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| author | Bryce McKinlay <bryce@gcc.gnu.org> | 2001-05-21 07:39:23 +0100 |
|---|---|---|
| committer | Bryce McKinlay <bryce@gcc.gnu.org> | 2001-05-21 07:39:23 +0100 |
| commit | f54d42879f9f2e50f38c703064db6e3d6e91a568 (patch) | |
| tree | 74fdbde7939a341e9ef653b68f90004a5beb56a6 /boehm-gc/powerpc_macosx_mach_dep.s | |
| parent | 9d2f2c45d8936179588489a6cb3df61203ed1028 (diff) | |
| download | gcc-f54d42879f9f2e50f38c703064db6e3d6e91a568.tar.gz | |
Initial revision
From-SVN: r42370
Diffstat (limited to 'boehm-gc/powerpc_macosx_mach_dep.s')
| -rw-r--r-- | boehm-gc/powerpc_macosx_mach_dep.s | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/boehm-gc/powerpc_macosx_mach_dep.s b/boehm-gc/powerpc_macosx_mach_dep.s new file mode 100644 index 00000000000..fad41d1c661 --- /dev/null +++ b/boehm-gc/powerpc_macosx_mach_dep.s @@ -0,0 +1,66 @@ + .text + + .set linkageArea,24 + .set params,4 + .set alignment,4 + + .set spaceToSave,linkageArea+params+alignment + .set spaceToSave8,spaceToSave+8 + +; Mark from machine registers that are saved by C compiler + .globl _GC_push_regs +_GC_push_regs: + ; PROLOG + mflr r0 ; get return address + stw r0,8(r1) ; save return address + stwu r1,-spaceToSave(r1) ; skip over caller save area + ; + mr r3,r2 ; mark from r2. Well I'm not really sure + ; that this is necessary or even the right + ; thing to do - at least it doesn't harm... + ; According to Apple's docs it points to + ; the direct data area, whatever that is... + bl _GC_push_one + mr r3,r13 ; mark from r13-r31 + bl _GC_push_one + mr r3,r14 + bl _GC_push_one + mr r3,r15 + bl _GC_push_one + mr r3,r16 + bl _GC_push_one + mr r3,r17 + bl _GC_push_one + mr r3,r18 + bl _GC_push_one + mr r3,r19 + bl _GC_push_one + mr r3,r20 + bl _GC_push_one + mr r3,r21 + bl _GC_push_one + mr r3,r22 + bl _GC_push_one + mr r3,r23 + bl _GC_push_one + mr r3,r24 + bl _GC_push_one + mr r3,r25 + bl _GC_push_one + mr r3,r26 + bl _GC_push_one + mr r3,r27 + bl _GC_push_one + mr r3,r28 + bl _GC_push_one + mr r3,r29 + bl _GC_push_one + mr r3,r30 + bl _GC_push_one + mr r3,r31 + bl _GC_push_one + ; EPILOG + lwz r0,spaceToSave8(r1) ; get return address back + mtlr r0 ; reset link register + addic r1,r1,spaceToSave ; restore stack pointer + blr |