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polmon: bp in clobber list works not

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Paul Mathieu
2025-09-25 11:53:47 +02:00
parent 59def426da
commit 2120df695e
1 changed files with 3 additions and 1 deletions
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polmon.cc
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@@ -54,12 +54,14 @@ uint8_t getc() {
void putc(uint8_t c) { void putc(uint8_t c) {
asm volatile ( asm volatile (
"push %%bp \n\t"
"movb %0, %%al \n\t" "movb %0, %%al \n\t"
"movb $0x0e, %%ah \n\t" "movb $0x0e, %%ah \n\t"
"movb $0, %%bh \n\t" "movb $0, %%bh \n\t"
"int $0x10 \n\t" "int $0x10 \n\t"
"pop %%bp \n\t"
:: "r" (c) :: "r" (c)
: "ax", "bh", "cc", "bp" : "ax", "bh", "cc"
); );
} }