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27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <libc.h> |
29 | #include <libc.h> |
30 | 30 | ||
31 | sysarg_t __syscall(const sysarg_t p1, const sysarg_t p2, |
31 | sysarg_t __syscall(const sysarg_t p1, const sysarg_t p2, |
32 | const sysarg_t p3, const syscall_t id) |
32 | const sysarg_t p3, const sysarg_t p4, |
- | 33 | const syscall_t id) |
|
33 | { |
34 | { |
34 | register sysarg_t __mips_reg_a0 asm("$4") = p1; |
35 | register sysarg_t __mips_reg_a0 asm("$4") = p1; |
35 | register sysarg_t __mips_reg_a1 asm("$5") = p2; |
36 | register sysarg_t __mips_reg_a1 asm("$5") = p2; |
36 | register sysarg_t __mips_reg_a2 asm("$6") = p3; |
37 | register sysarg_t __mips_reg_a2 asm("$6") = p3; |
37 | register sysarg_t __mips_reg_a3 asm("$7") = id; |
38 | register sysarg_t __mips_reg_a3 asm("$7") = p4; |
- | 39 | register sysarg_t __mips_reg_t0 asm("$8") = id; |
|
38 | register sysarg_t __mips_reg_v0 asm("$2"); |
40 | register sysarg_t __mips_reg_v0 asm("$2"); |
39 | 41 | ||
40 | asm volatile ( |
42 | asm volatile ( |
41 | "syscall\n" |
43 | "syscall\n" |
42 | : "=r" (__mips_reg_v0) |
44 | : "=r" (__mips_reg_v0) |
43 | : "r" (__mips_reg_a0), |
45 | : "r" (__mips_reg_a0), |
44 | "r" (__mips_reg_a1), |
46 | "r" (__mips_reg_a1), |
45 | "r" (__mips_reg_a2), |
47 | "r" (__mips_reg_a2), |
46 | "r" (__mips_reg_a3) |
48 | "r" (__mips_reg_a3), |
- | 49 | "r" (__mips_reg_t0) |
|
47 | ); |
50 | ); |
48 | 51 | ||
49 | return __mips_reg_v0; |
52 | return __mips_reg_v0; |
50 | } |
53 | } |