| /* |
| * 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 "brw_disasm_info.h" |
| #include "dev/gen_debug.h" |
| #include "compiler/nir/nir.h" |
| |
| __attribute__((weak)) void nir_print_instr(UNUSED const nir_instr *instr, |
| UNUSED FILE *fp) {} |
| |
| void |
| dump_assembly(void *assembly, struct disasm_info *disasm) |
| { |
| const struct gen_device_info *devinfo = disasm->devinfo; |
| const char *last_annotation_string = NULL; |
| const void *last_annotation_ir = NULL; |
| |
| foreach_list_typed(struct inst_group, group, link, &disasm->group_list) { |
| struct exec_node *next_node = exec_node_get_next(&group->link); |
| if (exec_node_is_tail_sentinel(next_node)) |
| break; |
| |
| struct inst_group *next = |
| exec_node_data(struct inst_group, next_node, link); |
| |
| int start_offset = group->offset; |
| int end_offset = next->offset; |
| |
| if (group->block_start) { |
| fprintf(stderr, " START B%d", group->block_start->num); |
| foreach_list_typed(struct bblock_link, predecessor_link, link, |
| &group->block_start->parents) { |
| struct bblock_t *predecessor_block = predecessor_link->block; |
| fprintf(stderr, " <-B%d", predecessor_block->num); |
| } |
| fprintf(stderr, " (%u cycles)\n", group->block_start->cycle_count); |
| } |
| |
| if (last_annotation_ir != group->ir) { |
| last_annotation_ir = group->ir; |
| if (last_annotation_ir) { |
| fprintf(stderr, " "); |
| nir_print_instr(group->ir, stderr); |
| fprintf(stderr, "\n"); |
| } |
| } |
| |
| if (last_annotation_string != group->annotation) { |
| last_annotation_string = group->annotation; |
| if (last_annotation_string) |
| fprintf(stderr, " %s\n", last_annotation_string); |
| } |
| |
| brw_disassemble(devinfo, assembly, start_offset, end_offset, stderr); |
| |
| if (group->error) { |
| fputs(group->error, stderr); |
| } |
| |
| if (group->block_end) { |
| fprintf(stderr, " END B%d", group->block_end->num); |
| foreach_list_typed(struct bblock_link, successor_link, link, |
| &group->block_end->children) { |
| struct bblock_t *successor_block = successor_link->block; |
| fprintf(stderr, " ->B%d", successor_block->num); |
| } |
| fprintf(stderr, "\n"); |
| } |
| } |
| fprintf(stderr, "\n"); |
| } |
| |
| struct disasm_info * |
| disasm_initialize(const struct gen_device_info *devinfo, |
| const struct cfg_t *cfg) |
| { |
| struct disasm_info *disasm = ralloc(NULL, struct disasm_info); |
| exec_list_make_empty(&disasm->group_list); |
| disasm->devinfo = devinfo; |
| disasm->cfg = cfg; |
| disasm->cur_block = 0; |
| disasm->use_tail = false; |
| return disasm; |
| } |
| |
| struct inst_group * |
| disasm_new_inst_group(struct disasm_info *disasm, unsigned next_inst_offset) |
| { |
| struct inst_group *tail = rzalloc(disasm, struct inst_group); |
| tail->offset = next_inst_offset; |
| exec_list_push_tail(&disasm->group_list, &tail->link); |
| return tail; |
| } |
| |
| void |
| disasm_annotate(struct disasm_info *disasm, |
| struct backend_instruction *inst, unsigned offset) |
| { |
| const struct gen_device_info *devinfo = disasm->devinfo; |
| const struct cfg_t *cfg = disasm->cfg; |
| |
| struct inst_group *group; |
| if (!disasm->use_tail) { |
| group = disasm_new_inst_group(disasm, offset); |
| } else { |
| disasm->use_tail = false; |
| group = exec_node_data(struct inst_group, |
| exec_list_get_tail_raw(&disasm->group_list), link); |
| } |
| |
| if ((INTEL_DEBUG & DEBUG_ANNOTATION) != 0) { |
| group->ir = inst->ir; |
| group->annotation = inst->annotation; |
| } |
| |
| if (bblock_start(cfg->blocks[disasm->cur_block]) == inst) { |
| group->block_start = cfg->blocks[disasm->cur_block]; |
| } |
| |
| /* 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) { |
| disasm->use_tail = true; |
| } |
| |
| if (bblock_end(cfg->blocks[disasm->cur_block]) == inst) { |
| group->block_end = cfg->blocks[disasm->cur_block]; |
| disasm->cur_block++; |
| } |
| } |
| |
| void |
| disasm_insert_error(struct disasm_info *disasm, unsigned offset, |
| const char *error) |
| { |
| foreach_list_typed(struct inst_group, cur, link, &disasm->group_list) { |
| struct exec_node *next_node = exec_node_get_next(&cur->link); |
| if (exec_node_is_tail_sentinel(next_node)) |
| break; |
| |
| struct inst_group *next = |
| exec_node_data(struct inst_group, next_node, link); |
| |
| if (next->offset <= offset) |
| continue; |
| |
| if (offset + sizeof(brw_inst) != next->offset) { |
| struct inst_group *new = ralloc(disasm, struct inst_group); |
| memcpy(new, cur, sizeof(struct inst_group)); |
| |
| cur->error = NULL; |
| cur->error_length = 0; |
| cur->block_end = NULL; |
| |
| new->offset = offset + sizeof(brw_inst); |
| new->block_start = NULL; |
| |
| exec_node_insert_after(&cur->link, &new->link); |
| } |
| |
| if (cur->error) |
| ralloc_strcat(&cur->error, error); |
| else |
| cur->error = ralloc_strdup(disasm, error); |
| return; |
| } |
| } |