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[/] [openrisc/] [trunk/] [orpsocv2/] [sw/] [utils/] [or32-idecode/] [or32-opc.c] - Rev 312
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/* Table of opcodes for the OpenRISC 1000 ISA. Copyright 2002, 2004, 2005, 2007 Free Software Foundation, Inc. Contributed by Damjan Lampret (lampret@opencores.org). This file is part of the GNU opcodes library. This library 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. It 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 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ /* We treat all letters the same in encode/decode routines so we need to assign some characteristics to them like signess etc. */ #include <string.h> #include <stdio.h> #include <stdlib.h> //#include "safe-ctype.h" #include <ctype.h> #include "ansidecl.h" /* #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAS_EXECUTION # ifdef HAVE_INTTYPES_H # include <inttypes.h> // ...but to get arch.h we need uint{8,16,32}_t.. # endif # include "port.h" # include "arch.h" // ...but to get abstract.h, we need oraddr_t... # include "abstract.h" // To get struct iqueue_entry... # include "debug.h" // To get debug() #endif */ #include "or32.h" const struct or32_letter or32_letters[] = { { 'A', NUM_UNSIGNED }, { 'B', NUM_UNSIGNED }, { 'D', NUM_UNSIGNED }, { 'I', NUM_SIGNED }, { 'K', NUM_UNSIGNED }, { 'L', NUM_UNSIGNED }, { 'N', NUM_SIGNED }, { '0', NUM_UNSIGNED }, { '\0', 0 } /* Dummy entry. */ }; /* Opcode encoding: machine[31:30]: first two bits of opcode 00 - neither of source operands is GPR 01 - second source operand is GPR (rB) 10 - first source operand is GPR (rA) 11 - both source operands are GPRs (rA and rB) machine[29:26]: next four bits of opcode machine[25:00]: instruction operands (specific to individual instruction) Recommendation: irrelevant instruction bits should be set with a value of bits in same positions of instruction preceding current instruction in the code (when assembling). */ #ifdef HAS_EXECUTION # if SIMPLE_EXECUTION # define EFN &l_none # define EF(func) &(func) # define EFI &l_invalid # elif COMPLEX_EXECUTION # define EFN "l_none" # define EFI "l_invalid" # ifdef __GNUC__ # define EF(func) #func # else # define EF(func) "func" # endif # else /* DYNAMIC_EXECUTION */ # define EFN &l_none # define EF(func) &(gen_ ##func) # define EFI &gen_l_invalid # endif #else /* HAS_EXECUTION */ # define EFN &l_none # define EF(func) EFN # define EFI EFN #endif /* HAS_EXECUTION */ const struct or32_opcode or32_opcodes[] = { { "l.j", "N", "00 0x0 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_j), OR32_IF_DELAY, it_jump }, { "l.jal", "N", "00 0x1 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_jal), OR32_IF_DELAY, it_jump }, { "l.bnf", "N", "00 0x3 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bnf), OR32_IF_DELAY | OR32_R_FLAG, it_branch }, { "l.bf", "N", "00 0x4 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bf), OR32_IF_DELAY | OR32_R_FLAG, it_branch }, { "l.nop", "K", "00 0x5 01--- ----- KKKK KKKK KKKK KKKK", EF(l_nop), 0, it_nop }, { "l.movhi", "rD,K", "00 0x6 DDDDD ----0 KKKK KKKK KKKK KKKK", EF(l_movhi), 0, it_movimm }, { "l.macrc", "rD", "00 0x6 DDDDD ----1 0000 0000 0000 0000", EF(l_macrc), 0, it_mac }, { "l.sys", "K", "00 0x8 00000 00000 KKKK KKKK KKKK KKKK", EF(l_sys), 0, it_exception }, { "l.trap", "K", "00 0x8 01000 00000 KKKK KKKK KKKK KKKK", EF(l_trap), 0, it_exception }, { "l.msync", "", "00 0x8 10000 00000 0000 0000 0000 0000", EFN, 0, it_unknown }, { "l.psync", "", "00 0x8 10100 00000 0000 0000 0000 0000", EFN, 0, it_unknown }, { "l.csync", "", "00 0x8 11000 00000 0000 0000 0000 0000", EFN, 0, it_unknown }, { "l.rfe", "", "00 0x9 ----- ----- ---- ---- ---- ----", EF(l_rfe), 0, it_exception }, { "lv.all_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0, it_unknown }, { "lv.all_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0, it_unknown }, { "lv.all_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0, it_unknown }, { "lv.all_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0, it_unknown }, { "lv.all_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x4", EFI, 0, it_unknown }, { "lv.all_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x5", EFI, 0, it_unknown }, { "lv.all_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0, it_unknown }, { "lv.all_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0, it_unknown }, { "lv.all_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x8", EFI, 0, it_unknown }, { "lv.all_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x9", EFI, 0, it_unknown }, { "lv.all_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0xA", EFI, 0, it_unknown }, { "lv.all_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0xB", EFI, 0, it_unknown }, { "lv.any_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x0", EFI, 0, it_unknown }, { "lv.any_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x1", EFI, 0, it_unknown }, { "lv.any_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x2", EFI, 0, it_unknown }, { "lv.any_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x3", EFI, 0, it_unknown }, { "lv.any_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x4", EFI, 0, it_unknown }, { "lv.any_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x5", EFI, 0, it_unknown }, { "lv.any_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x6", EFI, 0, it_unknown }, { "lv.any_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x7", EFI, 0, it_unknown }, { "lv.any_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x8", EFI, 0, it_unknown }, { "lv.any_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x9", EFI, 0, it_unknown }, { "lv.any_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0xA", EFI, 0, it_unknown }, { "lv.any_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0xB", EFI, 0, it_unknown }, { "lv.add.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x0", EFI, 0, it_unknown }, { "lv.add.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x1", EFI, 0, it_unknown }, { "lv.adds.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x2", EFI, 0, it_unknown }, { "lv.adds.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x3", EFI, 0, it_unknown }, { "lv.addu.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x4", EFI, 0, it_unknown }, { "lv.addu.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x5", EFI, 0, it_unknown }, { "lv.addus.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x6", EFI, 0, it_unknown }, { "lv.addus.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x7", EFI, 0, it_unknown }, { "lv.and", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x8", EFI, 0, it_unknown }, { "lv.avg.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x9", EFI, 0, it_unknown }, { "lv.avg.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0xA", EFI, 0, it_unknown }, { "lv.cmp_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x0", EFI, 0, it_unknown }, { "lv.cmp_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x1", EFI, 0, it_unknown }, { "lv.cmp_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x2", EFI, 0, it_unknown }, { "lv.cmp_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x3", EFI, 0, it_unknown }, { "lv.cmp_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x4", EFI, 0, it_unknown }, { "lv.cmp_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x5", EFI, 0, it_unknown }, { "lv.cmp_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x6", EFI, 0, it_unknown }, { "lv.cmp_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x7", EFI, 0, it_unknown }, { "lv.cmp_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x8", EFI, 0, it_unknown }, { "lv.cmp_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x9", EFI, 0, it_unknown }, { "lv.cmp_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0xA", EFI, 0, it_unknown }, { "lv.cmp_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0xB", EFI, 0, it_unknown }, { "lv.madds.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x4", EFI, 0, it_unknown }, { "lv.max.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x5", EFI, 0, it_unknown }, { "lv.max.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x6", EFI, 0, it_unknown }, { "lv.merge.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x7", EFI, 0, it_unknown }, { "lv.merge.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x8", EFI, 0, it_unknown }, { "lv.min.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x9", EFI, 0, it_unknown }, { "lv.min.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xA", EFI, 0, it_unknown }, { "lv.msubs.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xB", EFI, 0, it_unknown }, { "lv.muls.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xC", EFI, 0, it_unknown }, { "lv.nand", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xD", EFI, 0, it_unknown }, { "lv.nor", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xE", EFI, 0, it_unknown }, { "lv.or", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xF", EFI, 0, it_unknown }, { "lv.pack.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x0", EFI, 0, it_unknown }, { "lv.pack.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x1", EFI, 0, it_unknown }, { "lv.packs.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x2", EFI, 0, it_unknown }, { "lv.packs.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x3", EFI, 0, it_unknown }, { "lv.packus.