ptr; static scope_t initial_scope; #ifndef MALLOC_CHECK ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope; if (ptr != (scope_t *) NULL) alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free; else { register int unallocated = alloc_counts[(int) alloc_type_scope].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (scope_t); alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_scope].total_pages++; } ptr = &cur_page->scope[--unallocated]; alloc_counts[(int) alloc_type_scope].unallocated = unallocated; } #else ptr = (scope_t *) xmalloc (sizeof (scope_t)); #endif alloc_counts[(int) alloc_type_scope].total_alloc++; *ptr = initial_scope; return ptr; } /* Free scoping information. */ static void free_scope (scope_t *ptr) { alloc_counts[(int) alloc_type_scope].total_free++; #ifndef MALLOC_CHECK ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope; alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr; #else free ((void *) ptr); #endif } /* Allocate links for pages in a virtual array. */ static vlinks_t * allocate_vlinks (void) { register vlinks_t *ptr; static vlinks_t initial_vlinks; #ifndef MALLOC_CHECK register int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (vlinks_t); alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_vlinks].total_pages++; } ptr = &cur_page->vlinks[--unallocated]; alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated; #else ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t)); #endif alloc_counts[(int) alloc_type_vlinks].total_alloc++; *ptr = initial_vlinks; return ptr; } /* Allocate string hash buckets. */ static shash_t * allocate_shash (void) { register shash_t *ptr; static shash_t initial_shash; #ifndef MALLOC_CHECK register int unallocated = alloc_counts[(int) alloc_type_shash].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (shash_t); alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_shash].total_pages++; } ptr = &cur_page->shash[--unallocated]; alloc_counts[(int) alloc_type_shash].unallocated = unallocated; #else ptr = (shash_t *) xmalloc (sizeof (shash_t)); #endif alloc_counts[(int) alloc_type_shash].total_alloc++; *ptr = initial_shash; return ptr; } /* Allocate type hash buckets. */ static thash_t * allocate_thash (void) { register thash_t *ptr; static thash_t initial_thash; #ifndef MALLOC_CHECK register int unallocated = alloc_counts[(int) alloc_type_thash].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (thash_t); alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_thash].total_pages++; } ptr = &cur_page->thash[--unallocated]; alloc_counts[(int) alloc_type_thash].unallocated = unallocated; #else ptr = (thash_t *) xmalloc (sizeof (thash_t)); #endif alloc_counts[(int) alloc_type_thash].total_alloc++; *ptr = initial_thash; return ptr; } /* Allocate structure, union, or enum tag information. */ static tag_t * allocate_tag (void) { register tag_t *ptr; static tag_t initial_tag; #ifndef MALLOC_CHECK ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag; if (ptr != (tag_t *) NULL) alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free; else { register int unallocated = alloc_counts[(int) alloc_type_tag].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (tag_t); alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_tag].total_pages++; } ptr = &cur_page->tag[--unallocated]; alloc_counts[(int) alloc_type_tag].unallocated = unallocated; } #else ptr = (tag_t *) xmalloc (sizeof (tag_t)); #endif alloc_counts[(int) alloc_type_tag].total_alloc++; *ptr = initial_tag; return ptr; } /* Free scoping information. */ static void free_tag (tag_t *ptr) { alloc_counts[(int) alloc_type_tag].total_free++; #ifndef MALLOC_CHECK ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag; alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr; #else free ((PTR_T) ptr); #endif } /* Allocate forward reference to a yet unknown tag. */ static forward_t * allocate_forward (void) { register forward_t *ptr; static forward_t initial_forward; #ifndef MALLOC_CHECK register int unallocated = alloc_counts[(int) alloc_type_forward].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (forward_t); alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_forward].total_pages++; } ptr = &cur_page->forward[--unallocated]; alloc_counts[(int) alloc_type_forward].unallocated = unallocated; #else ptr = (forward_t *) xmalloc (sizeof (forward_t)); #endif alloc_counts[(int) alloc_type_forward].total_alloc++; *ptr = initial_forward; return ptr; } /* Allocate head of type hash list. */ static thead_t * allocate_thead (void) { register thead_t *ptr; static thead_t initial_thead; #ifndef MALLOC_CHECK ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead; if (ptr != (thead_t *) NULL) alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free; else { register int unallocated = alloc_counts[(int) alloc_type_thead].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (thead_t); alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_thead].total_pages++; } ptr = &cur_page->thead[--unallocated]; alloc_counts[(int) alloc_type_thead].unallocated = unallocated; } #else ptr = (thead_t *) xmalloc (sizeof (thead_t)); #endif alloc_counts[(int) alloc_type_thead].total_alloc++; *ptr = initial_thead; return ptr; } /* Free scoping information. */ static void free_thead (thead_t *ptr) { alloc_counts[(int) alloc_type_thead].total_free++; #ifndef MALLOC_CHECK ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead; alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr; #else free ((PTR_T) ptr); #endif } static lineno_list_t * allocate_lineno_list (void) { register lineno_list_t *ptr; static lineno_list_t initial_lineno_list; #ifndef MALLOC_CHECK register int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated; register page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page; if (unallocated == 0) { unallocated = PAGE_SIZE / sizeof (lineno_list_t); alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page (); alloc_counts[(int) alloc_type_lineno].total_pages++; } ptr = &cur_page->lineno[--unallocated]; alloc_counts[(int) alloc_type_lineno].unallocated = unallocated; #else ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t)); #endif alloc_counts[(int) alloc_type_lineno].total_alloc++; *ptr = initial_lineno_list; return ptr; } void ecoff_set_gp_prolog_size (int sz) { if (cur_proc_ptr == 0) return; cur_proc_ptr->pdr.gp_prologue = sz; if (cur_proc_ptr->pdr.gp_prologue != sz) { as_warn (_("GP prologue size exceeds field size, using 0 instead")); cur_proc_ptr->pdr.gp_prologue = 0; } cur_proc_ptr->pdr.gp_used = 1; } int ecoff_no_current_file (void) { return cur_file_ptr == (efdr_t *) NULL; } void ecoff_generate_asm_lineno (void) { unsigned int lineno; char *filename; lineno_list_t *list; as_where (&filename, &lineno); if (current_stabs_filename == (char *) NULL || strcmp (current_stabs_filename, filename)) add_file (filename, 0, 1); list = allocate_lineno_list (); list->next = (lineno_list_t *) NULL; list->file = cur_file_ptr; list->proc = cur_proc_ptr; list->frag = frag_now; list->paddr = frag_now_fix (); list->lineno = lineno; /* We don't want to merge files which have line numbers. */ cur_file_ptr->fdr.fMerge = 0; /* A .loc directive will sometimes appear before a .ent directive, which means that cur_proc_ptr will be NULL here. Arrange to patch this up. */ if (cur_proc_ptr == (proc_t *) NULL) { lineno_list_t **pl; pl = &noproc_lineno; while (*pl != (lineno_list_t *) NULL) pl = &(*pl)->next; *pl = list; } else { last_lineno = list; *last_lineno_ptr = list; last_lineno_ptr = &list->next; } } #else void ecoff_generate_asm_lineno (void) { } #endif /* ECOFF_DEBUGGING */
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