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| author | Kartik Agaram <vc@akkartik.com> | 2020-05-13 00:51:31 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-05-18 00:44:49 -0700 |
| commit | 456b44fbfb6003195aceef8ed41f194cd2e27b80 (patch) | |
| tree | 9044af8f1e58c4fb601d397606b85906f4fb4994 /069allocate.subx | |
| parent | e5118fa9fb6b1925f785f810767ca642097622d3 (diff) | |
| download | mu-456b44fbfb6003195aceef8ed41f194cd2e27b80.tar.gz | |
mu.subx: first code-gen test passing!
Diffstat (limited to '069allocate.subx')
| -rw-r--r-- | 069allocate.subx | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/069allocate.subx b/069allocate.subx index 31afc4ff..b6433689 100644 --- a/069allocate.subx +++ b/069allocate.subx @@ -457,6 +457,38 @@ _pending-test-lookup-failure: 5d/pop-to-ebp c3/return +# when comparing handles, just treat them as pure values +handle-equal?: # a: handle, b: handle -> eax: boolean + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + # eax = false + b8/copy-to-eax 0/imm32/false +$handle-equal?:compare-alloc-id: + # ecx = a->alloc_id + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx + # if (ecx != b->alloc_id) return false + 39/compare 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0x10/disp8 . # compare ecx and *(ebp+16) + 75/jump-if-!= $handle-equal?:end/disp8 +$handle-equal?:compare-address: + # ecx = handle->address + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx + # if (ecx != b->address) return false + 39/compare 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0x14/disp8 . # compare ecx and *(ebp+20) + 75/jump-if-!= $handle-equal?:end/disp8 +$handle-equal?:return-true: + # return true + b8/copy-to-eax 1/imm32/true +$handle-equal?:end: + # . restore registers + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + # helper: create a nested allocation descriptor (useful for tests) allocate-region: # ad: (addr allocation-descriptor), n: int, out: (addr handle allocation-descriptor) # . prologue |