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/*
* Copyright © 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "brw_cfg.h"
#include "brw_eu.h"
#include "intel_debug.h"
#include "intel_asm_annotation.h"
#include "glsl/nir/nir.h"
void
dump_assembly(void *assembly, int num_annotations, struct annotation *annotation,
const struct brw_device_info *devinfo)
{
const char *last_annotation_string = NULL;
const void *last_annotation_ir = NULL;
for (int i = 0; i < num_annotations; i++) {
int start_offset = annotation[i].offset;
int end_offset = annotation[i + 1].offset;
if (annotation[i].block_start) {
fprintf(stderr, " START B%d", annotation[i].block_start->num);
foreach_list_typed(struct bblock_link, predecessor_link, link,
&annotation[i].block_start->parents) {
struct bblock_t *predecessor_block = predecessor_link->block;
fprintf(stderr, " <-B%d", predecessor_block->num);
}
fprintf(stderr, "\n");
}
if (last_annotation_ir != annotation[i].ir) {
last_annotation_ir = annotation[i].ir;
if (last_annotation_ir) {
fprintf(stderr, " ");
nir_print_instr(annotation[i].ir, stderr);
fprintf(stderr, "\n");
}
}
if (last_annotation_string != annotation[i].annotation) {
last_annotation_string = annotation[i].annotation;
if (last_annotation_string)
fprintf(stderr, " %s\n", last_annotation_string);
}
brw_disassemble(devinfo, assembly, start_offset, end_offset, stderr);
if (annotation[i].error) {
fputs(annotation[i].error, stderr);
}
if (annotation[i].block_end) {
fprintf(stderr, " END B%d", annotation[i].block_end->num);
foreach_list_typed(struct bblock_link, successor_link, link,
&annotation[i].block_end->children) {
struct bblock_t *successor_block = successor_link->block;
fprintf(stderr, " ->B%d", successor_block->num);
}
fprintf(stderr, "\n");
}
}
fprintf(stderr, "\n");
}
static bool
annotation_array_ensure_space(struct annotation_info *annotation)
{
if (annotation->ann_size <= annotation->ann_count) {
int old_size = annotation->ann_size;
annotation->ann_size = MAX2(1024, annotation->ann_size * 2);
annotation->ann = reralloc(annotation->mem_ctx, annotation->ann,
struct annotation, annotation->ann_size);
if (!annotation->ann)
return false;
memset(annotation->ann + old_size, 0,
(annotation->ann_size - old_size) * sizeof(struct annotation));
}
return true;
}
void annotate(const struct brw_device_info *devinfo,
struct annotation_info *annotation, const struct cfg_t *cfg,
struct backend_instruction *inst, unsigned offset)
{
if (annotation->mem_ctx == NULL)
annotation->mem_ctx = ralloc_context(NULL);
if (!annotation_array_ensure_space(annotation))
return;
struct annotation *ann = &annotation->ann[annotation->ann_count++];
ann->offset = offset;
if ((INTEL_DEBUG & DEBUG_ANNOTATION) != 0) {
ann->ir = inst->ir;
ann->annotation = inst->annotation;
}
if (bblock_start(cfg->blocks[annotation->cur_block]) == inst) {
ann->block_start = cfg->blocks[annotation->cur_block];
}
if (bblock_end(cfg->blocks[annotation->cur_block]) == inst) {
ann->block_end = cfg->blocks[annotation->cur_block];
annotation->cur_block++;
}
/* Merge this annotation with the previous if possible. */
struct annotation *prev = annotation->ann_count > 1 ?
&annotation->ann[annotation->ann_count - 2] : NULL;
if (prev != NULL &&
ann->ir == prev->ir &&
ann->annotation == prev->annotation &&
ann->block_start == NULL &&
prev->block_end == NULL) {
if (ann->block_end == NULL)
annotation->ann_count--;
return;
}
/* There is no hardware DO instruction on Gen6+, so since DO always
* starts a basic block, we need to set the .block_start of the next
* instruction's annotation with a pointer to the bblock started by
* the DO.
*
* There's also only complication from emitting an annotation without
* a corresponding hardware instruction to disassemble.
*/
if (devinfo->gen >= 6 && inst->opcode == BRW_OPCODE_DO) {
annotation->ann_count--;
}
}
void
annotation_finalize(struct annotation_info *annotation,
unsigned next_inst_offset)
{
if (!annotation->ann_count)
return;
if (annotation->ann_count == annotation->ann_size) {
annotation->ann = reralloc(annotation->mem_ctx, annotation->ann,
struct annotation, annotation->ann_size + 1);
}
annotation->ann[annotation->ann_count].offset = next_inst_offset;
}
void
annotation_insert_error(struct annotation_info *annotation, unsigned offset,
const char *error)
{
struct annotation *ann;
if (!annotation->ann_count)
return;
/* We may have to split an annotation, so ensure we have enough space
* allocated for that case up front.
*/
if (!annotation_array_ensure_space(annotation))
return;
assume(annotation->ann_count > 0);
for (int i = 0; i < annotation->ann_count; i++) {
struct annotation *cur = &annotation->ann[i];
struct annotation *next = &annotation->ann[i + 1];
ann = cur;
if (next->offset <= offset)
continue;
if (offset + sizeof(brw_inst) != next->offset) {
memmove(next, cur,
(annotation->ann_count - i + 2) * sizeof(struct annotation));
cur->error = NULL;
cur->error_length = 0;
cur->block_end = NULL;
next->offset = offset + sizeof(brw_inst);
next->block_start = NULL;
annotation->ann_count++;
}
break;
}
if (ann->error)
ralloc_strcat(&ann->error, error);
else
ann->error = ralloc_strdup(annotation->mem_ctx, error);
}
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