diff options
Diffstat (limited to 'apps/mu.subx')
| -rw-r--r-- | apps/mu.subx | 67 |
1 files changed, 41 insertions, 26 deletions
diff --git a/apps/mu.subx b/apps/mu.subx index f2326284..367fa3d9 100644 --- a/apps/mu.subx +++ b/apps/mu.subx @@ -3053,7 +3053,11 @@ $check-no-tokens-left:end: parse-mu-named-block: # name: (addr slice), in: (addr buffered-file), vars: (addr stack (handle var)), fn: (handle function) -> result/eax: (handle stmt) # pseudocode: + # var v: (handle var) = new-var(name except trailing ':', 0) + # v->block-depth = *Curr-block-depth # containing block depth + # push(vars, v) # result = parse-mu-block(in, vars, fn) + # pop(vars) # result->tag = named-block # result->name = slice-to-string(name) # return result @@ -3063,17 +3067,43 @@ parse-mu-named-block: # name: (addr slice), in: (addr buffered-file), vars: (ad 89/<- %ebp 4/r32/esp # . save registers 51/push-ecx - # var s/ecx: (addr array byte) = slice-to-string(name) - (slice-to-string Heap *(ebp+8)) # => eax - 89/<- %ecx 0/r32/eax - # + 57/push-edi + # push a var for the label on to 'vars' + { + # ecx = name + 8b/-> *(ebp+8) 1/r32/ecx + # var s/ecx: slice = {name->start, name->end} + ff 6/subop/push *(ecx+4) # Slice-end + ff 6/subop/push *ecx # Slice-start + 89/<- %ecx 4/r32/esp + # strip the trailing ':' from s + ff 1/subop/decrement *(ecx+4) + # var s/ecx: (address array byte) + (slice-to-string Heap %ecx) # => eax + 89/<- %ecx 0/r32/eax + # var type/eax: (handle tree type-id) = literal + (allocate Heap *Tree-size) # => eax + (zero-out %eax *Tree-size) # default type is 'literal' + # var v: (handle var) = new-var(s) + (new-var Heap %ecx %eax *Curr-block-depth 0 0) # => eax + # push(vars, v) + (push *(ebp+0x10) %eax) + # reclaim s + 81 0/subop/add %esp 8/imm32 + } + # edi = result (parse-mu-block *(ebp+0xc) *(ebp+0x10) *(ebp+0x14)) # => eax + 89/<- %edi 0/r32/eax + (pop *(ebp+0x10)) # => eax # result->tag = named-block - c7 0/subop/copy *eax 4/imm32/named-block # Stmt-tag + c7 0/subop/copy *edi 4/imm32/named-block # Stmt-tag # result->name = slice-to-string(name) - 89/<- *(eax+8) 1/r32/ecx # Named-block-name + (slice-to-string Heap *(ebp+8)) # => eax + 89/<- *(edi+8) 0/r32/eax # Named-block-name $parse-mu-named-block:end: + 89/<- %eax 7/r32/edi # . restore registers + 5f/pop-to-edi 59/pop-to-ecx # . epilogue 89/<- %esp 5/r32/ebp @@ -3337,26 +3367,7 @@ $add-operation-and-inputs-to-stmt:read-inouts: (slice-equal? %ecx "<-") 3d/compare-eax-and 0/imm32 0f 85/jump-if-!= $add-operation-and-inputs-to-stmt:abort/disp32 - # if (name starts with "$") it's a label - { - # var eax: byte = name[0] - 8b/-> *ecx 0/r32/eax - 8a/copy-byte *eax 0/r32/AL - 81 4/subop/and %eax 0xff/imm32 - # if (eax != '$') goto next condition - 3d/compare-eax-and 0x24/imm32/dollar - 75/jump-if-!= break/disp8 - # var eax: (handle var) - # labels aren't in vars; just create a new record on each use - (new-label Heap %ecx) # => eax - # stmt->inouts = append(eax, stmt->inouts) - (append-list Heap %eax *(edi+8)) # Stmt1-inouts => eax - 89/<- *(edi+8) 0/r32/eax # Stmt1-inouts - # continue - e9/jump $add-operation-and-inputs-to-stmt:read-inouts/disp32 - } -$add-operation-and-inputs-to-stmt:regular-inout: - # otherwise + # (lookup-var-or-literal %ecx *(ebp+0x10)) # => eax (append-list Heap %eax *(edi+8)) # Stmt1-inouts or Regvardef-inouts => eax 89/<- *(edi+8) 0/r32/eax # Stmt1-inouts or Regvardef-inouts @@ -4378,6 +4389,10 @@ $emit-cleanup-code:reclaim-var-in-register: $emit-cleanup-code:reclaim-var-on-stack: 50/push-eax (size-of %ebx) # => eax + # don't emit code for labels + 3d/compare-eax-and 0/imm32 + 74/jump-if-= break/disp8 + # (emit-indent *(ebp+8) *Curr-block-depth) (write-buffered *(ebp+8) "81 0/subop/add %esp ") (print-int32-buffered *(ebp+8) %eax) |