Subversion Repositories scarts

2010-02-19  Martin Walter <mwalter@opencores.org>

        * t-scarts16: migrated libgcc2 functions:
                div.c, divdi.c, fixfloat.c, moddi.c, muldi.c, udivdi.c, umoddi.c

2010-02-17  Martin Walter <mwalter@opencores.org>

        * scarts16.h: removed stabs debugging format
        * scarts16.h: added DWARF 2 debugging format
        * scarts16.c: implemented DWARF 2 debugging format

2009-07-16  Martin Walter <mwalter@opencores.org>

        * scarts16.h: added builtin definition "__SCARTS16__"
        * scarts16.h: prepended section names with ".section"
        * scarts16.h: changed ASM_DECLARE_FUNCTION_NAME to produce more
                ELF-ish assembler code (added .global and .type)
        * scarts16.h: added ASM_DECLARE_FUNCTION_SIZE
        * scarts16.h: defined GLOBAL_ASM_OP; its absence rendered all
                symbols local in the object file
        * scarts16.h: changed .align to .p2align in ASM_OUTPUT_ALIGN
                for the sake of clearness
        * scarts16.h: added "-lnosys" to LIB_SPEC; libnosys.a is newlib's
                syscall interface for SCARTS and needed by libc.a
        * scarts16.h: removed ENDFILE_SPEC, since all crtend0.o contained
                is now handled by linker scripts
        * scarts16.c: removed CPP-macros and C-style comments to produce
                assembly code that does not require CPP-ing
        * scarts16.c: replaced TARGET_ASM_INTEGER by proper definitions of
                TARGET_ASM_(BYTE|HI|SI|DI)_OP (both aligned and unaligned)
        * scarts16.c: fixed bug: integer comparisons against const char *
                scarts16_codesize and scarts16_datasize were relaced with
                their long integer interpretations
        * scarts16.c: changed feasible distance for branches from [-512; 511]
                to [-256; 511] since this is the maximum range that the GNU
                assembler can store in the 10-bit signed immediate of jmpi*
                instructions

2009-06-02  Martin Walter <mwalter@opencores.org>

        * config.gcc: added GNU as/ld and newlib specific options

2007-08-22  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts16.c (scarts16_output_function_prologue): fixed handling for
        interrupt functions
        (scarts16_output_function_epilogue): same here

2007-08-15  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts16.h: forked 16-bit version from 32-bit version

        * scarts16.c: same here

        * scarts16.md: same here

########################################################################
#       release "Zen Arcade"                                           #
########################################################################

2005-11-18  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md ("modqi3", "umodqi3"): added these patterns again, as
        the library functions were fixed.

########################################################################
#       release "Metal Circus"                                         #
########################################################################
        
2005-09-29  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_output_function_prologue): redesigned prologues
        for signals and interrupts, now pre-decrement stack pointer so we
        are safe in case of interrupts
        (scarts_output_function_epilogue): likewise

        * scarts.md ("mulsi3", "divsi3", "udivsi3"): changed patterns so
        that stack pointer is incremented/decremented and we are safe in
        case of interrupts

2005-08-11  Wolfgang Puffitsch  <Wolfgang@THINKPAD>

        * scarts.c: removed a few unnecessary add's when loading from
        memory with a small offset

2005-08-06  Wolfgang Puffitsch  <Wolfgang@THINKPAD>

        * scarts.c (frame_pointer_required_p): fixed a bug with args passed
        in memory

2005-07-31  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts-run.c (execute): fixed a little bug with overflows in
        stofX and ldofX.

