diff options
| author | Kartik Agaram <vc@akkartik.com> | 2020-05-05 15:11:04 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-05-18 00:44:48 -0700 |
| commit | 397966f615c1a206e071d0a24120ff0311d3cb5a (patch) | |
| tree | 21f1d1cc098c0c7b3d516b5c776fdbf3ec2bf77c | |
| parent | c2c5ce566c64817436682fd109f63548c78b84c7 (diff) | |
| download | mu-397966f615c1a206e071d0a24120ff0311d3cb5a.tar.gz | |
mu.subx: lookup-or-define-var
| -rw-r--r-- | apps/mu.subx | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/apps/mu.subx b/apps/mu.subx index 20b9c906..91a3393c 100644 --- a/apps/mu.subx +++ b/apps/mu.subx @@ -5666,31 +5666,31 @@ $lookup-var-helper:error1: cd/syscall 0x80/imm8 # never gets here -# TODO # return first 'name' from the top (back) of 'vars' and create a new var for a fn output if not found lookup-or-define-var: # name: (addr slice), vars: (addr stack (handle var)), fn: (addr function), out: (addr handle var) # . prologue 55/push-ebp 89/<- %ebp 4/r32/esp # . save registers - 51/push-ecx + 50/push-eax # - (lookup-var-helper *(ebp+8) *(ebp+0xc)) # => eax + (lookup-var-helper *(ebp+8) *(ebp+0xc) *(ebp+0x14)) { - # if (result != 0) return - 3d/compare-eax-and 0/imm32 + # if (out != 0) return + 8b/-> *(ebp+0x14) 0/r32/eax + 81 7/subop/compare *eax 0/imm32 75/jump-if-!= break/disp8 # if name is one of fn's outputs, return it { - (find-in-function-outputs *(ebp+0x10) *(ebp+8)) # => eax - 3d/compare-eax-and 0/imm32 + (find-in-function-outputs *(ebp+0x10) *(ebp+8) *(ebp+0x14)) + 81 7/subop/compare *eax 0/imm32 # otherwise abort - 0f 84/jump-if-!= $lookup-var:abort/disp32 + 0f 84/jump-if-= $lookup-var:abort/disp32 } } $lookup-or-define-var:end: # . restore registers - 59/pop-to-ecx + 58/pop-to-eax # . epilogue 89/<- %esp 5/r32/ebp 5d/pop-to-ebp |