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printf: Macro process_arg to decrease repeated code

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Kwarde
2025-07-15 10:45:01 +02:00
parent 351f8058f9
commit a4855c3b75
1 changed files with 22 additions and 52 deletions
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74
src/console.asm
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@@ -120,6 +120,20 @@ printf:
add rsp, SIZE_QWORD
%endmacro
%macro process_arg 3 ;process_arg [base] [upper/lowercase (r8)] [itoa/utoa]
load_arg rsi
push_regs
mov rdi, rsi
mov rsi, %1
mov rdx, r12
mov rcx, r13
mov r8, %2
call %3
mov rsi, rax
pop_regs
jmp .insertString
%endmacro
; entry:
push rbp
mov rbp, rsp
@@ -275,71 +289,27 @@ printf:
;--- '%i' / '%d' / '%u' ---;
.rep_d:
load_arg rsi
push_regs
mov rdx, r12
mov rcx, r13
cmp byte [rdi + 1], 'u'
je .callUTOA
mov rdi, rsi
mov rsi, 10
call itoa
jmp .pr
.callUTOA:
mov rdi, rsi
mov rsi, 10
mov r8, 0
call utoa
.pr:
mov rsi, rax
pop_regs
jmp .insertString
je .unsigned
process_arg 10, 0, itoa
.unsigned:
process_arg 10, 0, utoa
;--- '%x' / '%X' ---;
.rep_x:
load_arg rsi
push_regs
mov rdx, r12
mov rcx, r13
mov r8, 0
cmp byte [rdi + 1], 'x'
je .lower
mov r8, 1
process_arg 16, 1, utoa
.lower:
mov rdi, rsi
mov rsi, 16
call utoa
mov rsi, rax
pop_regs
jmp .insertString
process_arg 16, 0, utoa
;--- '%b' ---;
.rep_b:
load_arg rsi
push_regs
mov rdi, rsi
mov rsi, 2
mov rdx, r12
mov rcx, r13
mov r8, 0
call utoa
mov rsi, rax
pop_regs
jmp .insertString
process_arg 2, 0, utoa
;--- '%o' ---;
.rep_o:
load_arg rsi
push_regs
mov rdi, rsi
mov rsi, 8
mov rdx, r12
mov rcx, r13
mov r8, 0
call utoa
mov rsi, rax
pop_regs
jmp .insertString
process_arg 8, 0, utoa
;--- '%s' ---;
.rep_s: