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| author | JozanLeClerc <bousset.rudy@gmail.com> | 2020-04-27 02:13:47 +0200 |
|---|---|---|
| committer | JozanLeClerc <bousset.rudy@gmail.com> | 2020-04-27 02:13:47 +0200 |
| commit | 04df2697e1e6e72eeeec298fa5377e494dc98473 (patch) | |
| tree | 9cc641d6c9a3c4dbd8d44db93f8f54a46bd04e5a | |
| parent | Rewrite started (diff) | |
| download | lowbat-bsd-04df2697e1e6e72eeeec298fa5377e494dc98473.tar.gz lowbat-bsd-04df2697e1e6e72eeeec298fa5377e494dc98473.tar.bz2 lowbat-bsd-04df2697e1e6e72eeeec298fa5377e494dc98473.tar.xz lowbat-bsd-04df2697e1e6e72eeeec298fa5377e494dc98473.tar.zst lowbat-bsd-04df2697e1e6e72eeeec298fa5377e494dc98473.zip | |
First file translated
| -rw-r--r-- | asm/c_args.asm | 95 |
1 files changed, 69 insertions, 26 deletions
diff --git a/asm/c_args.asm b/asm/c_args.asm index dcca5d3..c8178d4 100644 --- a/asm/c_args.asm +++ b/asm/c_args.asm @@ -10,38 +10,81 @@ /* */ /* ************************************************************************************ */ -;; jo_c_args(argc: rdi, *argv[]: rsi) -;; ---------------------------------- -;; returns 0 if args are invalid -;; returns 1 if args are valid +/* ******************************* */ +/* c_args(argc: rdi, *argv[]: rsi) */ +/* ------------------------------- */ +/* returns 0 if args are invalid */ +/* returns 1 if args are valid */ +/* ******************************* */ -section .text - extern strncmp - global jo_c_args +.text + .extern strncmp + .globl c_args -jo_c_args: - cmp rdi, 0x2 +c_args: + cmp $0x2, %rdi jle no_args - mov rax, [rsi + 0x8 * 0x2] - cmp byte [rax + 0x0], 0x0 + xorq %rax, %rax + pushq %rcx + xorq %rcx, %rcx + movb $0x8, %cl + movq (%rsi, %rcx, 2), %rax + cmpb $0x0, (%rax) je no_args - push rdi - mov rdi, [rsi + 0x8 * 0x1] - push rsi - mov rsi, reference - mov rdx, reflen - call strncmp - pop rsi - pop rdi - cmp rax, 0x0 + pushq %rdi + movq (%rsi, %rcx, 1), %rdi + pushq %rsi + movq $reference, %rsi + pushq %rdx + xorq %rdx, %rdx + movb $0x6, %dl + callq strncmp + popq %rdx + popq %rsi + popq %rdi + popq %rcx + cmp $0x0, %rax jne no_args - mov rax, 0x1 - retq + xorq %rax, %rax + movb $0x1, %al + jmp return no_args: - xor rax, rax + xorq %rax, %rax + +return: retq -section .data - reference: db "--say", 0x0 - reflen: equ $ - reference +.data + reference: .asciz "--say" + +/* ;; section .text */ +/* ;; extern strncmp */ +/* ;; global jo_c_args */ +/* */ +/* ;; jo_c_args: */ +/* ;; cmp rdi, 0x2 */ + /* ;; jle no_args */ + /* ;; mov rax, [rsi + 0x8 * 0x2] */ + /* ;; cmp byte [rax + 0x0], 0x0 */ + /* ;; je no_args */ + /* ;; push rdi */ + /* ;; mov rdi, [rsi + 0x8 * 0x1] */ + /* ;; push rsi */ + /* ;; mov rsi, reference */ + /* ;; mov rdx, reflen */ + /* ;; call strncmp */ + /* ;; pop rsi */ + /* ;; pop rdi */ + /* ;; cmp rax, 0x0 */ + /* ;; jne no_args */ + /* ;; mov rax, 0x1 */ + /* ;; retq */ +/* */ +/* ;; no_args: */ +/* ;; xor rax, rax */ +/* ;; retq */ +/* */ +/* ;; section .data */ +/* ;; reference: db "--say", 0x0 */ +/* ;; reflen: equ $ - reference */ |