| // Copyright 2020 The Fuchsia Authors |
| // |
| // Use of this source code is governed by a MIT-style |
| // license that can be found in the LICENSE file or at |
| // https://opensource.org/licenses/MIT |
| |
| // This is linked into some minimal test phys executables that are run directly |
| // as raw binary images. It provides the section name that phys.ld places |
| // first, with a trivial trampoline to call _start. This works with any "raw |
| // binary" booting scheme that just jumps to the start of the image, as long as |
| // the only argument register the startup code needs is the one that start.S |
| // passes along to PhysMain. |
| |
| .section .boot.header, "ax", %progbits |
| |
| #if defined(__aarch64__) |
| b _start |
| #elif defined(__x86_64__) || defined(__i386__) |
| jmp _start |
| #elif defined(__riscv) |
| j _start |
| #else |
| #error "what machine??" |
| #endif |
