diff --git a/std/os/linux.zig b/std/os/linux.zig index 053f30d265..ba679387dd 100644 --- a/std/os/linux.zig +++ b/std/os/linux.zig @@ -17,6 +17,7 @@ pub const is_the_target = builtin.os == .linux; pub usingnamespace switch (builtin.arch) { .x86_64 => @import("linux/x86_64.zig"), .aarch64 => @import("linux/arm64.zig"), + .arm => @import("linux/arm-eabi.zig"), else => struct {}, }; pub usingnamespace @import("bits.zig"); diff --git a/std/os/linux/arm-eabi.zig b/std/os/linux/arm-eabi.zig new file mode 100644 index 0000000000..3b8eb055d5 --- /dev/null +++ b/std/os/linux/arm-eabi.zig @@ -0,0 +1,80 @@ +pub fn syscall0(number: usize) usize { + return asm volatile ("svc #0" + : [ret] "={r0}" (-> usize) + : [number] "{r7}" (number) + ); +} + +pub fn syscall1(number: usize, arg1: usize) usize { + return asm volatile ("svc #0" + : [ret] "={r0}" (-> usize) + : [number] "{r7}" (number), + [arg1] "{r0}" (arg1) + ); +} + +pub fn syscall2(number: usize, arg1: usize, arg2: usize) usize { + return asm volatile ("svc #0" + : [ret] "={r0}" (-> usize) + : [number] "{r7}" (number), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2) + ); +} + +pub fn syscall3(number: usize, arg1: usize, arg2: usize, arg3: usize) usize { + return asm volatile ("svc #0" + : [ret] "={r0}" (-> usize) + : [number] "{r7}" (number), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3) + ); +} + +pub fn syscall4(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize { + return asm volatile ("svc #0" + : [ret] "={r0}" (-> usize) + : [number] "{r7}" (number), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3), + [arg4] "{r3}" (arg4) + ); +} + +pub fn syscall5(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize { + return asm volatile ("svc #0" + : [ret] "={r0}" (-> usize) + : [number] "{r7}" (number), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3), + [arg4] "{r3}" (arg4), + [arg5] "{r4}" (arg5) + ); +} + +pub fn syscall6( + number: usize, + arg1: usize, + arg2: usize, + arg3: usize, + arg4: usize, + arg5: usize, + arg6: usize, +) usize { + return asm volatile ("svc #0" + : [ret] "={r0}" (-> usize) + : [number] "{r7}" (number), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3), + [arg4] "{r3}" (arg4), + [arg5] "{r4}" (arg5), + [arg6] "{r5}" (arg6) + ); +} + +/// This matches the libc clone function. +pub extern fn clone(func: extern fn (arg: usize) u8, stack: usize, flags: u32, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;