OpenXM_contrib2/asir2000/gc/mach_dep.c - diff

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Diff for /OpenXM_contrib2/asir2000/gc/mach_dep.c between version 1.5 and 1.6

version 1.5, 2002/07/24 07:46:19

version 1.6, 2002/07/24 08:00:10

Line 81 void GC_push_regs()

# endif

# if defined(MIPS) && defined(LINUX)

/* I'm not sure whether this has actually been tested. */

# define call_push(x) asm("move $4," x ";"); asm("jal GC_push_one")

call_push("$2");

call_push("$3");

call_push("$16");

call_push("$17");

call_push("$18");

call_push("$19");

call_push("$20");

call_push("$21");

call_push("$22");

call_push("$23");

call_push("$30");

# undef call_push

# endif /* MIPS && LINUX */

# ifdef VAX

/* VAX - generic code below does not work under 4.2 */

/* r1 through r5 are caller save, and therefore */

Line 228 void GC_push_regs()

Line 211 void GC_push_regs()

&& !(defined(NETBSD) && defined(__ELF__)) \

&& !(defined(OPENBSD) && defined(__ELF__)) \

&& !(defined(BEOS) && defined(__ELF__)) \

&& !defined(DOS4GW)

&& !defined(DOS4GW) && !defined(HURD)

/* I386 code, generic code does not appear to work */

/* It does appear to work under OS2, and asms dont */

/* This is used for some 38g UNIX variants and for CYGWIN32 */

Line 244 void GC_push_regs()

Line 227 void GC_push_regs()

# if ( defined(I386) && defined(LINUX) && defined(__ELF__) ) \

|| ( defined(I386) && defined(FREEBSD) && defined(__ELF__) ) \

|| ( defined(I386) && defined(NETBSD) && defined(__ELF__) ) \

|| ( defined(I386) && defined(OPENBSD) && defined(__ELF__) )

|| ( defined(I386) && defined(OPENBSD) && defined(__ELF__) ) \

|| ( defined(I386) && defined(HURD) && defined(__ELF__) ) \

|| ( defined(I386) && defined(DGUX) )

/* This is modified for Linux with ELF (Note: _ELF_ only) */

/* This section handles FreeBSD with ELF. */

Line 391 void GC_push_regs()

Line 376 void GC_push_regs()

# endif

/* other machines... */

# if !(defined M68K) && !(defined VAX) && !(defined RT)

# if !defined(M68K) && !defined(VAX) && !defined(RT)

# if !(defined SPARC) && !(defined I386) && !(defined NS32K)

# if !defined(SPARC) && !defined(I386) && !defined(NS32K)

# if !defined(POWERPC) && !defined(UTS4)

# if !defined(PJ) && !(defined(MIPS) && defined(LINUX))

--> bad news <--

Line 407 void GC_push_regs()

Line 392 void GC_push_regs()

void GC_generic_push_regs(cold_gc_frame)

ptr_t cold_gc_frame;

{

/* Generic code */

/* The idea is due to Parag Patel at HP. */

/* We're not sure whether he would like */

/* to be he acknowledged for it or not. */

{

static jmp_buf regs;

# ifdef HAVE_BUILTIN_UNWIND_INIT

/* This was suggested by Richard Henderson as the way to */

/* force callee-save registers and register windows onto */

/* the stack. */

__builtin_unwind_init();

# else /* !HAVE_BUILTIN_UNWIND_INIT */

/* Generic code */

/* The idea is due to Parag Patel at HP. */

/* We're not sure whether he would like */

/* to be he acknowledged for it or not. */

jmp_buf regs;

/* Setjmp on Sun 3s doesn't clear all of the buffer. */

/* Setjmp doesn't always clear all of the buffer. */

/* That tends to preserve garbage. Clear it. */

for (; (char *)i < lim; i++) {

*i = 0;

}

# if defined(POWERPC) || defined(MSWIN32) || defined(MSWINCE) \

|| defined(UTS4) || defined(LINUX)

|| defined(UTS4) || defined(LINUX) || defined(EWS4800)

(void) setjmp(regs);

# else

(void) _setjmp(regs);

# endif

# if defined(SPARC) || defined(IA64)

# endif /* !HAVE_BUILTIN_UNWIND_INIT */

# if (defined(SPARC) && !defined(HAVE_BUILTIN_UNWIND_INIT)) \

|| defined(IA64)

/* On a register window machine, we need to save register */

/* contents on the stack for this to work. The setjmp */

/* is probably not needed on SPARC, since pointers are */

Line 438 ptr_t cold_gc_frame;

Line 431 ptr_t cold_gc_frame;

word GC_save_regs_in_stack();

GC_save_regs_ret_val = GC_save_regs_in_stack();

/* On IA64 gcc, could use __builtin_ia64_flushrs() and */

/* __builtin_ia64_flushrs(). The latter will be done */

/* implicitly by __builtin_unwind_init() for gcc3.0.1 */

/* and later. */

}

# endif

GC_push_current_stack(cold_gc_frame);

Line 479 ptr_t cold_gc_frame;

Line 476 ptr_t cold_gc_frame;

/* On IA64, we also need to flush register windows. But they end */

/* up on the other side of the stack segment. */

/* Returns the backing store pointer for the register stack. */

# ifdef IA64

/* We now implement this as a separate assembly file, since inline */

# ifdef __GNUC__

/* assembly code here doesn't work with either the Intel or HP */

/* compilers. */

# if 0

# ifdef LINUX

asm(" .text");

asm(" .psr abi64");

asm(" .psr lsb");

Line 497 ptr_t cold_gc_frame;

asm(" mov r8=ar.bsp");

asm(" br.ret.sptk.few rp");

asm(" .endp GC_save_regs_in_stack");

# else

# endif /* LINUX */

void GC_save_regs_in_stack() {

# if 0 /* Other alternatives that don't work on HP/UX */

asm(" flushrs");

word GC_save_regs_in_stack() {

asm(" ;;");

# if USE_BUILTINS

asm(" mov r8=ar.bsp");

__builtin_ia64_flushrs();

asm(" br.ret.sptk.few rp");

return __builtin_ia64_bsp();

# else

# ifdef HPUX

_asm(" flushrs");

_asm(" ;;");

_asm(" mov r8=ar.bsp");

_asm(" br.ret.sptk.few rp");

# else

asm(" flushrs");

asm(" ;;");

asm(" mov r8=ar.bsp");

asm(" br.ret.sptk.few rp");

# endif

}

# endif

Line 511 ptr_t cold_gc_frame;

Line 524 ptr_t cold_gc_frame;

/* returns arg. Stack clearing is crucial on SPARC, so we supply */

/* an assembly version that's more careful. Assumes limit is hotter */

/* than sp, and limit is 8 byte aligned. */

#if defined(ASM_CLEAR_CODE) && !defined(THREADS)

#if defined(ASM_CLEAR_CODE)

#ifndef SPARC

--> fix it

#endif

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