diff options
Diffstat (limited to 'src/emu/syscall.c')
| -rw-r--r-- | src/emu/syscall.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/emu/syscall.c b/src/emu/syscall.c index fe0d83e..625bbf4 100644 --- a/src/emu/syscall.c +++ b/src/emu/syscall.c @@ -5,19 +5,21 @@ #include "mem.h" #include "syscall.h" +#define arg(n) load(GPR[SP] + 4*n) + void do_syscall(void) { - switch (GPR[1]) { + switch (arg(0)) { case SYS_exit: - exit(GPR[2]); + exit(arg(1)); break; case SYS_read: - GPR[2] = read(GPR[2], &MEM[GPR[3]], GPR[4]); + push(read(arg(1), &MEM[arg(2)], arg(3))); break; case SYS_write: - GPR[2] = write(GPR[2], &MEM[GPR[3]], GPR[4]); + push(write(arg(1), &MEM[arg(2)], arg(3))); break; default: - GPR[2] = -1; + push(-1); } } |