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polmon: cleanup

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This commit is contained in:
Paul Mathieu
2025-10-06 22:49:52 +02:00
parent 1208f1f66e
commit 3d90cbadf8
1 changed files with 2 additions and 32 deletions
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34
src/polmon.cc
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@@ -2,6 +2,8 @@
#include <cstdio> #include <cstdio>
#include <cstring> #include <cstring>
#include "polos.h"
namespace { namespace {
constexpr int kDumpSize = 16; constexpr int kDumpSize = 16;
@@ -81,21 +83,6 @@ void WriteUint16ln(uint16_t a) {
puts("\r\n"); puts("\r\n");
} }
uint8_t __get_far_u8__(uint16_t addr, uint16_t seg) {
register uint16_t ad asm("si") = addr;
register uint16_t sg asm("ds") = seg;
register uint8_t ret asm("al");
asm("lodsb \n\t" : "=r"(ret) : "r"(ad), "r"(sg));
return ret;
}
void __set_far_u8__(uint16_t addr, uint16_t seg, uint8_t val) {
register uint16_t ad asm("di") = addr;
register uint16_t sg asm("es") = seg;
register uint8_t v asm("al") = val;
asm("stosb \n\t" ::"r"(sg), "r"(ad), "r"(v) : "memory");
}
__attribute__((noreturn)) inline static void __basic__() { __attribute__((noreturn)) inline static void __basic__() {
asm volatile("movw $0x40, %ax \n\t" asm volatile("movw $0x40, %ax \n\t"
"mov %ax, %ds \n\t" "mov %ax, %ds \n\t"
@@ -140,23 +127,6 @@ void ClearScreen() {
: "ax", "cc"); : "ax", "cc");
} }
void Status(uint8_t status) {
asm volatile("xorb %%bh, %%bh \n\t"
"movb $0x03, %%ah \n\t"
"int $0x10 \n\t"
"mov %%dx, %%di \n\t"
"movb $0x02, %%ah \n\t"
"movw $77, %%dx \n\t"
"int $0x10 \n\t"
"movb %0, %%al \n\t"
"call %1 \n\t"
"movb $0x02, %%ah \n\t"
"movw %%di, %%dx \n\t"
"int $0x10" ::"rm"(status),
"l"(WriteUint8)
: "ax", "bh", "dx", "cx", "di", "cc");
}
char toupper(char c) { char toupper(char c) {
if (c >= 'a' && c <= 'z') { if (c >= 'a' && c <= 'z') {
return c - ('a' - 'A'); return c - ('a' - 'A');