diff options
Diffstat (limited to 'baremetal/308allocate-array.subx')
| -rw-r--r-- | baremetal/308allocate-array.subx | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/baremetal/308allocate-array.subx b/baremetal/308allocate-array.subx new file mode 100644 index 00000000..5cc0fe1b --- /dev/null +++ b/baremetal/308allocate-array.subx @@ -0,0 +1,25 @@ +# 2-arg version of allocate-array. +# Really only intended to be called from code generated by mu.subx. + +== code + +allocate-array2: # ad: (addr allocation-descriptor), array-len: int, elem-size: int, out: (addr handle array _) + # . prologue + 55/push-ebp + 89/<- %ebp 4/r32/esp + # . save registers + 50/push-eax + 52/push-edx + # + 8b/-> *(ebp+0xc) 0/r32/eax + f7 4/subop/multiply-into-edx-eax *(ebp+0x10) + # TODO: check edx for overflow + (allocate-array *(ebp+8) %eax *(ebp+0x14)) +$allocate-array2:end: + # . restore registers + 5a/pop-to-edx + 58/pop-to-eax + # . epilogue + 89/<- %esp 5/r32/ebp + 5d/pop-to-ebp + c3/return |