        * scarts.c (frame_pointer_required_p): relaxed the requirements for
        the framepointer
        (initial_elimination_offset): adapted to new version of
        frame_pointer_required_p

2005-06-30  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (legitimate_address_p): fixed behaviour for registers
        when being strict

2005-06-28  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.h (RETURN_ADDR_RTX): fixed this macro

2005-03-29  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md ("lshrsi1"): fixed bug that caused logical shifts to be
        done as arithmetic shifts for SImode values

2005-03-14  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (frame_pointer_required_p): now returning that frame
        pointer is always needed

2005-02-25  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: commented out modXX patterns, because the library
        functions are broken

2005-02-24  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.h (FUNCTION_PROFILER): added newline to output 

        * scarts.c (scarts_unique_section): changed this function to avoid
        internal errors

2005-02-23  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_function_value): now returning BLKmode value
        always in memory which is less efficient but on the safe side
        regarding bugs in the compiler

        * scarts.h (ASM_OUTPUT_LABELREF): added this macro so a label
        called "data" cannot collide with the mnemonic of the same name
        (STACK_POINTER_OFFSET): changed this to fix a bug in the stack
        layout

2005-02-19  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md ("*pushqi"): for some obscure reason the code for this
        insn was complete crap

2005-02-18  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: fixed typo that had caused operands of subtractions to
        be marked commutative

        * scarts.c (scarts_output_function_epilogue): now returning coorect
        value from main()

2005-02-13  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_output_function_epilogue): removed unneccessary
        code that caused "exit" always to be linked

        * scarts.md: fixed a few typos related to the argument for HImode
        shifts

        * scarts.h: same as with scarts.c, linker-specs were changed a so
        that the simplicistic linker can handle it

        * scarts.md: same as with scarts.c

        * scarts.c: changed output a little to make
        linking possible

2005-02-11  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c, scarts.h: modified calling convention and its handling
        to fix a bug that appeared when running in cygwin

2005-02-04  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: fixed an off-by-one error when computing lengths of
        jumps
        ("modhi3_call"): fixed severe typo that caused the libcalls to
        disappear
        
        * scarts.c (print_operand): added alternative for unsigned values
        as they are needed for addresses

        * scarts.md: added SImode division, unsigned division and modulo

2005-02-01  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c: further simplified prologue and epilogue

        * scarts.md: added SImode multiplication

2005-01-31  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_out_movsi): fixed a typo that caused invalid
        offsets to be created. Fixed a bug with loading constant
        addresses. Cleaned up frame-pointer handling in prologue and
        epilogue a bit.

        * scarts.md: added SImode shifts

2005-01-29  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (legitimate_address_p): fixed an error that did not
        reject pseudo-regs when being strict

2005-01-28  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c: introduced scarts_out_movqi, scarts_out_movhi,
        scarts_out_movsi, scarts_out_movhf, scarts_out_movsf
        (notice_update_cc): made this function do something, which seems
        to fix the bug which occurred with optimization

        * scarts.md: removed a number of patterns related to moves (movXX,
        stXX, stofXX, ldXX, ldofXX)

2005-01-13  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: changed patterns for calls

2004-12-23  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c: the handling of the stack now finally should work; some
        cleanup still needed
        
2004-12-11  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: fixed a few typos in SImode and SFmode

        * scarts.c: (scarts_out_branch): fixed a typo and changed signed
        comparisons for lower bytes to unsigned comparisons, which should
        be correct

2004-12-06  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md ("udivqi3", "udivhi3"): added patterns for unsigned
        divisions

        * scarts.c (scarts_out_branch): fixed broken comparisons with HImode
        and SImode

2004-12-04  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c: fixed handling of the stack

2004-12-03  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: added some missing (clobber)s

2004-12-01  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: fixed a bug that could cause library functions not to
        be emitted in certain situations

2004-11-30  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_output_function_prologue): fixed problems with
        interrupts, especially interruptable ones

2004-11-27  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md ("andqi3", "orqi3"): fixed a flaw that did not
        recognize ~0x8000 and 0x8000 correctly.

