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-rw-r--r--std/syscall.zig169
1 files changed, 149 insertions, 20 deletions
diff --git a/std/syscall.zig b/std/syscall.zig
index a99839ded6..669fb2b8c0 100644
--- a/std/syscall.zig
+++ b/std/syscall.zig
@@ -1,17 +1,63 @@
-// this file is specific to x86_64
-
-const SYS_read = 0;
-const SYS_write = 1;
-const SYS_mmap = 9;
-const SYS_munmap = 11;
-const SYS_rt_sigprocmask = 14;
-const SYS_exit = 60;
-const SYS_kill = 62;
-const SYS_getgid = 104;
-const SYS_gettid = 186;
-const SYS_tkill = 200;
-const SYS_tgkill = 234;
-const SYS_getrandom = 318;
+const SYS_read = switch (@compile_var("arch")) {
+ x86_64 => 0,
+ i386 => 3,
+ else => unreachable{},
+};
+const SYS_write = switch (@compile_var("arch")) {
+ x86_64 => 1,
+ i386 => 4,
+ else => unreachable{},
+};
+const SYS_mmap = switch (@compile_var("arch")) {
+ x86_64 => 9,
+ i386 => 90,
+ else => unreachable{},
+};
+const SYS_munmap = switch (@compile_var("arch")) {
+ x86_64 => 11,
+ i386 => 91,
+ else => unreachable{},
+};
+const SYS_rt_sigprocmask = switch (@compile_var("arch")) {
+ x86_64 => 14,
+ i386 => 175,
+ else => unreachable{},
+};
+const SYS_exit = switch (@compile_var("arch")) {
+ x86_64 => 60,
+ i386 => 1,
+ else => unreachable{},
+};
+const SYS_kill = switch (@compile_var("arch")) {
+ x86_64 => 62,
+ i386 => 37,
+ else => unreachable{},
+};
+const SYS_getgid = switch (@compile_var("arch")) {
+ x86_64 => 104,
+ i386 => 47,
+ else => unreachable{},
+};
+const SYS_gettid = switch (@compile_var("arch")) {
+ x86_64 => 186,
+ i386 => 224,
+ else => unreachable{},
+};
+const SYS_tkill = switch (@compile_var("arch")) {
+ x86_64 => 200,
+ i386 => 238,
+ else => unreachable{},
+};
+const SYS_tgkill = switch (@compile_var("arch")) {
+ x86_64 => 234,
+ i386 => 270,
+ else => unreachable{},
+};
+const SYS_getrandom = switch (@compile_var("arch")) {
+ x86_64 => 318,
+ i386 => 355,
+ else => unreachable{},
+};
pub const MMAP_PROT_NONE = 0;
pub const MMAP_PROT_READ = 1;
@@ -63,14 +109,45 @@ const SIG_BLOCK = 0;
const SIG_UNBLOCK = 1;
const SIG_SETMASK = 2;
-fn syscall0(number: isize) -> isize {
+const syscall0 = switch (@compile_var("arch")) {
+ x86_64 => x86_64_syscall0,
+ i386 => i386_syscall0,
+ else => unreachable{},
+};
+const syscall1 = switch (@compile_var("arch")) {
+ x86_64 => x86_64_syscall1,
+ i386 => i386_syscall1,
+ else => unreachable{},
+};
+const syscall2 = switch (@compile_var("arch")) {
+ x86_64 => x86_64_syscall2,
+ i386 => i386_syscall2,
+ else => unreachable{},
+};
+const syscall3 = switch (@compile_var("arch")) {
+ x86_64 => x86_64_syscall3,
+ i386 => i386_syscall3,
+ else => unreachable{},
+};
+const syscall4 = switch (@compile_var("arch")) {
+ x86_64 => x86_64_syscall4,
+ i386 => i386_syscall4,
+ else => unreachable{},
+};
+const syscall6 = switch (@compile_var("arch")) {
+ x86_64 => x86_64_syscall6,
+ i386 => i386_syscall6,
+ else => unreachable{},
+};
+
+fn x86_64_syscall0(number: isize) -> isize {
asm volatile ("syscall"
: [ret] "={rax}" (-> isize)
: [number] "{rax}" (number)
: "rcx", "r11")
}
-fn syscall1(number: isize, arg1: isize) -> isize {
+fn x86_64_syscall1(number: isize, arg1: isize) -> isize {
asm volatile ("syscall"
: [ret] "={rax}" (-> isize)
