mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-01-10 09:25:11 +00:00
Code Issues Packages Projects Releases Wiki Activity

Account for the delay slot

Browse Source
This commit is contained in:
Koakuma 2020-08-28 21:01:39 +07:00
parent c29da84c0e
commit dba009fd21
1 changed files with 7 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
lib/std/os/linux/sparc64.zig
View File

@ -1,18 +1,11 @@
usingnamespace @import("../bits.zig");
// TODO: Handle the case of pipe(2) returning multiple values.
// From syscall(2)'s manual page:
// Some architectures (namely, Alpha, IA-64, MIPS, SuperH, sparc/32, and sparc/64)
// use an additional register ("Retval2" in the above table) to pass back a second
// return value from the pipe(2) system call; Alpha uses this technique in the
// architecture-specific getxpid(2), getxuid(2), and getxgid(2) system calls
// as well. Other architectures do not use the second return value register in
// the system call interface, even if it is defined in the System V ABI.
pub fn syscall0(number: SYS) usize {
return asm volatile (
\\ t 0x6d
\\ bcc %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
@ -25,6 +18,7 @@ pub fn syscall1(number: SYS, arg1: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
@ -38,6 +32,7 @@ pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
@ -52,6 +47,7 @@ pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
@ -67,6 +63,7 @@ pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize)
return asm volatile (
\\ t 0x6d
\\ bcc %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
@ -83,6 +80,7 @@ pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize,
return asm volatile (
\\ t 0x6d
\\ bcc %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
@ -108,6 +106,7 @@ pub fn syscall6(
return asm volatile (
\\ t 0x6d
\\ bcc %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)