2004-11-24  Wolfgang Puffitsch  <puffitsch@ecs.tuwien.ac.at>

        * scarts.h: introduced pseudo-section for uninitialized data

2004-11-04  Wolfgang Puffitsch  <puffitsch@unique>

        * scarts.md ("*ldofsi"): fixed a stupid typo

2004-10-26  Wolfgang Puffitsch  <puffitsch@unique>

        * scarts.md: enhanced and/ior-patterns so that bclr and bset are
        engaged when possible

2004-10-23  Wolfgang Puffitsch  <puffitsch@unique>

        * scarts.md: added a peepholes for conditional moves; further
        tuning is still needed so that other operations and full
        if/else-constructions can be matched

        * scarts.c (scarts_jump_mode): now using constants SCARTS_NEAR_JUMP,
        SCARTS_FAR_JUMP and SCARTS_ONE_JUMP for different modes instead of
        plain numbers

2004-10-18  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_output_function_epilogue): corrected opcode for
        returning from an interrupt function
        (scarts_output_function_prologue): removed "sei" for interrupt
        functions, because the opcode does not exist

2004-06-21  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: removed patterns for converting floating point
        numbers, which seems to work now implicitly.

2004-06-20  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.h (CALL_USED_REGISTERS): changed RTE register to be a
        fixed register, as being non-fixed was complete nonsense

        * scarts.md: added useful code for accessing subregs with floating
        point modes

2004-06-18  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c: changed register allocation scheme so that the
        registers are adjacent if not all registers are used

2004-05-19  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_override_options): added means for not using a
        number of registers

        * scarts.h (REG_ALLOC_ORDER): changed register allocation scheme to
        a far superior model.

2004-05-04  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: improved handling of condition flag and a bunch of
        other small things

        * scarts.c: migrated from traditional to ANSI function declarations

        * scarts.h (INIT_TARGET_OPTABS): removed

        * scarts.c (scarts_init_once): moved code to scarts_override_options

        * scarts.h (OBJC_PROLOGUE): removed: poisoned and useless anyway
        (MACHINE_DEPENDENT_REORG): removed: poisoned and useless anyway

        * scarts.c (scarts_rtx_costs): moved (CONST_COSTS) here
        (TARGET_ASM_FILE_START): moved (ASM_FILE_START) here
        (TARGET_ASM_FILE_END):  moved (ASM_FILE_END) here

2004-04-16  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md ("negsi2"): fixed that code which was plain wrong.
        Fixed clobbering with multiplication, division and modulo.

2004-03-19  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_output_function_prologue): starting stack now one
        below, which seems to work better.

        * t-scarts: changed so that compilation and installation run
        smoothly.

2004-03-15  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md ("xorxx3"): changed name from "eorxx3" to "xorxx3",
        because the first cause very bad code to be generated
        (shifts): simplified generation of move-patterns

2004-03-13  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c: fixed problems with the stack

        * scarts.md: got rid of an obscure internal bug introduced by the
        better shift patterns; fixed a few typos.

2004-03-12  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (print_operand): added T, U, V and W to fix loading of
        64-bit constants

        * scarts.md: added better shift-handling for HImode

2004-03-11  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: added code and patterns so that shifts by constants
        are handled better

2004-03-10  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_jump_mode): jumping offset was computed
        inversely, fixed this
        (asm_file_end): added guarding to the include of libgcc.s so it
        works always

2004-03-09  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.c (scarts_out_branch): changed prefix for labels which are
        generated within insns, so that the convention now is the following:
        ".<NUM>" for insn-generated labels, ".L<NUM>" for normal
        generated labels, ".<IDENT>_<NUM>" for labels from static
        variables

        * scarts.md: fixed allowable offsets for loading long and long long
        values
        Fixed a few typos that generated invalid memnonics.

        * scarts.h (BASE_REG_CLASS): after fiddling around to get away the
        "cannot find spill register" error, I changed this to
        GENERAL_REGS, and it seems to work, but further checking has to be
        done

2004-03-08  Wolfgang Puffitsch  <wolfgang@jeunesse.kamikaze>

        * scarts.md: added patterns for moving floating point values (only
        between already floating point items)

        * scarts.h: tweaked costs for moves, so that HFmode is handled now
        too

        * scarts.md: (subxx3) Simplified subxx3 patterns because there is
        no need for supporting constants due to canonicalisation.
        (general) Substituted "nonmemory_operand" with "register_operand"
        in some patterns that really support registers only.