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x4", EFI, 0, it_unknown }, { "lv.packus.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x5", EFI, 0, it_unknown }, { "lv.perm.n", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x6", EFI, 0, it_unknown }, { "lv.rl.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x7", EFI, 0, it_unknown }, { "lv.rl.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x8", EFI, 0, it_unknown }, { "lv.sll.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x9", EFI, 0, it_unknown }, { "lv.sll.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xA", EFI, 0, it_unknown }, { "lv.sll", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xB", EFI, 0, it_unknown }, { "lv.srl.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xC", EFI, 0, it_unknown }, { "lv.srl.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xD", EFI, 0, it_unknown }, { "lv.sra.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xE", EFI, 0, it_unknown }, { "lv.sra.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xF", EFI, 0, it_unknown }, { "lv.srl", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x0", EFI, 0, it_unknown }, { "lv.sub.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x1", EFI, 0, it_unknown }, { "lv.sub.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x2", EFI, 0, it_unknown }, { "lv.subs.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x3", EFI, 0, it_unknown }, { "lv.subs.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x4", EFI, 0, it_unknown }, { "lv.subu.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x5", EFI, 0, it_unknown }, { "lv.subu.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x6", EFI, 0, it_unknown }, { "lv.subus.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x7", EFI, 0, it_unknown }, { "lv.subus.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x8", EFI, 0, it_unknown }, { "lv.unpack.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x9", EFI, 0, it_unknown }, { "lv.unpack.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0xA", EFI, 0, it_unknown }, { "lv.xor", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0xB", EFI, 0, it_unknown }, { "lv.cust1", "", "00 0xA ----- ----- ---- ---- 0xC ----", EFI, 0, it_unknown }, { "lv.cust2", "", "00 0xA ----- ----- ---- ---- 0xD ----", EFI, 0, it_unknown }, { "lv.cust3", "", "00 0xA ----- ----- ---- ---- 0xE ----", EFI, 0, it_unknown }, { "lv.cust4", "", "00 0xA ----- ----- ---- ---- 0xF ----", EFI, 0, it_unknown }, { "l.jr", "rB", "01 0x1 ----- ----- BBBB B--- ---- ----", EF(l_jr), OR32_IF_DELAY, it_jump }, { "l.jalr", "rB", "01 0x2 ----- ----- BBBB B--- ---- ----", EF(l_jalr), OR32_IF_DELAY, it_jump }, { "l.maci", "rA,I", "01 0x3 IIIII AAAAA ---- -III IIII IIII", EF(l_mac), 0, it_mac }, { "l.cust1", "", "01 0xC ----- ----- ---- ---- ---- ----", EF(l_cust1), 0, it_unknown }, { "l.cust2", "", "01 0xD ----- ----- ---- ---- ---- ----", EF(l_cust2), 0, it_unknown }, { "l.cust3", "", "01 0xE ----- ----- ---- ---- ---- ----", EF(l_cust3), 0, it_unknown }, { "l.cust4", "", "01 0xF ----- ----- ---- ---- ---- ----", EF(l_cust4), 0, it_unknown }, { "l.ld", "rD,I(rA)", "10 0x0 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0, it_load }, { "l.lwz", "rD,I(rA)", "10 0x1 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lwz), 0, it_load }, { "l.lws", "rD,I(rA)", "10 0x2 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0, it_load }, { "l.lbz", "rD,I(rA)", "10 0x3 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbz), 0, it_load }, { "l.lbs", "rD,I(rA)", "10 0x4 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbs), 0, it_load }, { "l.lhz", "rD,I(rA)", "10 0x5 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhz), 0, it_load }, { "l.lhs", "rD,I(rA)", "10 0x6 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhs), 0, it_load }, { "l.addi", "rD,rA,I", "10 0x7 DDDDD AAAAA IIII IIII IIII IIII", EF(l_add), OR32_W_FLAG, it_arith }, { "l.addic", "rD,rA,I", "10 0x8 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0, it_arith }, { "l.andi", "rD,rA,K", "10 0x9 DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_and), OR32_W_FLAG, it_arith }, { "l.ori", "rD,rA,K", "10 0xA DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_or), 0, it_arith }, { "l.xori", "rD,rA,I", "10 0xB DDDDD AAAAA IIII IIII IIII IIII", EF(l_xor), 0, it_arith }, { "l.muli", "rD,rA,I", "10 0xC DDDDD AAAAA IIII IIII IIII IIII", EF(l_mul), 0, it_arith }, { "l.mfspr", "rD,rA,K", "10 0xD DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_mfspr), 0, it_move }, { "l.slli", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 00LL LLLL", EF(l_sll), 0, it_shift }, { "l.srli", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 01LL LLLL", EF(l_srl), 0, it_shift }, { "l.srai", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 10LL LLLL", EF(l_sra), 0, it_shift }, { "l.rori", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 11LL LLLL", EFI, 0, it_shift }, { "l.sfeqi", "rA,I", "10 0xF 00000 AAAAA IIII IIII IIII IIII", EF(l_sfeq), OR32_W_FLAG, it_compare }, { "l.sfnei", "rA,I", "10 0xF 00001 AAAAA IIII IIII IIII IIII", EF(l_sfne), OR32_W_FLAG, it_compare }, { "l.sfgtui", "rA,I", "10 0xF 00010 AAAAA IIII IIII IIII IIII", EF(l_sfgtu), OR32_W_FLAG, it_compare }, { "l.sfgeui", "rA,I", "10 0xF 00011 AAAAA IIII IIII IIII IIII", EF(l_sfgeu), OR32_W_FLAG, it_compare }, { "l.sfltui", "rA,I", "10 0xF 00100 AAAAA IIII IIII IIII IIII", EF(l_sfltu), OR32_W_FLAG, it_compare }, { "l.sfleui", "rA,I", "10 0xF 00101 AAAAA IIII IIII IIII IIII", EF(l_sfleu), OR32_W_FLAG, it_compare }, { "l.sfgtsi", "rA,I", "10 0xF 01010 AAAAA IIII IIII IIII IIII", EF(l_sfgts), OR32_W_FLAG, it_compare }, { "l.sfgesi", "rA,I", "10 0xF 01011 AAAAA IIII IIII IIII IIII", EF(l_sfges), OR32_W_FLAG, it_compare }, { "l.sfltsi", "rA,I", "10 0xF 01100 AAAAA IIII IIII IIII IIII", EF(l_sflts), OR32_W_FLAG, it_compare }, { "l.sflesi", "rA,I", "10 0xF 01101 AAAAA IIII IIII IIII IIII", EF(l_sfles), OR32_W_FLAG, it_compare }, { "l.mtspr", "rA,rB,K", "11 0x0 KKKKK AAAAA BBBB BKKK KKKK KKKK", EF(l_mtspr), 0, it_move }, { "l.mac", "rA,rB", "11 0x1 ----- AAAAA BBBB B--- ---- 0x1", EF(l_mac), 0, it_mac }, { "l.msb", "rA,rB", "11 0x1 ----- AAAAA BBBB B--- ---- 0x2", EF(l_msb), 0, it_mac }, { "lf.add.s", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x0 0x0", EF(lf_add_s), 0, it_float }, { "lf.sub.s", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x0 0x1", EF(lf_sub_s), 0, it_float }, { "lf.mul.s", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x0 0x2", EF(lf_mul_s), 0, it_float }, { "lf.div.s", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x0 0x3", EF(lf_div_s), 0, it_float }, { "lf.itof.s", "rD,rA", "11 0x2 DDDDD AAAAA 0000 0--- 0x0 0x4", EF(lf_itof_s), 0, it_float }, { "lf.ftoi.s", "rD,rA", "11 0x2 DDDDD AAAAA 0000 0--- 0x0 0x5", EF(lf_ftoi_s), 0, it_float }, { "lf.rem.s", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x0 0x6", EF(lf_rem_s), 0, it_float }, { "lf.madd.s", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x0 0x7", EF(lf_madd_s), 0, it_float }, { "lf.sfeq.s", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x0 0x8", EF(lf_sfeq_s), 0, it_float }, { "lf.sfne.s", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x0 0x9", EF(lf_sfne_s), 0, it_float }, { "lf.sfgt.s", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x0 0xA", EF(lf_sfgt_s), 0, it_float }, { "lf.sfge.s", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x0 0xB", EF(lf_sfge_s), 0, it_float }, { "lf.sflt.s", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x0 0xC", EF(lf_sflt_s), 0, it_float }, { "lf.sfle.s", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x0 0xD", EF(lf_sfle_s), 0, it_float }, { "lf.cust1.s", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0xD ----", EFI, 0, it_float }, { "lf.add.d", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0, it_float }, { "lf.sub.d", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0, it_float }, { "lf.mul.d", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0, it_float }, { "lf.div.d", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0, it_float }, { "lf.itof.d", "rD,rA", "11 0x2 DDDDD AAAAA 0000 0--- 0x1 0x4", EFI, 0, it_float }, { "lf.ftoi.d", "rD,rA", "11 0x2 DDDDD AAAAA 0000 0--- 0x1 0x5", EFI, 0, it_float }, { "lf.rem.d", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0, it_float }, { "lf.madd.d", "rD,rA,rB", "11 0x2 DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0, it_float }, { "lf.sfeq.d", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x1 0x8", EFI, 0, it_float }, { "lf.sfne.d", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x1 0x9", EFI, 0, it_float }, { "lf.sfgt.d", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x1 0xA", EFI, 0, it_float }, { "lf.sfge.d", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x1 0xB", EFI, 0, it_float }, { "lf.sflt.d", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x1 0xC", EFI, 0, it_float }, { "lf.sfle.d", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0x1 0xD", EFI, 0, it_float }, { "lf.cust1.d", "rA,rB", "11 0x2 ----- AAAAA BBBB B--- 0xE ----", EFI, 0, it_float }, { "l.sd", "I(rD),rB", "11 0x4 IIIII DDDDD BBBB BIII IIII IIII", EFI, 0, it_store }, { "l.sw", "I(rD),rB", "11 0x5 IIIII DDDDD BBBB BIII IIII IIII", EF(l_sw), 0, it_store }, { "l.sb", "I(rD),rB", "11 0x6 IIIII DDDDD BBBB BIII IIII