diff options
Diffstat (limited to 'boehm-gc/mach_dep.c')
| -rw-r--r-- | boehm-gc/mach_dep.c | 68 |
1 files changed, 52 insertions, 16 deletions
diff --git a/boehm-gc/mach_dep.c b/boehm-gc/mach_dep.c index 52f86346761..12c3f07603f 100644 --- a/boehm-gc/mach_dep.c +++ b/boehm-gc/mach_dep.c @@ -80,6 +80,24 @@ void GC_push_regs() # ifdef RT register long TMP_SP; /* must be bound to r11 */ # 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 */ @@ -199,10 +217,11 @@ void GC_push_regs() # endif /* __MWERKS__ */ # endif /* MACOS */ -# if defined(I386) &&!defined(OS2) &&!defined(SVR4) &&!defined(MSWIN32) \ +# if defined(I386) &&!defined(OS2) &&!defined(SVR4) \ + && (defined(__MINGW32__) || !defined(MSWIN32)) \ && !defined(SCO) && !defined(SCO_ELF) \ && !(defined(LINUX) && defined(__ELF__)) \ - && !(defined(__FreeBSD__) && defined(__ELF__)) \ + && !(defined(FREEBSD) && defined(__ELF__)) \ && !defined(DOS4GW) /* I386 code, generic code does not appear to work */ /* It does appear to work under OS2, and asms dont */ @@ -217,20 +236,25 @@ void GC_push_regs() # endif # if ( defined(I386) && defined(LINUX) && defined(__ELF__) ) \ - || ( defined(I386) && defined(__FreeBSD__) && defined(__ELF__) ) + || ( defined(I386) && defined(FREEBSD) && defined(__ELF__) ) /* This is modified for Linux with ELF (Note: _ELF_ only) */ /* This section handles FreeBSD with ELF. */ - asm("pushl %eax"); asm("call GC_push_one"); asm("addl $4,%esp"); - asm("pushl %ecx"); asm("call GC_push_one"); asm("addl $4,%esp"); - asm("pushl %edx"); asm("call GC_push_one"); asm("addl $4,%esp"); - asm("pushl %ebp"); asm("call GC_push_one"); asm("addl $4,%esp"); - asm("pushl %esi"); asm("call GC_push_one"); asm("addl $4,%esp"); - asm("pushl %edi"); asm("call GC_push_one"); asm("addl $4,%esp"); - asm("pushl %ebx"); asm("call GC_push_one"); asm("addl $4,%esp"); + /* Eax is caller-save and dead here. Other caller-save */ + /* registers could also be skipped. We assume there are no */ + /* pointers in MMX registers, etc. */ + /* We combine instructions in a single asm to prevent gcc from */ + /* inserting code in the middle. */ + asm("pushl %ecx; call GC_push_one; addl $4,%esp"); + asm("pushl %edx; call GC_push_one; addl $4,%esp"); + asm("pushl %ebp; call GC_push_one; addl $4,%esp"); + asm("pushl %esi; call GC_push_one; addl $4,%esp"); + asm("pushl %edi; call GC_push_one; addl $4,%esp"); + asm("pushl %ebx; call GC_push_one; addl $4,%esp"); # endif -# if defined(I386) && defined(MSWIN32) && !defined(USE_GENERIC) +# if defined(I386) && defined(MSWIN32) && !defined(__MINGW32__) \ + && !defined(USE_GENERIC) /* I386 code, Microsoft variant */ __asm push eax __asm call GC_push_one @@ -274,11 +298,10 @@ void GC_push_regs() asm ("movd r7, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4"); # endif -# if defined(SPARC) || defined(IA64) +# if defined(SPARC) { word GC_save_regs_in_stack(); - /* generic code will not work */ GC_save_regs_ret_val = GC_save_regs_in_stack(); } # endif @@ -351,8 +374,8 @@ void GC_push_regs() /* other machines... */ # if !(defined M68K) && !(defined VAX) && !(defined RT) # if !(defined SPARC) && !(defined I386) && !(defined NS32K) -# if !defined(POWERPC) && !defined(UTS4) && !defined(IA64) -# if !defined(PJ) +# if !defined(POWERPC) && !defined(UTS4) +# if !defined(PJ) && !(defined(MIPS) && defined(LINUX)) --> bad news <-- # endif # endif @@ -379,11 +402,24 @@ ptr_t cold_gc_frame; for (; (char *)i < lim; i++) { *i = 0; } -# if defined(POWERPC) || defined(MSWIN32) || defined(UTS4) +# if defined(POWERPC) || defined(MSWIN32) || defined(UTS4) || defined(LINUX) (void) setjmp(regs); # else (void) _setjmp(regs); # endif +# if defined(SPARC) || 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 */ + /* only stored in windowed or scratch registers. It is */ + /* needed on IA64, since some non-windowed registers are */ + /* preserved. */ + { + word GC_save_regs_in_stack(); + + GC_save_regs_ret_val = GC_save_regs_in_stack(); + } +# endif GC_push_current_stack(cold_gc_frame); } } |