diff options
| -rw-r--r-- | test cases/nasm/2 asm language/hello.asm | 40 | ||||
| -rw-r--r-- | test cases/nasm/2 asm language/meson.build | 4 |
2 files changed, 29 insertions, 15 deletions
diff --git a/test cases/nasm/2 asm language/hello.asm b/test cases/nasm/2 asm language/hello.asm index b153c8c..1e3e8fd 100644 --- a/test cases/nasm/2 asm language/hello.asm +++ b/test cases/nasm/2 asm language/hello.asm @@ -1,21 +1,31 @@ -%include "config.asm" - -global main -extern puts +; hello.asm a first program for nasm for Linux, Intel, gcc +; +; assemble: nasm -f elf -l hello.lst hello.asm +; link: gcc -o hello hello.o +; run: hello +; output is: Hello World -section .data - hi db 'Hello, World', 0 +%include "config.asm" %ifdef FOO %define RETVAL HELLO %endif -section .text -main: - push rbp - lea rdi, [rel hi] - call puts wrt ..plt - pop rbp - mov ebx,RETVAL - mov eax,1 - int 0x80 + SECTION .data ; data section +msg: db "Hello World",10 ; the string to print, 10=cr +len: equ $-msg ; "$" means "here" + ; len is a value, not an address + + SECTION .text ; code section + global main ; make label available to linker +main: ; standard gcc entry point + + mov edx,len ; arg3, length of string to print + mov ecx,msg ; arg2, pointer to string + mov ebx,1 ; arg1, where to write, screen + mov eax,4 ; write sysout command to int 80 hex + int 0x80 ; interrupt 80 hex, call kernel + + mov ebx,RETVAL ; exit code, 0=normal + mov eax,1 ; exit command to kernel + int 0x80 ; interrupt 80 hex, call kernel diff --git a/test cases/nasm/2 asm language/meson.build b/test cases/nasm/2 asm language/meson.build index e1ef10a..f6fbff8 100644 --- a/test cases/nasm/2 asm language/meson.build +++ b/test cases/nasm/2 asm language/meson.build @@ -17,7 +17,11 @@ config_file = configure_file( output_format: 'nasm', ) +cc = meson.get_compiler('c') +link_args = cc.get_supported_link_arguments(['-no-pie']) + exe = executable('hello', 'hello.asm', nasm_args: '-DFOO', + link_args: link_args, ) test('hello', exe) |