: [number] "{rax}" (number),
@@ -78,7 +155,7 @@ fn syscall1(number: isize, arg1: isize) -> isize {
: "rcx", "r11")
}
-fn syscall2(number: isize, arg1: isize, arg2: isize) -> isize {
+fn x86_64_syscall2(number: isize, arg1: isize, arg2: isize) -> isize {
asm volatile ("syscall"
: [ret] "={rax}" (-> isize)
: [number] "{rax}" (number),
@@ -87,7 +164,7 @@ fn syscall2(number: isize, arg1: isize, arg2: isize) -> isize {
: "rcx", "r11")
}
-fn syscall3(number: isize, arg1: isize, arg2: isize, arg3: isize) -> isize {
+fn x86_64_syscall3(number: isize, arg1: isize, arg2: isize, arg3: isize) -> isize {
asm volatile ("syscall"
: [ret] "={rax}" (-> isize)
: [number] "{rax}" (number),
@@ -97,7 +174,7 @@ fn syscall3(number: isize, arg1: isize, arg2: isize, arg3: isize) -> isize {
: "rcx", "r11")
}
-fn syscall4(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize) -> isize {
+fn x86_64_syscall4(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize) -> isize {
asm volatile ("syscall"
: [ret] "={rax}" (-> isize)
: [number] "{rax}" (number),
@@ -108,7 +185,7 @@ fn syscall4(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize) -
: "rcx", "r11")
}
-fn syscall6(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize, arg5: isize, arg6: isize) -> isize {
+fn x86_64_syscall6(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize, arg5: isize, arg6: isize) -> isize {
asm volatile ("syscall"
: [ret] "={rax}" (-> isize)
: [number] "{rax}" (number),
@@ -121,6 +198,58 @@ fn syscall6(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize, a
: "rcx", "r11")
}
+fn i386_syscall0(number: isize) -> isize {
+ asm volatile ("int $0x80"
+ : [ret] "={eax}" (-> isize)
+ : [number] "{eax}" (number))
+}
+
+fn i386_syscall1(number: isize, arg1: isize) -> isize {
+ asm volatile ("int $0x80"
+ : [ret] "={eax}" (-> isize)
+ : [number] "{eax}" (number),
+ [arg1] "{ebx}" (arg1))
+}
+
+fn i386_syscall2(number: isize, arg1: isize, arg2: isize) -> isize {
+ asm volatile ("int $0x80"
+ : [ret] "={eax}" (-> isize)
+ : [number] "{eax}" (number),
+ [arg1] "{ebx}" (arg1),
+ [arg2] "{ecx}" (arg2))
+}
+
+fn i386_syscall3(number: isize, arg1: isize, arg2: isize, arg3: isize) -> isize {
+ asm volatile ("int $0x80"
+ : [ret] "={eax}" (-> isize)
+ : [number] "{eax}" (number),
+ [arg1] "{ebx}" (arg1),
+ [arg2] "{ecx}" (arg2),
+ [arg3] "{edx}" (arg3))
+}
+
+fn i386_syscall4(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize) -> isize {
+ asm volatile ("int $0x80"
+ : [ret] "={eax}" (-> isize)
+ : [number] "{eax}" (number),
+ [arg1] "{ebx}" (arg1),
+ [arg2] "{ecx}" (arg2),
+ [arg3] "{edx}" (arg3),
+ [arg4] "{esi}" (arg4))
+}
+
+fn i386_syscall6(number: isize, arg1: isize, arg2: isize, arg3: isize, arg4: isize, arg5: isize, arg6: isize) -> isize {
+ asm volatile ("int $0x80"
+ : [ret] "={eax}" (-> isize)
+ : [number] "{eax}" (number),
+ [arg1] "{ebx}" (arg1),
+ [arg2] "{ecx}" (arg2),
+ [arg3] "{edx}" (arg3),
+ [arg4] "{esi}" (arg4),
+ [arg5] "{edi}" (arg5),
+ [arg6] "{ebp}" (arg6))
+}
+
pub fn mmap(address: isize, length: isize, prot: isize, flags: isize, fd: isize, offset: isize) -> isize {
syscall6(SYS_mmap, address, length, prot, flags, fd, offset)
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-28 00:42:25 +0000