IIII", EF(l_sb), 0, it_store }, { "l.sh", "I(rD),rB", "11 0x7 IIIII DDDDD BBBB BIII IIII IIII", EF(l_sh), 0, it_store }, { "l.add", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x0", EF(l_add), OR32_W_FLAG, it_arith }, { "l.addc", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x1", EF(l_addc), OR32_W_FLAG, it_arith }, { "l.sub", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x2", EF(l_sub), 0, it_arith }, { "l.and", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x3", EF(l_and), OR32_W_FLAG, it_arith }, { "l.or", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x4", EF(l_or), 0, it_arith }, { "l.xor", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x5", EF(l_xor), 0, it_arith }, { "l.mul", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0x6", EF(l_mul), 0, it_arith }, { "l.sll", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 00-- 0x8", EF(l_sll), 0, it_shift }, { "l.srl", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 01-- 0x8", EF(l_srl), 0, it_shift }, { "l.sra", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 10-- 0x8", EF(l_sra), 0, it_shift }, { "l.ror", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 11-- 0x8", EFI, 0, it_shift }, { "l.div", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0x9", EF(l_div), 0, it_arith }, { "l.divu", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0xA", EF(l_divu), 0, it_arith }, { "l.mulu", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0xB", EFI, 0, it_arith }, { "l.extbs", "rD,rA", "11 0x8 DDDDD AAAAA ---- --00 01-- 0xC", EF(l_extbs), 0, it_move }, { "l.exths", "rD,rA", "11 0x8 DDDDD AAAAA ---- --00 00-- 0xC", EF(l_exths), 0, it_move }, { "l.extws", "rD,rA", "11 0x8 DDDDD AAAAA ---- --00 00-- 0xD", EF(l_extws), 0, it_move }, { "l.extbz", "rD,rA", "11 0x8 DDDDD AAAAA ---- --00 11-- 0xC", EF(l_extbz), 0, it_move }, { "l.exthz", "rD,rA", "11 0x8 DDDDD AAAAA ---- --00 10-- 0xC", EF(l_exthz), 0, it_move }, { "l.extwz", "rD,rA", "11 0x8 DDDDD AAAAA ---- --00 01-- 0xD", EF(l_extwz), 0, it_move }, { "l.cmov", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0xE", EF(l_cmov), OR32_R_FLAG, it_move }, { "l.ff1", "rD,rA", "11 0x8 DDDDD AAAAA ---- --00 ---- 0xF", EF(l_ff1), 0, it_arith }, { "l.fl1", "rD,rA", "11 0x8 DDDDD AAAAA ---- --01 ---- 0xF", EFI, 0, it_arith }, { "l.sfeq", "rA,rB", "11 0x9 00000 AAAAA BBBB B--- ---- ----", EF(l_sfeq), OR32_W_FLAG, it_compare }, { "l.sfne", "rA,rB", "11 0x9 00001 AAAAA BBBB B--- ---- ----", EF(l_sfne), OR32_W_FLAG, it_compare }, { "l.sfgtu", "rA,rB", "11 0x9 00010 AAAAA BBBB B--- ---- ----", EF(l_sfgtu), OR32_W_FLAG, it_compare }, { "l.sfgeu", "rA,rB", "11 0x9 00011 AAAAA BBBB B--- ---- ----", EF(l_sfgeu), OR32_W_FLAG, it_compare }, { "l.sfltu", "rA,rB", "11 0x9 00100 AAAAA BBBB B--- ---- ----", EF(l_sfltu), OR32_W_FLAG, it_compare }, { "l.sfleu", "rA,rB", "11 0x9 00101 AAAAA BBBB B--- ---- ----", EF(l_sfleu), OR32_W_FLAG, it_compare }, { "l.sfgts", "rA,rB", "11 0x9 01010 AAAAA BBBB B--- ---- ----", EF(l_sfgts), OR32_W_FLAG, it_compare }, { "l.sfges", "rA,rB", "11 0x9 01011 AAAAA BBBB B--- ---- ----", EF(l_sfges), OR32_W_FLAG, it_compare }, { "l.sflts", "rA,rB", "11 0x9 01100 AAAAA BBBB B--- ---- ----", EF(l_sflts), OR32_W_FLAG, it_compare }, { "l.sfles", "rA,rB", "11 0x9 01101 AAAAA BBBB B--- ---- ----", EF(l_sfles), OR32_W_FLAG, it_compare }, { "l.cust5", "rD,rA,rB,L,K","11 0xC DDDDD AAAAA BBBB BLLL LLLK KKKK", EFI, 0, it_unknown }, { "l.cust6", "", "11 0xD ----- ----- ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust7", "", "11 0xE ----- ----- ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust8", "", "11 0xF ----- ----- ---- ---- ---- ----", EFI, 0, it_unknown }, /* This section should not be defined in or1ksim, since it contains duplicates, which would cause machine builder to complain. */ #ifdef HAS_CUST { "l.cust5_1", "rD", "11 0xC DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust5_2", "rD,rA" , "11 0xC DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust5_3", "rD,rA,rB", "11 0xC DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown }, { "l.cust6_1", "rD", "11 0xD DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust6_2", "rD,rA" , "11 0xD DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust6_3", "rD,rA,rB", "11 0xD DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown }, { "l.cust7_1", "rD", "11 0xE DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust7_2", "rD,rA" , "11 0xE DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust7_3", "rD,rA,rB", "11 0xE DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown }, { "l.cust8_1", "rD", "11 0xF DDDDD ----- ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust8_2", "rD,rA" , "11 