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45
src/funcs.c
45
src/funcs.c
@@ -3,41 +3,11 @@
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// please see attached licence for full usage and rights
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#include "stdWullie.h"
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#include "localheader.h"
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// syscall1
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long syscall1(long number, long arg1){
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long result;
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// asm for a system call with one arg
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__asm__ __volatile(
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"syscall"
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: "=a"(result)
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: "a"(number), "D"(arg1)
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: "rcx", "r11", "memory"
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);
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return result;
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}
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// syscall3
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long syscall3(long number, long arg1, long arg2, long arg3){
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long result;
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// asm for a system call with 3 args
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__asm__ __volatile(
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"syscall"
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: "=a"(result)
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: "a"(number), "D"(arg1), "S"(arg2), "d"(arg3)
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: "rcx", "r11", "memory"
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);
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return result;
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}
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// our own exit LINUX ONLY
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void exit(int code){
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syscall1(SYS_exit, code);
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for(;;){}
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}
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@@ -60,16 +30,25 @@ void print(char *string){
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}
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// it can do everythig print can but better
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void ColorPrint(char *string, const char *color){
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void ColorPrint(char *string, char *color){
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syscall3(SYS_write, 1, (long)color, strlen(color));
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syscall3(SYS_write, 1, (long)string, strlen(string));
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syscall3(SYS_write, 1, (long)NORMAL, sizeof(NORMAL)-1);
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}
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// instead of changing the foreground it changes the background
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void BackgroundPrint(char *string, const char *Bcolor){
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void BackgroundPrint(char *string, char *Bcolor){
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syscall3(SYS_write, 1, (long)Bcolor, strlen(Bcolor));
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syscall3(SYS_write, 1, (long)string, strlen(string));
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syscall3(SYS_write, 1, (long)NORMAL, sizeof(NORMAL)-1);
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}
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// it should be set to W for wumbo
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long Wopen(const char *pathname, int flags, int mode){
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syscall3(SYS_open, (long)pathname, flags, mode);
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}
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// named like this to not cause compat issues with glibc
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long closeFile(long fd){
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syscall2(SYS_close, fd);
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}
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@@ -3,11 +3,13 @@
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// please see attached licence for full usage and rights
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#include "stdWullie.h"
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#include "localheader.h"
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int main(){
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print("look Ma no stdlib\n");
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ColorPrint("NOW WITH COLORS\n", RED);
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BackgroundPrint("and backgrounds\n", BBLUE);
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ColorPrint("NOW WITH COLORS", RED);
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return 0;
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}
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63
src/syscall.c
Normal file
63
src/syscall.c
Normal file
@@ -0,0 +1,63 @@
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// this code is licenced under Wrathmark licence
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// © 2026 wullie wulliestudio.com
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// please see attached licence for full usage and rights
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#include "localheader.h"
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// syscall1
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long syscall1(long number, long arg1){
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long result;
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// asm for a system call with one arg
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__asm__ __volatile(
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"syscall"
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: "=a"(result)
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: "a"(number), "D"(arg1)
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: "rcx", "r11", "memory"
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);
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return result;
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}
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long syscall2(long number, long arg1, long arg2){
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long result;
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// asm for system call with 2 args
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__asm__ __volatile(
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"syscall"
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: "=a"(result)
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: "a"(number), "D"(arg1), "S"(arg2)
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: "rcx", "r11","memory"
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);
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return result;
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}
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// syscall3
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long syscall3(long number, long arg1, long arg2, long arg3){
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long result;
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// asm for a system call with 3 args
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__asm__ __volatile(
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"syscall"
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: "=a"(result)
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: "a"(number), "D"(arg1), "S"(arg2), "d"(arg3)
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: "rcx", "r11", "memory"
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);
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return result;
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}
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long syscall4(long number, long arg1, long arg2, long arg3, long arg4){
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long result;
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__asm__ __volatile(
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"syscall"
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: "=a"(result)
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: "a"(number), "D"(arg1), "S"(arg2), "d"(arg3), "b"(arg4)
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: "rcx", "r11", "memory"
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);
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return result;
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}
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