/* Llvm.llmodule -> CodeGenFileType.t -> TargetMachine.t ->
Llvm.llmemorybuffer */
CAMLprim LLVMMemoryBufferRef llvm_targetmachine_emit_to_memory_buffer(
LLVMModuleRef Module, value FileType,
value Machine) {
char *ErrorMessage;
LLVMMemoryBufferRef Buffer;
if(LLVMTargetMachineEmitToMemoryBuffer(TargetMachine_val(Machine), Module,
Int_val(FileType), &ErrorMessage,
&Buffer)) {
llvm_raise(*caml_named_value("Llvm_target.Error"), ErrorMessage);
}
return Buffer;
}
/**
* Compile an LLVM module to machine code.
*
* @returns 0 for success, 1 for failure
*/
unsigned radeon_llvm_compile(LLVMModuleRef M, struct radeon_shader_binary *binary,
const char *gpu_family, unsigned dump, LLVMTargetMachineRef tm)
{
char cpu[CPU_STRING_LEN];
char fs[FS_STRING_LEN];
char *err;
bool dispose_tm = false;
LLVMContextRef llvm_ctx;
unsigned rval = 0;
LLVMMemoryBufferRef out_buffer;
unsigned buffer_size;
const char *buffer_data;
char triple[TRIPLE_STRING_LEN];
LLVMBool mem_err;
if (!tm) {
strncpy(triple, "r600--", TRIPLE_STRING_LEN);
LLVMTargetRef target = radeon_llvm_get_r600_target(triple);
if (!target) {
return 1;
}
strncpy(cpu, gpu_family, CPU_STRING_LEN);
memset(fs, 0, sizeof(fs));
if (dump) {
strncpy(fs, "+DumpCode", FS_STRING_LEN);
}
tm = LLVMCreateTargetMachine(target, triple, cpu, fs,
LLVMCodeGenLevelDefault, LLVMRelocDefault,
LLVMCodeModelDefault);
dispose_tm = true;
}
if (dump) {
LLVMDumpModule(M);
}
/* Setup Diagnostic Handler*/
llvm_ctx = LLVMGetModuleContext(M);
#if HAVE_LLVM >= 0x0305
LLVMContextSetDiagnosticHandler(llvm_ctx, radeonDiagnosticHandler, &rval);
#endif
rval = 0;
/* Compile IR*/
mem_err = LLVMTargetMachineEmitToMemoryBuffer(tm, M, LLVMObjectFile, &err,
&out_buffer);
/* Process Errors/Warnings */
if (mem_err) {
fprintf(stderr, "%s: %s", __FUNCTION__, err);
FREE(err);
LLVMDisposeTargetMachine(tm);
return 1;
}
if (0 != rval) {
fprintf(stderr, "%s: Processing Diag Flag\n", __FUNCTION__);
}
/* Extract Shader Code*/
buffer_size = LLVMGetBufferSize(out_buffer);
buffer_data = LLVMGetBufferStart(out_buffer);
radeon_elf_read(buffer_data, buffer_size, binary, dump);
/* Clean up */
LLVMDisposeMemoryBuffer(out_buffer);
if (dispose_tm) {
LLVMDisposeTargetMachine(tm);
}
return rval;
}
/**
* Compile an LLVM module to machine code.
*
* @returns 0 for success, 1 for failure
*/
unsigned radeon_llvm_compile(LLVMModuleRef M, struct radeon_llvm_binary *binary,
const char * gpu_family, unsigned dump) {
LLVMTargetRef target;
LLVMTargetMachineRef tm;
char cpu[CPU_STRING_LEN];
char fs[FS_STRING_LEN];
char *err;
LLVMMemoryBufferRef out_buffer;
unsigned buffer_size;
const char *buffer_data;
char triple[TRIPLE_STRING_LEN];
char *elf_buffer;
Elf *elf;
Elf_Scn *section = NULL;
size_t section_str_index;
LLVMBool r;
init_r600_target();
target = get_r600_target();
if (!target) {
return 1;
}
strncpy(cpu, gpu_family, CPU_STRING_LEN);
memset(fs, 0, sizeof(fs));
if (dump) {
LLVMDumpModule(M);
strncpy(fs, "+DumpCode", FS_STRING_LEN);
}
strncpy(triple, "r600--", TRIPLE_STRING_LEN);
tm = LLVMCreateTargetMachine(target, triple, cpu, fs,
LLVMCodeGenLevelDefault, LLVMRelocDefault,
LLVMCodeModelDefault);
r = LLVMTargetMachineEmitToMemoryBuffer(tm, M, LLVMObjectFile, &err,
&out_buffer);
if (r) {
fprintf(stderr, "%s", err);
FREE(err);
return 1;
}
buffer_size = LLVMGetBufferSize(out_buffer);
buffer_data = LLVMGetBufferStart(out_buffer);
/* One of the libelf implementations
* (http://www.mr511.de/software/english.htm) requires calling
* elf_version() before elf_memory().