0xF DDDDD AAAAA ---- ---- ---- ----", EFI, 0, it_unknown }, { "l.cust8_3", "rD,rA,rB", "11 0xF DDDDD AAAAA BBBB B--- ---- ----", EFI, 0, it_unknown }, #endif /* Dummy entry, not included in num_opcodes. This lets code examine entry i+1 without checking if we've run off the end of the table. */ { "", "", "", EFI, 0, 0 } }; #undef EFI #undef EFN #undef EF /* Define dummy, if debug is not defined. */ #ifndef HAS_DEBUG #define debug(l, fmt...) ; #endif const unsigned int or32_num_opcodes = ((sizeof(or32_opcodes)) / (sizeof(struct or32_opcode))) - 1; /* Calculates instruction length in bytes. Always 4 for OR32. */ int insn_len (int insn_index ATTRIBUTE_UNUSED) { insn_index = 0; /* Just to get rid that warning. */ return 4; } /* Is individual insn's operand signed or unsigned? */ int letter_signed (char l) { const struct or32_letter *pletter; for (pletter = or32_letters; pletter->letter != '\0'; pletter++) if (pletter->letter == l) return pletter->sign; printf ("letter_signed(%c): Unknown letter.\n", l); return 0; } /* Simple cache for letter ranges */ static int range_cache[256] = {0}; /* Number of letters in the individual lettered operand. */ int letter_range (char l) { const struct or32_opcode *pinsn; char *enc; int range = 0; /* Is value cached? */ if ((range = range_cache[(unsigned char)l])) return range; for (pinsn = or32_opcodes; strlen (pinsn->name); pinsn ++) { if (strchr (pinsn->encoding,l)) { for (enc = pinsn->encoding; *enc != '\0'; enc ++) if ((*enc == '0') && (*(enc + 1) == 'x')) enc += 2; else if (*enc == l) range++; return range_cache[(unsigned char)l] = range; } } printf ("\nABORT: letter_range(%c): Never used letter.\n", l); exit (1); } /* MM: Returns index of given instruction name. */ int insn_index (char *insn) { unsigned int i; int found = -1; for (i = 0; i < or32_num_opcodes; i++) if (!strcmp (or32_opcodes[i].name, insn)) { found = i; break; } return found; } const char * insn_name (int index) { if (index >= 0 && index < (int) or32_num_opcodes) return or32_opcodes[index].name; else return "???"; } #if defined(HAS_EXECUTION) && SIMPLE_EXECUTION void l_none(struct iqueue_entry *current) { } #elif defined(HAS_EXECUTION) && DYNAMIC_EXECUTION void l_none(struct op_queue *opq, int *param_t, orreg_t *param, int delay_slot) { } #else void l_none (void) { } #endif /* Finite automata for instruction decoding building code. */ /* Find simbols in encoding. */ unsigned long insn_extract (char param_ch, char *enc_initial) { char *enc; unsigned long ret = 0; unsigned opc_pos = 32; for (enc = enc_initial; *enc != '\0'; ) if ((*enc == '0') && (*(enc + 1) == 'x')) { unsigned long tmp = strtol (enc+2, NULL, 16); opc_pos -= 4; if (param_ch == '0' || param_ch == '1') { if (param_ch == '0') tmp = 15 - tmp; ret |= tmp << opc_pos; } enc += 3; } else { //if (*enc == '0' || *enc == '1' || *enc == '-' || ISALPHA (*enc)) if (*enc == '0' || *enc == '1' || *enc == '-' || isalpha (*enc)) { opc_pos--; if (param_ch == *enc) ret |= 1 << opc_pos; } enc++; } return ret; } #define MAX_AUTOMATA_SIZE 1200 #define MAX_OP_TABLE_SIZE 1200 #define MAX_LEN 8 #ifndef MIN #define MIN(x, y) ((x) < (y) ? (x) : (y)) #endif unsigned long *automata; int nuncovered; int curpass = 0; /* MM: Struct that hold runtime build information about instructions. */ struct temp_insn_struct *ti; struct insn_op_struct *op_data, **op_start; /* Recursive utility function used to find best match and to build automata. */ static unsigned long * cover_insn (unsigned long * cur, int pass, unsigned int mask) { int best_first = 0, last_match = -1, ninstr = 0; unsigned int best_len = 0; unsigned int i; unsigned long cur_mask = mask; unsigned long *next; for (i = 0; i < or32_num_opcodes; i++) if (ti[i].in_pass == pass) { cur_mask &= ti[i].insn_mask; ninstr++; last_match = i; } debug (8, "%08X %08lX\n", mask, cur_mask); if (ninstr == 0) return 0; if (ninstr == 1) { /* Leaf holds instruction index. */ debug (8, "%li>I%i %s\n", (long)(cur - automata), last_match, or32_opcodes[last_match].name); *cur = LEAF_FLAG | last_match; cur++; nuncovered--; } else { /* Find longest match. */ for (i = 0; i < 32; i++) { unsigned int len; for (len = best_len + 1; len < MIN (MAX_LEN, 33 - i); len++) { unsigned long m = (1UL << ((unsigned long) len)) - 1; debug (9, " (%i(%08lX & %08lX>>%i = %08lX, %08lX)", len,m, cur_mask, i, (cur_mask >> (unsigned)i), (cur_mask >> (unsigned) i) & m); if ((m & (cur_mask >> (unsigned) i)) == m) { best_len = len; best_first = i; debug (9, "!"); } else break; } } debug (9, "\n"); if (!best_len) { fprintf (stderr, "%i instructions match mask 0x%08X:\n", ninstr, mask); for (i = 0; i < or32_num_opcodes; i++) if (ti[i].in_pass == pass) fprintf (stderr, "%s ", or32_opcodes[i].name); fprintf (stderr, "\n"); exit (1); } debug (8, "%li> #### %i << %i (%i) ####\n", (long)(cur - automata), best_len, best_first, ninstr); *cur = best_first; cur++; *cur = (1 << best_len) - 1; cur++; next = cur; /* Allocate space for pointers. */ cur += 1 << best_len; cur_mask = (1 << (unsigned long) best_len) - 1; for (i = 0; i < ((unsigned) 1 << best_len); i++) { unsigned int j; unsigned long *c; curpass++; for (j = 0; j < or32_num_opcodes; j++) if (ti[j].in_pass == pass && ((ti[j].insn >> best_first) & cur_mask) == (unsigned long) i && ((ti[j].insn_mask >> best_first) & cur_mask) == cur_mask) ti[j].in_pass = curpass; debug (9, "%08X %08lX %i\n", mask, cur_mask, best_first); c = cover_insn (cur, curpass, mask & (~(cur_mask << best_first))); if (c) { debug (8, "%li> #%X -> %lu\n", (long)(next - automata), i, (long)(cur - automata)); *next = cur - automata; cur = c; } else { debug (8, "%li> N/A\n", (long)(next - automata)); *next = 0; } next++; } } return cur; } /* Returns number of nonzero bits. */ static int num_ones (unsigned long value) { int c = 0; while (value) { if (value & 1) c++; value >>= 1; } return c; } /* Utility function, which converts parameters from or32_opcode format to more binary form. Parameters are stored in ti struct. */ static struct insn_op_struct * parse_params (const struct or32_opcode * opcode, struct insn_op_struct * cur) { char *args = opcode->args; int i, type; int num_cur_op = 0; i = 0; type = 0; /* In case we don't have any parameters, we add dummy read from r0. */ if (!(*args)) { cur->type = OPTYPE_REG | OPTYPE_OP | OPTYPE_LAST; cur->data = 0; debug (9, "#%08lX %08lX\n", cur->type, cur->data); cur++; return cur; } while (*args != '\0') { if (*args == 'r') { args++; type |= OPTYPE_REG; if (*args == 'D') type |= OPTYPE_DST; } //else if (ISALPHA (*args)) else if (isalpha (*args)) { unsigned long arg; arg = insn_extract (*args, opcode->encoding); debug (9, "%s : %08lX ------\n", opcode->name, arg); if (letter_signed (*args)) { type |= OPTYPE_SIG; type |= ((num_ones (arg) - 1) << OPTYPE_SBIT_SHR) & OPTYPE_SBIT; } num_cur_op = 0; /* Split argument to sequences of consecutive ones. */ while (arg) { int shr = 0; unsigned long tmp = arg, mask = 0; while ((tmp & 1) == 0) { shr++; tmp >>= 1; } while (tmp & 1) { mask++; tmp >>= 1; } cur->type = type | shr; cur->data = mask; arg &= ~(((1 << mask) - 1) << shr); debug (6, "|%08lX %08lX\n", cur->type, cur->data); cur++; num_cur_op++; } args++; } else if (*args == '(') { /* Next param is displacement. Later we will treat them as one operand. */ /* Set the OPTYPE_DIS flag on all insn_op_structs that belong to this * operand */ while(num_cur_op > 0) { cur[-num_cur_op].type |= type | OPTYPE_DIS; num_cur_op--; } cur[-1].type |= OPTYPE_OP; debug(9, ">%08X %08X\n", cur->type, cur->data); type = 0; i++; args++; } else if (*args == OPERAND_DELIM) { cur--; cur->type = type | cur->type | OPTYPE_OP; debug (9, ">%08lX %08lX\n", cur->type, cur->data); cur++; type = 0; i++; args++; } else if (*args == '0') { cur->type = type; cur->data = 0; debug (9, ">%08lX %08lX\n", cur->type, cur->data); cur++; type = 0; i++; args++; } else if (*args == ')') args++; else { fprintf (stderr, "%s : parse error in args.\n", opcode->name); exit (1); } } cur--; cur->type = type | cur->type | OPTYPE_OP | OPTYPE_LAST; debug (9, "#%08lX %08lX\n", cur->type, cur->data); cur++; return cur; } /* Constructs new automata based on or32_opcodes array. */ void build_automata (void) { unsigned int i; unsigned long *end; struct insn_op_struct *cur; automata = malloc (MAX_AUTOMATA_SIZE * sizeof (unsigned long)); ti = malloc (sizeof (struct temp_insn_struct) * or32_num_opcodes); nuncovered = or32_num_opcodes; printf ("Building automata... "); /* Build temporary information about instructions. */ for (i = 0; i < or32_num_opcodes; i++) { unsigned long ones, zeros; char *encoding = or32_opcodes[i].encoding; ones = insn_extract('1', encoding); zeros = insn_extract('0', encoding); ti[i].insn_mask = ones | zeros; ti[i].insn = ones; ti[i].in_pass = curpass = 0; /*debug(9, "%s: %s %08X %08X\n", or32_opcodes[i].name, or32_opcodes[i].encoding, ti[i].insn_mask, ti[i].insn);*/ } /* Until all are covered search for best criteria to separate them. */ end = cover_insn (automata, curpass, 0xFFFFFFFF); if (end - automata > MAX_AUTOMATA_SIZE) { fprintf (stderr, "Automata too large. Increase MAX_AUTOMATA_SIZE."); exit (1); } printf ("done, num uncovered: %i/%i.\n", nuncovered, or32_num_opcodes); printf ("Parsing operands data... "); op_data = malloc (MAX_OP_TABLE_SIZE * sizeof (struct insn_op_struct)); op_start = malloc (or32_num_opcodes * sizeof (struct insn_op_struct *)); cur = op_data; for (i = 0; i < or32_num_opcodes; i++) { op_start[i] = cur; cur = parse_params (&or32_opcodes[i], cur); if (cur - op_data > MAX_OP_TABLE_SIZE) { fprintf (stderr, "Operands table too small, increase MAX_OP_TABLE_SIZE.