46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
const std = #import("std");
|
|
const builtin = #import("builtin");
|
|
comptime {
|
|
if (builtin.link_libc) {
|
|
#export(main);
|
|
} else {
|
|
#export(_start);
|
|
}
|
|
}
|
|
|
|
const _start = fn naked cc(.c) () noreturn {
|
|
#asm(`
|
|
xor ebp, ebp;
|
|
mov rdi, rsp;
|
|
and rsp, 0xfffffffffffffff0;
|
|
call {start};
|
|
`);
|
|
}
|
|
|
|
var argument_count: usize = 0;
|
|
var argument_values: [&]const [&:0]const u8 = undefined;
|
|
var environment_values: [&:null]const ?[&:null]const u8 = undefined;
|
|
|
|
const start = fn cc(.c) (argc_argv_address: usize) noreturn {
|
|
var argument_address_iterator = argc_argv_address;
|
|
const argument_count_ptr: &usize = #cast(argument_address_iterator);
|
|
argument_count = argument_count_ptr.@;
|
|
argument_address_iterator += #size(usize);
|
|
argument_values = #cast(argument_address_iterator);
|
|
const argv = argument_values;
|
|
argument_address_iterator += #size(usize) * (argument_count + 1);
|
|
environment_values = #cast(argument_address_iterator);
|
|
const env = environment_values;
|
|
#import("root").main() catch std.os.exit(1);
|
|
std.os.exit(0);
|
|
}
|
|
|
|
const main = fn cc(.c) (argc: s32, argv: [&]const [&:0]const u8, env: [&:null]const ?[&:null]const u8) s32 {
|
|
const argc_u: u32 = #cast(argc);
|
|
argument_count = argc_u;
|
|
argument_values = argv;
|
|
environment_values = env;
|
|
#import("root").main() catch return 1;
|
|
return 0;
|
|
}
|