dawids/lang-bootstrap
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first working executable!

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pommicket 2022-02-10 16:06:17 -05:00
parent b88de92fc7
commit d8bb5b8957
4 changed files with 134 additions and 13 deletions
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6
README.md
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@ -130,12 +130,14 @@ ax bx cx dx sp bp si di
│ mov al, [rbx] │ 8a 03 │ load 1 byte from addrress rbx into al │
│ mov rax, [rbp+IMM32] │ 48 8b 85 IMM32 │ load 8 bytes from address rbp+IMM32 │
│ │ │ into rax (note: IMM32 may be negative) │
│ lea rax, [rbp+IMM32] │ 48 8d 85 IMM32 │ set rax to rbp+IMM32 │
│ lea rsp, [rbp+IMM32] │ 48 8d a5 IMM32 │ set rsp to rbp+IMM32 │
│ mov rax, [rsp+IMM32] │ 48 8b 84 24 IMM32 │ load 8 bytes from address rsp+IMM32 │
│ │ │ into rax (note: IMM32 may be negative) │
│ mov [rbp+IMM32], rax │ 48 89 85 IMM32 │ store rax in 8 bytes at rbp+IMM32 │
│ mov [rsp+IMM32], rax │ 48 89 84 24 IMM32 │ store rax in 8 bytes at rsp+IMM32 │
│ mov [rsp], rbp │ 48 89 2c 24 │ store rbp in 8 bytes at rsp │
│ mov rbp, [rsp] │ 48 8b 2c 24 │ load 8 bytes from rsp into rbp │
│ lea rax, [rbp+IMM32] │ 48 8d 85 IMM32 │ set rax to rbp+IMM32 │
│ lea rsp, [rbp+IMM32] │ 48 8d a5 IMM32 │ set rsp to rbp+IMM32 │
│ neg rax │ 48 f7 d8 │ set rax to -rax │
│ add rax, rbx │ 48 01 d8 │ add rbx to rax │
│ sub rax, rbx │ 48 29 d8 │ subtract rbx from rax │