| ... | ... | @@ -1,18 +1,11 @@ |
| 1 | 1 | usingnamespace @import("../bits.zig"); |
| 2 | 2 | |
| 3 | | // TODO: Handle the case of pipe(2) returning multiple values. |
| 4 | | // From syscall(2)'s manual page: |
| 5 | | // Some architectures (namely, Alpha, IA-64, MIPS, SuperH, sparc/32, and sparc/64) |
| 6 | | // use an additional register ("Retval2" in the above table) to pass back a second |
| 7 | | // return value from the pipe(2) system call; Alpha uses this technique in the |
| 8 | | // architecture-specific getxpid(2), getxuid(2), and getxgid(2) system calls |
| 9 | | // as well. Other architectures do not use the second return value register in |
| 10 | | // the system call interface, even if it is defined in the System V ABI. |
| 11 | 3 | |
| 12 | 4 | pub fn syscall0(number: SYS) usize { |
| 13 | 5 | return asm volatile ( |
| 14 | 6 | \\ t 0x6d |
| 15 | 7 | \\ bcc %%xcc, 1f |
| 8 | \\ nop |
| 16 | 9 | \\ neg %%o0 |
| 17 | 10 | \\ 1: |
| 18 | 11 | : [ret] "={o0}" (-> usize) |
| ... | ... | @@ -25,6 +18,7 @@ pub fn syscall1(number: SYS, arg1: usize) usize { |
| 25 | 18 | return asm volatile ( |
| 26 | 19 | \\ t 0x6d |
| 27 | 20 | \\ bcc %%xcc, 1f |
| 21 | \\ nop |
| 28 | 22 | \\ neg %%o0 |
| 29 | 23 | \\ 1: |
| 30 | 24 | : [ret] "={o0}" (-> usize) |
| ... | ... | @@ -38,6 +32,7 @@ pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize { |
| 38 | 32 | return asm volatile ( |
| 39 | 33 | \\ t 0x6d |
| 40 | 34 | \\ bcc %%xcc, 1f |
| 35 | \\ nop |
| 41 | 36 | \\ neg %%o0 |
| 42 | 37 | \\ 1: |
| 43 | 38 | : [ret] "={o0}" (-> usize) |
| ... | ... | @@ -52,6 +47,7 @@ pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize { |
| 52 | 47 | return asm volatile ( |
| 53 | 48 | \\ t 0x6d |
| 54 | 49 | \\ bcc %%xcc, 1f |
| 50 | \\ nop |
| 55 | 51 | \\ neg %%o0 |
| 56 | 52 | \\ 1: |
| 57 | 53 | : [ret] "={o0}" (-> usize) |
| ... | ... | @@ -67,6 +63,7 @@ pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) |
| 67 | 63 | return asm volatile ( |
| 68 | 64 | \\ t 0x6d |
| 69 | 65 | \\ bcc %%xcc, 1f |
| 66 | \\ nop |
| 70 | 67 | \\ neg %%o0 |
| 71 | 68 | \\ 1: |
| 72 | 69 | : [ret] "={o0}" (-> usize) |
| ... | ... | @@ -83,6 +80,7 @@ pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, |
| 83 | 80 | return asm volatile ( |
| 84 | 81 | \\ t 0x6d |
| 85 | 82 | \\ bcc %%xcc, 1f |
| 83 | \\ nop |
| 86 | 84 | \\ neg %%o0 |
| 87 | 85 | \\ 1: |
| 88 | 86 | : [ret] "={o0}" (-> usize) |
| ... | ... | @@ -108,6 +106,7 @@ pub fn syscall6( |
| 108 | 106 | return asm volatile ( |
| 109 | 107 | \\ t 0x6d |
| 110 | 108 | \\ bcc %%xcc, 1f |
| 109 | \\ nop |
| 111 | 110 | \\ neg %%o0 |
| 112 | 111 | \\ 1: |
| 113 | 112 | : [ret] "={o0}" (-> usize) |
Koakuma <koachan@protonmail.com> 2020-08-28 21:01:39+07:00
lib