*/
elf_version(EV_CURRENT);
elf_buffer = MALLOC(buffer_size);
memcpy(elf_buffer, buffer_data, buffer_size);
elf = elf_memory(elf_buffer, buffer_size);
elf_getshdrstrndx(elf, §ion_str_index);
binary->disassembled = 0;
while ((section = elf_nextscn(elf, section))) {
const char *name;
Elf_Data *section_data = NULL;
GElf_Shdr section_header;
if (gelf_getshdr(section, §ion_header) != §ion_header) {
fprintf(stderr, "Failed to read ELF section header\n");
return 1;
}
name = elf_strptr(elf, section_str_index, section_header.sh_name);
if (!strcmp(name, ".text")) {
section_data = elf_getdata(section, section_data);
binary->code_size = section_data->d_size;
binary->code = MALLOC(binary->code_size * sizeof(unsigned char));
memcpy(binary->code, section_data->d_buf, binary->code_size);
} else if (!strcmp(name, ".AMDGPU.config")) {
section_data = elf_getdata(section, section_data);
binary->config_size = section_data->d_size;
binary->config = MALLOC(binary->config_size * sizeof(unsigned char));
memcpy(binary->config, section_data->d_buf, binary->config_size);
} else if (dump && !strcmp(name, ".AMDGPU.disasm")) {
binary->disassembled = 1;
section_data = elf_getdata(section, section_data);
fprintf(stderr, "\nShader Disassembly:\n\n");
fprintf(stderr, "%.*s\n", (int)section_data->d_size,
(char *)section_data->d_buf);
}
}
LLVMDisposeMemoryBuffer(out_buffer);
LLVMDisposeTargetMachine(tm);
return 0;
}
/**
* Compile an LLVM module to machine code.
*
* @returns 0 for success, 1 for failure
*/
unsigned radeon_llvm_compile(LLVMModuleRef M, struct radeon_shader_binary *binary,
const char *gpu_family,
LLVMTargetMachineRef tm,
struct pipe_debug_callback *debug)
{
struct radeon_llvm_diagnostics diag;
char cpu[CPU_STRING_LEN];
char fs[FS_STRING_LEN];
char *err;
bool dispose_tm = false;
LLVMContextRef llvm_ctx;
LLVMMemoryBufferRef out_buffer;
unsigned buffer_size;
const char *buffer_data;
char triple[TRIPLE_STRING_LEN];
LLVMBool mem_err;
diag.debug = debug;
diag.retval = 0;
if (!tm) {
strncpy(triple, "r600--", TRIPLE_STRING_LEN);
LLVMTargetRef target = radeon_llvm_get_r600_target(triple);
if (!target) {
return 1;
}
strncpy(cpu, gpu_family, CPU_STRING_LEN);
memset(fs, 0, sizeof(fs));
strncpy(fs, "+DumpCode", FS_STRING_LEN);
tm = LLVMCreateTargetMachine(target, triple, cpu, fs,
LLVMCodeGenLevelDefault, LLVMRelocDefault,
LLVMCodeModelDefault);
dispose_tm = true;
}
/* Setup Diagnostic Handler*/
llvm_ctx = LLVMGetModuleContext(M);
LLVMContextSetDiagnosticHandler(llvm_ctx, radeonDiagnosticHandler, &diag);
/* Compile IR*/
mem_err = LLVMTargetMachineEmitToMemoryBuffer(tm, M, LLVMObjectFile, &err,
&out_buffer);
/* Process Errors/Warnings */
if (mem_err) {
fprintf(stderr, "%s: %s", __FUNCTION__, err);
pipe_debug_message(debug, SHADER_INFO,
"LLVM emit error: %s", err);
FREE(err);
diag.retval = 1;
goto out;
}
/* Extract Shader Code*/
buffer_size = LLVMGetBufferSize(out_buffer);
buffer_data = LLVMGetBufferStart(out_buffer);
radeon_elf_read(buffer_data, buffer_size, binary);
/* Clean up */
LLVMDisposeMemoryBuffer(out_buffer);
out:
if (dispose_tm) {
LLVMDisposeTargetMachine(tm);
}
if (diag.retval != 0)
pipe_debug_message(debug, SHADER_INFO, "LLVM compile failed");
return diag.retval;
}
