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| author | Kartik K. Agaram <vc@akkartik.com> | 2021-02-22 19:02:56 -0800 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2021-02-22 19:02:56 -0800 |
| commit | 5ddc9dfd9cfc7eedfbdcb5e5dbf2cf1f2f8bf6b5 (patch) | |
| tree | 09609a32214277bc7a8153fbb1745027f94f9a2b /baremetal/108write.subx | |
| parent | 90806a758738793500ac5ef9f68b216bc8cebe06 (diff) | |
| download | mu-5ddc9dfd9cfc7eedfbdcb5e5dbf2cf1f2f8bf6b5.tar.gz | |
7783 - baremetal: no, delete trace stream
What we need in baremetal is subtly different. We need depths in each line. Just rebuild it from scratch.
Diffstat (limited to 'baremetal/108write.subx')
| -rw-r--r-- | baremetal/108write.subx | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/baremetal/108write.subx b/baremetal/108write.subx index d94c259f..43e9bf9b 100644 --- a/baremetal/108write.subx +++ b/baremetal/108write.subx @@ -133,4 +133,88 @@ _test-stream: # (stream byte) 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +== code + +# 3-argument variant of _append +_append-3: # out: (addr byte), outend: (addr byte), s: (addr array byte) -> num_bytes_appended/eax + # . 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 = _append-4(out, outend, &s->data[0], &s->data[s->size]) + # . . push &s->data[s->size] + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 0/r32/eax 0x10/disp8 . # copy *(ebp+16) to eax + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 51/push-ecx + # . . push &s->data[0] + 8d/copy-address 1/mod/*+disp8 0/rm32/eax . . . 1/r32/ecx 4/disp8 . # copy eax+4 to ecx + 51/push-ecx + # . . push outend + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) + # . . push out + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) + # . . call + e8/call _append-4/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp +$_append-3:end: + # . restore registers + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +# 4-argument variant of _append +_append-4: # out: (addr byte), outend: (addr byte), in: (addr byte), inend: (addr byte) -> num_bytes_appended/eax: int + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + 52/push-edx + 53/push-ebx + 56/push-esi + 57/push-edi + # num_bytes_appended = 0 + b8/copy-to-eax 0/imm32 + # edi = out + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 8/disp8 . # copy *(ebp+8) to edi + # edx = outend + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx + # esi = in + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0x10/disp8 . # copy *(ebp+16) to esi + # ecx = inend + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0x14/disp8 . # copy *(ebp+20) to ecx +$_append-4:loop: + # if (in >= inend) break + 39/compare 3/mod/direct 6/rm32/esi . . . 1/r32/ecx . . # compare esi with ecx + 73/jump-if-addr>= $_append-4:end/disp8 + # if (out >= outend) abort # just to catch test failures fast + 39/compare 3/mod/direct 7/rm32/edi . . . 2/r32/edx . . # compare edi with edx + 73/jump-if-addr>= $_append-4:end/disp8 # TODO: abort + # *out = *in + 8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 3/r32/BL . . # copy byte at *esi to BL + 88/copy-byte 0/mod/indirect 7/rm32/edi . . . 3/r32/BL . . # copy byte at BL to *edi + # ++num_bytes_appended + 40/increment-eax + # ++in + 46/increment-esi + # ++out + 47/increment-edi + eb/jump $_append-4:loop/disp8 +$_append-4:end: + # . restore registers + 5f/pop-to-edi + 5e/pop-to-esi + 5b/pop-to-ebx + 5a/pop-to-edx + 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 + # . . vim:nowrap:textwidth=0 |