Commit f3eacec226661c11357102dbca5d888817aafbd7 | zig

author	Alex Rønne Petersen <alex@alexrp.com> 2025-10-18 02:09:04+02:00
committer	Alex Rønne Petersen <alex@alexrp.com> 2025-10-18 11:16:31+02:00
log	f3eacec226661c11357102dbca5d888817aafbd7
tree	a9615c6d7d5f87771f4963f66922372ece08e506
parent	b8d776928a0b0092830ee632b1c57c8bcf9391ea
signature	Signed by SSH key SHA256:7B/LJ7bpR1eX8aCXSr4mtd5M45VMPKcx9zY8e95b5QM

std.os.linux: fix some issues in mipsn32 inline asm

ref https://github.com/ziglang/zig/issues/22189

1 files changed, 16 insertions(+), 18 deletions(-)

lib
- std
  - os
    linux
    mipsn32.zig

lib/std/os/linux/mipsn32.zig+16-18

...	...	@@ -1,5 +1,3 @@
1		// TODO: A lot of this file is very likely wrong.
2
3	1	const builtin = @import("builtin");
4	2	const std = @import("../../std.zig");
5	3	const SYS = std.os.linux.SYS;
...	...	@@ -9,7 +7,7 @@ pub fn syscall0(number: SYS) u32 {
9	7	\\ syscall
10	8	\\ beq $a3, $zero, 1f
11	9	\\ blez $v0, 1f
12		\\ dsubu $v0, $zero, $v0
	10	\\ subu $v0, $zero, $v0
13	11	\\1:
14	12	: [ret] "={$2}" (-> u32),
15	13	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -21,7 +19,7 @@ pub fn syscall_pipe(fd: *[2]i32) u32 {
21	19	\\ syscall
22	20	\\ beq $a3, $zero, 1f
23	21	\\ blez $v0, 2f
24		\\ dsubu $v0, $zero, $v0
	22	\\ subu $v0, $zero, $v0
25	23	\\ b 2f
26	24	\\1:
27	25	\\ sw $v0, 0($a0)
...	...	@@ -38,7 +36,7 @@ pub fn syscall1(number: SYS, arg1: u32) u32 {
38	36	\\ syscall
39	37	\\ beq $a3, $zero, 1f
40	38	\\ blez $v0, 1f
41		\\ dsubu $v0, $zero, $v0
	39	\\ subu $v0, $zero, $v0
42	40	\\1:
43	41	: [ret] "={$2}" (-> u32),
44	42	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -51,7 +49,7 @@ pub fn syscall2(number: SYS, arg1: u32, arg2: u32) u32 {
51	49	\\ syscall
52	50	\\ beq $a3, $zero, 1f
53	51	\\ blez $v0, 1f
54		\\ dsubu $v0, $zero, $v0
	52	\\ subu $v0, $zero, $v0
55	53	\\1:
56	54	: [ret] "={$2}" (-> u32),
57	55	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -65,7 +63,7 @@ pub fn syscall3(number: SYS, arg1: u32, arg2: u32, arg3: u32) u32 {
65	63	\\ syscall
66	64	\\ beq $a3, $zero, 1f
67	65	\\ blez $v0, 1f
68		\\ dsubu $v0, $zero, $v0
	66	\\ subu $v0, $zero, $v0
69	67	\\1:
70	68	: [ret] "={$2}" (-> u32),
71	69	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -80,7 +78,7 @@ pub fn syscall4(number: SYS, arg1: u32, arg2: u32, arg3: u32, arg4: u32) u32 {
80	78	\\ syscall
81	79	\\ beq $a3, $zero, 1f
82	80	\\ blez $v0, 1f
83		\\ dsubu $v0, $zero, $v0
	81	\\ subu $v0, $zero, $v0
84	82	\\1:
85	83	: [ret] "={$2}" (-> u32),
86	84	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -96,7 +94,7 @@ pub fn syscall5(number: SYS, arg1: u32, arg2: u32, arg3: u32, arg4: u32, arg5: u
96	94	\\ syscall
97	95	\\ beq $a3, $zero, 1f
98	96	\\ blez $v0, 1f
99		\\ dsubu $v0, $zero, $v0
	97	\\ subu $v0, $zero, $v0
100	98	\\1:
101	99	: [ret] "={$2}" (-> u32),
102	100	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -121,7 +119,7 @@ pub fn syscall6(
121	119	\\ syscall
122	120	\\ beq $a3, $zero, 1f
123	121	\\ blez $v0, 1f
124		\\ dsubu $v0, $zero, $v0
	122	\\ subu $v0, $zero, $v0
125	123	\\1:
126	124	: [ret] "={$2}" (-> u32),
127	125	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -148,7 +146,7 @@ pub fn syscall7(
148	146	\\ syscall
149	147	\\ beq $a3, $zero, 1f
150	148	\\ blez $v0, 1f
151		\\ dsubu $v0, $zero, $v0
	149	\\ subu $v0, $zero, $v0
152	150	\\1:
153	151	: [ret] "={$2}" (-> u32),
154	152	: [number] "{$2}" (@intFromEnum(number)),
...	...	@@ -171,20 +169,20 @@ pub fn clone() callconv(.naked) u32 {
171	169	asm volatile (
172	170	\\ # Save function pointer and argument pointer on new thread stack
173	171	\\ and $a1, $a1, -16
174		\\ dsubu $a1, $a1, 16
175		\\ sd $a0, 0($a1)
176		\\ sd $a3, 8($a1)
	172	\\ subu $a1, $a1, 16
	173	\\ sw $a0, 0($a1)
	174	\\ sw $a3, 4($a1)
177	175	\\
178	176	\\ # Shuffle (fn,sp,fl,arg,ptid,tls,ctid) to (fl,sp,ptid,tls,ctid)
179	177	\\ move $a0, $a2
180	178	\\ move $a2, $a4
181	179	\\ move $a3, $a5
182	180	\\ move $a4, $a6
183		\\ li $v0, 5055 # SYS_clone
	181	\\ li $v0, 6055 # SYS_clone
184	182	\\ syscall
185	183	\\ beq $a3, $zero, 1f
186	184	\\ blez $v0, 2f
187		\\ dsubu $v0, $zero, $v0
	185	\\ subu $v0, $zero, $v0
188	186	\\ b 2f
189	187	\\1:
190	188	\\ beq $v0, $zero, 3f
...	...	@@ -200,11 +198,11 @@ pub fn clone() callconv(.naked) u32 {
200	198	\\ move $ra, $zero
201	199	\\
202	200	\\ ld $t9, 0($sp)
203		\\ ld $a0, 8($sp)
	201	\\ ld $a0, 4($sp)
204	202	\\ jalr $t9
205	203	\\
206	204	\\ move $a0, $v0
207		\\ li $v0, 5058 # SYS_exit
	205	\\ li $v0, 6058 # SYS_exit
208	206	\\ syscall
209	207	);
210	208	}