diff options
Diffstat (limited to 'std/bootstrap.zig')
| -rw-r--r-- | std/bootstrap.zig | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/std/bootstrap.zig b/std/bootstrap.zig index 75edc29482..091d7c77ca 100644 --- a/std/bootstrap.zig +++ b/std/bootstrap.zig @@ -9,9 +9,19 @@ var env: &&u8 = undefined; #attribute("naked") export fn _start() -> unreachable { - argc = asm("mov (%%rsp), %[argc]": [argc] "=r" (-> isize)); - argv = asm("lea 0x8(%%rsp), %[argv]": [argv] "=r" (-> &&u8)); - env = asm("lea 0x10(%%rsp,%%rdi,8), %[env]": [env] "=r" (-> &&u8)); + switch (@compile_var("arch")) { + x86_64 => { + argc = asm("mov (%%rsp), %[argc]": [argc] "=r" (-> isize)); + argv = asm("lea 0x8(%%rsp), %[argv]": [argv] "=r" (-> &&u8)); + env = asm("lea 0x10(%%rsp,[argc],8), %[env]": [env] "=r" (-> &&u8): [argc] "r" (argc)); + }, + i386 => { + argc = asm("mov (%%esp), %[argc]": [argc] "=r" (-> isize)); + argv = asm("lea 0x4(%%esp), %[argv]": [argv] "=r" (-> &&u8)); + env = asm("lea 0x8(%%esp,%[argc],4), %[env]": [env] "=r" (-> &&u8): [argc] "r" (argc)); + }, + else => unreachable{}, + } call_main() } |