\n"); exit (1); } } printf ("done.\n"); } void destruct_automata (void) { free (ti); free (automata); free (op_data); free (op_start); } /* Decodes instruction and returns instruction index. */ int insn_decode (unsigned int insn) { unsigned long *a = automata; int i; while (!(*a & LEAF_FLAG)) { unsigned int first = *a; debug (9, "%li ", (long)(a - automata)); a++; i = (insn >> first) & *a; a++; if (!*(a + i)) { /* Invalid instruction found? */ debug (9, "XXX\n"); return -1; } a = automata + *(a + i); } i = *a & ~LEAF_FLAG; debug (9, "%i\n", i); /* Final check - do we have direct match? (based on or32_opcodes this should be the only possibility, but in case of invalid/missing instruction we must perform a check) */ if ((ti[i].insn_mask & insn) == ti[i].insn) return i; else return -1; } static char disassembled_str[50]; char *disassembled = &disassembled_str[0]; /* Automagically does zero- or sign- extension and also finds correct sign bit position if sign extension is correct extension. Which extension is proper is figured out from letter description. */ unsigned long extend_imm (unsigned long imm, char l) { unsigned long mask; int letter_bits; /* First truncate all bits above valid range for this letter in case it is zero extend. */ letter_bits = letter_range (l); mask = (1 << letter_bits) - 1; imm &= mask; /* Do sign extend if this is the right one. */ if (letter_signed(l) && (imm >> (letter_bits - 1))) imm |= (~mask); return imm; } static unsigned long or32_extract (char param_ch, char *enc_initial, unsigned long insn) { char *enc; unsigned long ret = 0; int opc_pos = 0; int param_pos = 0; for (enc = enc_initial; *enc != '\0'; enc++) if (*enc == param_ch) { if (enc - 2 >= enc_initial && (*(enc - 2) == '0') && (*(enc - 1) == 'x')) continue; else param_pos++; } #if DEBUG printf ("or32_extract: %x ", param_pos); #endif opc_pos = 32; for (enc = enc_initial; *enc != '\0'; ) if ((*enc == '0') && (*(enc + 1) == 'x')) { opc_pos -= 4; if ((param_ch == '0') || (param_ch == '1')) { unsigned long tmp = strtol (enc, NULL, 16); #if DEBUG printf (" enc=%s, tmp=%x ", enc, tmp); #endif if (param_ch == '0') tmp = 15 - tmp; ret |= tmp << opc_pos; } enc += 3; } else if ((*enc == '0') || (*enc == '1')) { opc_pos--; if (param_ch == *enc) ret |= 1 << opc_pos; enc++; } else if (*enc == param_ch) { opc_pos--; param_pos--; #if DEBUG printf ("\n ret=%x opc_pos=%x, param_pos=%x\n", ret, opc_pos, param_pos); #endif //if (ISLOWER (param_ch)) if (islower (param_ch)) ret -= ((insn >> opc_pos) & 0x1) << param_pos; else ret += ((insn >> opc_pos) & 0x1) << param_pos; enc++; } //else if (ISALPHA (*enc)) else if (isalpha (*enc)) { opc_pos--; enc++; } else if (*enc == '-') { opc_pos--; enc++; } else enc++; #if DEBUG printf ("ret=%x\n", ret); #endif return ret; } /* Print register. Used only by print_insn. */ static char * or32_print_register (char *dest, char param_ch, char *encoding, unsigned long insn) { int regnum = or32_extract(param_ch, encoding, insn); sprintf (dest, "r%d", regnum); while (*dest) dest++; return dest; } /* Print immediate. Used only by print_insn. */ static char * or32_print_immediate (char *dest, char param_ch, char *encoding, unsigned long insn) { int imm = or32_extract (param_ch, encoding, insn); imm = extend_imm (imm, param_ch); if (letter_signed (param_ch)) { if (imm < 0) sprintf (dest, "%d", imm); else sprintf (dest, "0x%x", imm); } else sprintf (dest, "%#x", imm); while (*dest) dest++; return dest; } /* Disassemble one instruction from insn index. Return the size of the instruction. */ int disassemble_index (insn, index) unsigned long insn; int index; { char *dest = disassembled; if (index >= 0) { struct or32_opcode const *opcode = &or32_opcodes[index]; char *s; strcpy (dest, opcode->name); while (*dest) dest++; *dest++ = ' '; *dest = 0; for (s = opcode->args; *s != '\0'; ++s) { switch (*s) { case '\0': return insn_len (insn); case 'r': dest = or32_print_register(dest, *++s, opcode->encoding, insn); break; default: if (strchr (opcode->encoding, *s)) dest = or32_print_immediate (dest, *s, opcode->encoding, insn); else { *dest++ = *s; *dest = 0; } } } } else { /* This used to be %8x for binutils. */ sprintf(dest, ".word 0x%08lx", insn); while (*dest) dest++; } return insn_len (insn); } /* Disassemble one instruction from insn to disassemble. Return the size of the instruction. */ int disassemble_insn (unsigned long insn) { return disassemble_index (insn, insn_decode (insn)); }
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