diff options
| author | Benedikt Böhm <bb@xnull.de> | 2009-07-06 21:21:19 +0200 |
|---|---|---|
| committer | Benedikt Böhm <bb@xnull.de> | 2009-07-06 21:21:19 +0200 |
| commit | ac4fb25412982447af2e718d3824e6acf7d3a2dd (patch) | |
| tree | 4eb8d49be8363dda95e3e1851e8dc04e6c3cb4f5 /src/emu | |
| parent | 37aec7789434c3ade9a1df630b1eec6c997487b2 (diff) | |
| download | swppy-ac4fb25412982447af2e718d3824e6acf7d3a2dd.tar.gz swppy-ac4fb25412982447af2e718d3824e6acf7d3a2dd.tar.xz swppy-ac4fb25412982447af2e718d3824e6acf7d3a2dd.zip | |
implement print statement
Diffstat (limited to 'src/emu')
| -rw-r--r-- | src/emu/syscall.c | 8 | ||||
| -rw-r--r-- | src/emu/syscall.h | 7 |
2 files changed, 5 insertions, 10 deletions
diff --git a/src/emu/syscall.c b/src/emu/syscall.c index 625bbf4..aba3448 100644 --- a/src/emu/syscall.c +++ b/src/emu/syscall.c @@ -1,5 +1,6 @@ #include <unistd.h> #include <stdlib.h> +#include <inttypes.h> #include "cpu.h" #include "mem.h" @@ -13,11 +14,8 @@ void do_syscall(void) case SYS_exit: exit(arg(1)); break; - case SYS_read: - push(read(arg(1), &MEM[arg(2)], arg(3))); - break; - case SYS_write: - push(write(arg(1), &MEM[arg(2)], arg(3))); + case SYS_print: + printf("%"PRIu32"\n", arg(1)); break; default: push(-1); diff --git a/src/emu/syscall.h b/src/emu/syscall.h index 7c7265c..afd3e9d 100644 --- a/src/emu/syscall.h +++ b/src/emu/syscall.h @@ -2,14 +2,11 @@ #define _SYSCALL_H /* calling convention: - * - pass syscall number in GPR[1] - * - pass arguments in GPR[2]-GPR[9] - * - return code is passed in GPR[2] + * - syscall number and params are passed on stack */ #define SYS_exit 0x00 -#define SYS_read 0x01 -#define SYS_write 0x02 +#define SYS_print 0x01 void do_syscall(void); |