authorgravatar for robin@voetter.nlRobin Voetter <robin@voetter.nl> 2019-08-28 17:41:49+02:00
committergravatar for robin@voetter.nlRobin Voetter <robin@voetter.nl> 2019-08-28 17:41:49+02:00
log50c37c75d1208bb8a0bf5b2792e4a1d69d6f7110
treebfce128e2c21fcfee04027d01649905bb08957fe
parent32f4606cece09b6bcf4f553c06c3aaab34f784c6

add arm32 syscall conventions

2 files changed, 81 insertions(+), 0 deletions(-)

std/os/linux.zig+1
...@@ -17,6 +17,7 @@ pub const is_the_target = builtin.os == .linux;...@@ -17,6 +17,7 @@ pub const is_the_target = builtin.os == .linux;
17pub usingnamespace switch (builtin.arch) {17pub usingnamespace switch (builtin.arch) {
18 .x86_64 => @import("linux/x86_64.zig"),18 .x86_64 => @import("linux/x86_64.zig"),
19 .aarch64 => @import("linux/arm64.zig"),19 .aarch64 => @import("linux/arm64.zig"),
20 .arm => @import("linux/arm-eabi.zig"),
20 else => struct {},21 else => struct {},
21};22};
22pub usingnamespace @import("bits.zig");23pub usingnamespace @import("bits.zig");
std/os/linux/arm-eabi.zig created+80
...@@ -0,0 +1,80 @@
1pub fn syscall0(number: usize) usize {
2 return asm volatile ("svc #0"
3 : [ret] "={r0}" (-> usize)
4 : [number] "{r7}" (number)
5 );
6}
7
8pub fn syscall1(number: usize, arg1: usize) usize {
9 return asm volatile ("svc #0"
10 : [ret] "={r0}" (-> usize)
11 : [number] "{r7}" (number),
12 [arg1] "{r0}" (arg1)
13 );
14}
15
16pub fn syscall2(number: usize, arg1: usize, arg2: usize) usize {
17 return asm volatile ("svc #0"
18 : [ret] "={r0}" (-> usize)
19 : [number] "{r7}" (number),
20 [arg1] "{r0}" (arg1),
21 [arg2] "{r1}" (arg2)
22 );
23}
24
25pub fn syscall3(number: usize, arg1: usize, arg2: usize, arg3: usize) usize {
26 return asm volatile ("svc #0"
27 : [ret] "={r0}" (-> usize)
28 : [number] "{r7}" (number),
29 [arg1] "{r0}" (arg1),
30 [arg2] "{r1}" (arg2),
31 [arg3] "{r2}" (arg3)
32 );
33}
34
35pub fn syscall4(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
36 return asm volatile ("svc #0"
37 : [ret] "={r0}" (-> usize)
38 : [number] "{r7}" (number),
39 [arg1] "{r0}" (arg1),
40 [arg2] "{r1}" (arg2),
41 [arg3] "{r2}" (arg3),
42 [arg4] "{r3}" (arg4)
43 );
44}
45
46pub fn syscall5(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
47 return asm volatile ("svc #0"
48 : [ret] "={r0}" (-> usize)
49 : [number] "{r7}" (number),
50 [arg1] "{r0}" (arg1),
51 [arg2] "{r1}" (arg2),
52 [arg3] "{r2}" (arg3),
53 [arg4] "{r3}" (arg4),
54 [arg5] "{r4}" (arg5)
55 );
56}
57
58pub fn syscall6(
59 number: usize,
60 arg1: usize,
61 arg2: usize,
62 arg3: usize,
63 arg4: usize,
64 arg5: usize,
65 arg6: usize,
66) usize {
67 return asm volatile ("svc #0"
68 : [ret] "={r0}" (-> usize)
69 : [number] "{r7}" (number),
70 [arg1] "{r0}" (arg1),
71 [arg2] "{r1}" (arg2),
72 [arg3] "{r2}" (arg3),
73 [arg4] "{r3}" (arg4),
74 [arg5] "{r4}" (arg5),
75 [arg6] "{r5}" (arg6)
76 );
77}
78
79/// This matches the libc clone function.
80pub extern fn clone(func: extern fn (arg: usize) u8, stack: usize, flags: u32, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;