131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include "compiler/brw_inst.h"
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#include "compiler/brw_eu.h"
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#include "gen_disasm.h"
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uint64_t INTEL_DEBUG;
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struct gen_disasm {
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struct gen_device_info devinfo;
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};
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static bool
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is_send(uint32_t opcode)
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{
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return (opcode == BRW_OPCODE_SEND ||
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opcode == BRW_OPCODE_SENDC ||
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opcode == BRW_OPCODE_SENDS ||
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opcode == BRW_OPCODE_SENDSC );
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}
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static int
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gen_disasm_find_end(struct gen_disasm *disasm, void *assembly, int start)
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{
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struct gen_device_info *devinfo = &disasm->devinfo;
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int offset = start;
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/* This loop exits when send-with-EOT or when opcode is 0 */
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while (true) {
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brw_inst *insn = assembly + offset;
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if (brw_inst_cmpt_control(devinfo, insn)) {
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offset += 8;
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} else {
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offset += 16;
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}
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/* Simplistic, but efficient way to terminate disasm */
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uint32_t opcode = brw_inst_opcode(devinfo, insn);
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if (opcode == 0 || (is_send(opcode) && brw_inst_eot(devinfo, insn))) {
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break;
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}
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}
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return offset;
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}
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void
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gen_disasm_disassemble(struct gen_disasm *disasm, void *assembly,
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int start, FILE *out)
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{
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struct gen_device_info *devinfo = &disasm->devinfo;
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int end = gen_disasm_find_end(disasm, assembly, start);
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/* Make a dummy disasm structure that brw_validate_instructions
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* can work from.
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*/
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struct disasm_info *disasm_info = disasm_initialize(devinfo, NULL);
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disasm_new_inst_group(disasm_info, start);
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disasm_new_inst_group(disasm_info, end);
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brw_validate_instructions(devinfo, assembly, start, end, disasm_info);
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foreach_list_typed(struct inst_group, group, link,
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&disasm_info->group_list) {
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struct exec_node *next_node = exec_node_get_next(&group->link);
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if (exec_node_is_tail_sentinel(next_node))
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break;
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struct inst_group *next =
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exec_node_data(struct inst_group, next_node, link);
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int start_offset = group->offset;
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int end_offset = next->offset;
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brw_disassemble(devinfo, assembly, start_offset, end_offset, out);
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if (group->error) {
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fputs(group->error, out);
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}
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}
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ralloc_free(disasm_info);
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}
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struct gen_disasm *
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gen_disasm_create(const struct gen_device_info *devinfo)
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{
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struct gen_disasm *gd;
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gd = malloc(sizeof *gd);
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if (gd == NULL)
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return NULL;
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gd->devinfo = *devinfo;
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brw_init_compaction_tables(&gd->devinfo);
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return gd;
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}
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void
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gen_disasm_destroy(struct gen_disasm *disasm)
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{
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free(disasm);
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}
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