Merge branch 'main' of git.disroot.org:dvonik/omos-tcnj2024

no
This commit is contained in:
spikey 2024-02-18 11:50:54 -05:00
commit 7f11e9460b
3 changed files with 98 additions and 11 deletions

15
sys/include/string.h Normal file
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@ -0,0 +1,15 @@
#ifndef STRING_H
#define STRING_H
#include <types.h>
u32 strlen(const char *str);
char* strtol(s32 num, char *str, s32 base);
char* strtoul(u32 num, char *str, s32 base);
char* strcpy(char *dest, const char *src);
char* strncpy(char *dest, const char *src, size_t count);
char* strcat(char *dest, const char *src);
char* strncat(char *dest, const char *src, size_t count);
s32 strcmp(const char *lhs, const char *rhs);
#endif

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@ -12,7 +12,7 @@ strlen(const char *str)
} }
char* char*
itoa(s32 num, char *str, s32 base) strtol(s32 num, char *str, s32 base)
{ {
s32 i = 0; s32 i = 0;
@ -33,7 +33,7 @@ itoa(s32 num, char *str, s32 base)
} }
char* char*
utoa(u32 num, char *str, s32 base) strtoul(u32 num, char *str, s32 base)
{ {
s32 i = 0; s32 i = 0;
@ -48,6 +48,80 @@ utoa(u32 num, char *str, s32 base)
return str; return str;
} }
char*
strcpy(char *dest, const char *src)
{
u32 i = 0;
while (src[i] != NULL) {
dest[i] = src[i];
i++;
}
return dest;
}
char*
strncpy(char *dest, const char *src, size_t count)
{
u32 i = 0;
while (src[i] != NULL && i < count) {
dest[i] = src[i];
i++;
}
return dest;
}
char*
strcat(char *dest, const char *src)
{
u32 i = 0;
while (dest[i] != NULL) i++;
while (src[i] != NULL) {
dest[i] = src[i];
i++;
}
dest[i] = '\0';
return dest;
}
char*
strncat(char *dest, const char *src, size_t count)
{
u32 i = 0;
while (dest[i] != NULL) i++;
while (src[i] != NULL && i < count) {
dest[i] = src[i];
i++;
}
dest[i] = '\0';
return dest;
}
s32
strcmp(const char *lhs, const char *rhs)
{
u32 i = 0;
while (lhs[i] != NULL && rhs[i] != NULL) {
if (lhs[i] != rhs[i]) {
return lhs[i] - rhs[i];
}
}
return 0;
}
s32 s32
printf(const char *format, ...) printf(const char *format, ...)
{ {
@ -60,22 +134,22 @@ printf(const char *format, ...)
if (format[i + 1] == 'd' || format[i + 1] == 'i') { if (format[i + 1] == 'd' || format[i + 1] == 'i') {
//integer numbers //integer numbers
const s32 num = va_arg(list, s32); const s32 num = va_arg(list, s32);
const char* str = itoa(num, strbuf, 10); const char* str = strtol(num, strbuf, 10);
vga_write(str, sizeof(str), 0x0f); vga_write(str, sizeof(str), 0x0f);
} else if (format[i + 1] == 'o') { } else if (format[i + 1] == 'o') {
//octal numbers //octal numbers
const s32 num = va_arg(list, s32); const s32 num = va_arg(list, s32);
const char *str = itoa(num, strbuf, 8); const char *str = strtol(num, strbuf, 8);
vga_write(str, sizeof(str), 0x0f); vga_write(str, sizeof(str), 0x0f);
} else if (format[i + 1] == 'u') { } else if (format[i + 1] == 'u') {
//unsigned integers //unsigned integers
const u32 num = va_arg(list, u32); const u32 num = va_arg(list, u32);
const char *str = utoa(num, strbuf, 10); const char *str = strtoul(num, strbuf, 10);
vga_write(str, sizeof(str), 0x0f); vga_write(str, sizeof(str), 0x0f);
} else if (format[i + 1] == 'x') { } else if (format[i + 1] == 'x') {
//hexadecimal numbers //hexadecimal numbers
const u32 num = va_arg(list, u32); const u32 num = va_arg(list, u32);
const char* str = utoa(num, strbuf, 16); const char* str = strtoul(num, strbuf, 16);
vga_write(str, sizeof(str), 0x0f); vga_write(str, sizeof(str), 0x0f);
} else if (format[i + 1] == 's') { } else if (format[i + 1] == 's') {
//strings //strings

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@ -3,15 +3,13 @@
u32 curr = START; u32 curr = START;
void void
memory_init(void) memory_init(void)
{ {
u32 esp, ebp; u32 esp, ebp;
ebp = STACK_START; ebp = STACK_START;
esp = STACK_START; esp = STACK_START;
}
}
void *malloc(s32 size) { void *malloc(s32 size) {
u32 addr = curr; u32 addr = curr;