diff options
Diffstat (limited to 'bxgen.c')
| -rwxr-xr-x | bxgen.c | 16 |
1 files changed, 10 insertions, 6 deletions
@@ -1046,6 +1046,7 @@ void unit_write(Pool *pool, i64 unit, u16 target, i64 io_out, void *io_user_data // // Online assembler // https://defuse.ca/online-x86-assembler.htm + // https://shell-storm.org/online/Online-Assembler-and-Disassembler/ BX_ASSERT(pool != NULL && pool->entities != NULL); BX_ASSERT(pool->entities[unit].is_enabled); @@ -1089,11 +1090,10 @@ void unit_write(Pool *pool, i64 unit, u16 target, i64 io_out, void *io_user_data #define WRITE_4(x) io_write( io_out, 4, &(u32) { x }, io_user_data ) #define WRITE_8(x) io_write( io_out, 8, &(u64) { x }, io_user_data ) - u8 code[16] = { - 0xb8, // mov rax - 0x3c, 0, 0, 0, // 60 // exit - 0x48, 0x31, 0xff, // xor rdx, rdx // rdx = 0 - 0x0f, 0x05, // syscall + u8 code[32] = { + 0xb8, 0x3c, 0x00, 0x00, 0x00, // mov eax, 60 + 0xbf, 0x2a, 0x00, 0x00, 0x00, // mov edi, 42 + 0x0f, 0x05, // syscall }; u64 code_offset = bx_align(ELF_HEADER_SIZE + ELF_PROGRAM_HEADER_SIZE, X86_64_ALIGNMENT); @@ -2078,7 +2078,7 @@ void bx_assert(b8 condition, c8 const *message, u32 line, c8 const *file) { fflush(stdout); fprintf(stderr, "\r\x1b[31mASSERTION:\x1b[37m `\x1b[33m%s\x1b[37m` is false in \x1b[36m%s:%d\x1b[37m\n", message, file, line); - abort(); + exit(-1); } // IO dispatch procedure @@ -2281,6 +2281,10 @@ int main(int argc, char **argv) { printf("Writing ELF x86_64 executable...\n"); u_elf_x86_64(u, "test_foo"); + i32 ret = system("./test_foo"); + + BX_ASSERT(WEXITSTATUS(ret) == 42); + printf("\nBye!\n"); return 0; } |