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wamrc: More friendly to print help info (#2451)

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Allow wamrc to print help info like below:
```bash
wamrc --target=help
wamrc --target-abi=help
wamrc --target=<target> --cpu=help
wamrc --target=<target> --cpu=help --cpu-features=+help
```
This commit is contained in:
TianlongLiang 2023-08-16 05:28:45 +02:00 committed by GitHub
parent 0f18051e66
commit c820643b2b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 52 additions and 11 deletions
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10
core/iwasm/compilation/aot_llvm.c
View File

@ -2752,6 +2752,16 @@ aot_create_comp_context(const AOTCompData *comp_data, aot_comp_option_t option)
aot_set_last_error("create LLVM target machine failed.");
goto fail;
}
/* If only to create target machine for querying information, early stop
*/
if ((arch && !strcmp(arch, "help")) || (abi && !strcmp(abi, "help"))
|| (cpu && !strcmp(cpu, "help"))
|| (features && !strcmp(features, "+help"))) {
LOG_DEBUG(
"create LLVM target machine only for printing help info.");
goto fail;
}
}
triple = LLVMGetTargetMachineTriple(comp_ctx->target_machine);

53
wamr-compiler/main.c
View File

@ -193,6 +193,8 @@ print_help()
printf("Examples: wamrc -o test.aot test.wasm\n");
printf(" wamrc --target=i386 -o test.aot test.wasm\n");
printf(" wamrc --target=i386 --format=object -o test.o test.wasm\n");
printf(" wamrc --target-abi=help\n");
printf(" wamrc --target=x86_64 --cpu=help\n");
}
/* clang-format on */
@ -296,6 +298,12 @@ resolve_segue_flags(char *str_flags)
return segue_flags;
}
/* When print help info for target/cpu/target-abi/cpu-features, load this dummy
* wasm file content rather than from an input file, the dummy wasm file content
* is: magic header + version number */
static unsigned char dummy_wasm_file[8] = { 0x00, 0x61, 0x73, 0x6D,
0x01, 0x00, 0x00, 0x00 };
int
main(int argc, char *argv[])
{
@ -309,7 +317,7 @@ main(int argc, char *argv[])
AOTCompOption option = { 0 };
char error_buf[128];
int log_verbose_level = 2;
bool sgx_mode = false, size_level_set = false;
bool sgx_mode = false, size_level_set = false, use_dummy_wasm = false;
int exit_status = EXIT_FAILURE;
#if BH_HAS_DLFCN
const char *native_lib_list[8] = { NULL };
@ -342,21 +350,33 @@ main(int argc, char *argv[])
if (argv[0][9] == '\0')
PRINT_HELP_AND_EXIT();
option.target_arch = argv[0] + 9;
if (!strcmp(option.target_arch, "help")) {
use_dummy_wasm = true;
}
}
else if (!strncmp(argv[0], "--target-abi=", 13)) {
if (argv[0][13] == '\0')
PRINT_HELP_AND_EXIT();
option.target_abi = argv[0] + 13;
if (!strcmp(option.target_abi, "help")) {
use_dummy_wasm = true;
}
}
else if (!strncmp(argv[0], "--cpu=", 6)) {
if (argv[0][6] == '\0')
PRINT_HELP_AND_EXIT();
option.target_cpu = argv[0] + 6;
if (!strcmp(option.target_cpu, "help")) {
use_dummy_wasm = true;
}
}
else if (!strncmp(argv[0], "--cpu-features=", 15)) {
if (argv[0][15] == '\0')
PRINT_HELP_AND_EXIT();
option.cpu_features = argv[0] + 15;
if (!strcmp(option.cpu_features, "+help")) {
use_dummy_wasm = true;
}
}
else if (!strncmp(argv[0], "--opt-level=", 12)) {
if (argv[0][12] == '\0')
@ -516,7 +536,7 @@ main(int argc, char *argv[])
PRINT_HELP_AND_EXIT();
}
if (argc == 0 || !out_file_name)
if (!use_dummy_wasm && (argc == 0 || !out_file_name))
PRINT_HELP_AND_EXIT();
if (!size_level_set) {
@ -544,11 +564,13 @@ main(int argc, char *argv[])
option.is_sgx_platform = true;
}
wasm_file_name = argv[0];
if (!use_dummy_wasm) {
wasm_file_name = argv[0];
if (!strcmp(wasm_file_name, out_file_name)) {
printf("Error: input file and output file are the same");
return -1;
if (!strcmp(wasm_file_name, out_file_name)) {
printf("Error: input file and output file are the same");
return -1;
}
}
memset(&init_args, 0, sizeof(RuntimeInitArgs));
@ -574,10 +596,17 @@ main(int argc, char *argv[])
bh_print_time("Begin to load wasm file");
/* load WASM byte buffer from WASM bin file */
if (!(wasm_file =
(uint8 *)bh_read_file_to_buffer(wasm_file_name, &wasm_file_size)))
goto fail1;
if (use_dummy_wasm) {
/* load WASM byte buffer from dummy buffer */
wasm_file_size = sizeof(dummy_wasm_file);
wasm_file = dummy_wasm_file;
}
else {
/* load WASM byte buffer from WASM bin file */
if (!(wasm_file = (uint8 *)bh_read_file_to_buffer(wasm_file_name,
&wasm_file_size)))
goto fail1;
}
if (get_package_type(wasm_file, wasm_file_size) != Wasm_Module_Bytecode) {
printf("Invalid file type: expected wasm file but got other\n");
@ -659,7 +688,9 @@ fail3:
fail2:
/* free the file buffer */
wasm_runtime_free(wasm_file);
if (!use_dummy_wasm) {
wasm_runtime_free(wasm_file);
}
fail1:
#if BH_HAS_DLFCN