Commit 95b638f613406c6bd609c7addd666dbe1758486a | zig

author	taylor.fish <contact@taylor.fish> 2025-06-22 16:36:44-07:00
committer	taylor.fish <contact@taylor.fish> 2025-06-22 16:48:36-07:00
log	95b638f613406c6bd609c7addd666dbe1758486a
tree	b443561403ca23a7041dc81ffbbc353600e74c1c
parent	79807468e747bac056cfea4340065e49a5d97120

Update 32-bit PowerPC syscall functions

musl and glibc both specify r0 as an output register because its value
may be overwritten by system calls. As with the updates for 64-bit
PowerPC in the previous commit, this commit brings Zig's syscall
functions for 32-bit PowerPC in line with musl and glibc by adding r0 to
the list of clobbers. (Listing r0 as both an input and a clobber is as
close as we can get to musl, which declares it as a "+r" read-write
output, since Zig doesn't support multiple outputs or the "+"
specifier.)

1 files changed, 7 insertions(+), 7 deletions(-)

lib
- std
  - os
    linux
    powerpc.zig

lib/std/os/linux/powerpc.zig+7-7

...	@@ -22,7 +22,7 @@ pub fn syscall0(number: SYS) usize {	...	@@ -22,7 +22,7 @@ pub fn syscall0(number: SYS) usize {
22	\\ 1:	22	\\ 1:
23	: [ret] "={r3}" (-> usize),	23	: [ret] "={r3}" (-> usize),
24	: [number] "{r0}" (@intFromEnum(number)),	24	: [number] "{r0}" (@intFromEnum(number)),
25	: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"	25	: "memory", "cr0", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
26	);	26	);
27	}	27	}
28		28
...	@@ -35,7 +35,7 @@ pub fn syscall1(number: SYS, arg1: usize) usize {	...	@@ -35,7 +35,7 @@ pub fn syscall1(number: SYS, arg1: usize) usize {
35	: [ret] "={r3}" (-> usize),	35	: [ret] "={r3}" (-> usize),
36	: [number] "{r0}" (@intFromEnum(number)),	36	: [number] "{r0}" (@intFromEnum(number)),
37	[arg1] "{r3}" (arg1),	37	[arg1] "{r3}" (arg1),
38	: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"	38	: "memory", "cr0", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
39	);	39	);
40	}	40	}
41		41
...	@@ -49,7 +49,7 @@ pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {	...	@@ -49,7 +49,7 @@ pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
49	: [number] "{r0}" (@intFromEnum(number)),	49	: [number] "{r0}" (@intFromEnum(number)),
50	[arg1] "{r3}" (arg1),	50	[arg1] "{r3}" (arg1),
51	[arg2] "{r4}" (arg2),	51	[arg2] "{r4}" (arg2),
52	: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"	52	: "memory", "cr0", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
53	);	53	);
54	}	54	}
55		55
...	@@ -64,7 +64,7 @@ pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {	...	@@ -64,7 +64,7 @@ pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
64	[arg1] "{r3}" (arg1),	64	[arg1] "{r3}" (arg1),
65	[arg2] "{r4}" (arg2),	65	[arg2] "{r4}" (arg2),
66	[arg3] "{r5}" (arg3),	66	[arg3] "{r5}" (arg3),
67	: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"	67	: "memory", "cr0", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
68	);	68	);
69	}	69	}
70		70
...	@@ -80,7 +80,7 @@ pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize)	...	@@ -80,7 +80,7 @@ pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize)
80	[arg2] "{r4}" (arg2),	80	[arg2] "{r4}" (arg2),
81	[arg3] "{r5}" (arg3),	81	[arg3] "{r5}" (arg3),
82	[arg4] "{r6}" (arg4),	82	[arg4] "{r6}" (arg4),
83	: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"	83	: "memory", "cr0", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
84	);	84	);
85	}	85	}
86		86
...	@@ -97,7 +97,7 @@ pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize,	...	@@ -97,7 +97,7 @@ pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize,
97	[arg3] "{r5}" (arg3),	97	[arg3] "{r5}" (arg3),
98	[arg4] "{r6}" (arg4),	98	[arg4] "{r6}" (arg4),
99	[arg5] "{r7}" (arg5),	99	[arg5] "{r7}" (arg5),
100	: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"	100	: "memory", "cr0", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
101	);	101	);
102	}	102	}
103		103
...	@@ -123,7 +123,7 @@ pub fn syscall6(	...	@@ -123,7 +123,7 @@ pub fn syscall6(
123	[arg4] "{r6}" (arg4),	123	[arg4] "{r6}" (arg4),
124	[arg5] "{r7}" (arg5),	124	[arg5] "{r7}" (arg5),
125	[arg6] "{r8}" (arg6),	125	[arg6] "{r8}" (arg6),
126	: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"	126	: "memory", "cr0", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
127	);	127	);
128	}	128	}
129		129