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intel-gpu-tools/debugging: shader debugger

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high level summary of the files:
  * debug_rdata - get current state from debug registers. Helpful
    when developing the debugger, and could serve some purpose in the
    future.
  * eudb - the debugger itself
  * eviction_macro - generate the proper macro to flush the EU render
    cache until I get control flow working
  * pre_cpp - an evaluating c preprocesser like thing, to be used before
    cpp
  * sr - the system routine, exception handler which runs on the EU
  * test - a very basic test system routine
  * debug.h
This commit is contained in:
Ben Widawsky
2011-06-24 11:42:03 -07:00
parent e39b13d7e4
commit 62873796c4
11 changed files with 1463 additions and 1 deletions
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debugger/debug_rdata.c
+141
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/*
* Copyright © 2011 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.
*
* Authors:
* Ben Widawsky <ben@bwidawsk.net>
*
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "intel_gpu_tools.h"
struct eu_rdata {
union {
struct {
uint8_t sendc_dep : 1;
uint8_t swh_dep : 1;
uint8_t pwc_dep : 1;
uint8_t n2_dep : 1;
uint8_t n1_dep : 1;
uint8_t n0_dep : 1;
uint8_t flag1_dep : 1;
uint8_t flag0_dep : 1;
uint8_t indx_dep : 1;
uint8_t mrf_dep : 1;
uint8_t dst_dep : 1;
uint8_t src2_dep : 1;
uint8_t src1_dep : 1;
uint8_t src0_dep : 1;
uint8_t mp_dep_pin : 1;
uint8_t sp_dep_pin : 1;
uint8_t fftid : 8;
uint8_t ffid : 4;
uint8_t instruction_valid : 1;
uint8_t thread_status : 3;
};
uint32_t dword;
} ud0;
union {
struct {
uint8_t mrf_addr : 4;
uint8_t dst_addr : 7;
uint8_t src2_addr : 7;
uint8_t src1_addr : 7;
uint8_t src0_addr : 7;
};
uint32_t dword;
} ud1;
union {
struct {
uint16_t exip : 12;
uint8_t opcode : 7;
uint8_t pwc : 8;
uint8_t instruction_valid : 1;
uint8_t mbz : 4;
};
uint32_t dword;
} ud2;
};
const char *thread_status[] =
{"INVALID", "invalid/no thread", "standby (dependency)", "INVALID", "Executing",
"INVALID" , "INVALID" , "INVALID"};
static struct eu_rdata
collect_rdata(int eu, int tid) {
struct eu_rdata rdata;
intel_register_write(0x7800, eu << 16 | (3 * tid) << 8);
rdata.ud0.dword = intel_register_read(0x7840);
intel_register_write(0x7800, eu << 16 | (3 * tid + 1) << 8);
rdata.ud1.dword = intel_register_read(0x7840);
intel_register_write(0x7800, eu << 16 | (3 * tid + 2) << 8);
rdata.ud2.dword = intel_register_read(0x7840);
return rdata;
}
static void
print_rdata(struct eu_rdata rdata) {
printf("\t%s\n", thread_status[rdata.ud0.thread_status]);
printf("\tn1_dep: %d\n", rdata.ud0.n1_dep);
printf("\tpwc_dep: %d\n", rdata.ud0.pwc_dep);
printf("\tswh_dep: %d\n", rdata.ud0.swh_dep);
printf("\tsource 0 %x\n", rdata.ud1.src0_addr);
printf("\tsource 1 %x\n", rdata.ud1.src1_addr);
printf("\tsource 2 %x\n", rdata.ud1.src2_addr);
printf("\tdest %x\n", rdata.ud1.dst_addr);
printf("\tmrf %x\n", rdata.ud1.mrf_addr);
printf("\tIP: %x\n", rdata.ud2.exip);
printf("\topcode: %x\n", rdata.ud2.opcode);
}
static void
find_stuck_threads(void)
{
int i, j;
for (i = 0; i < 15; i++)
for (j = 0; j < 5; j++) {
struct eu_rdata rdata;
rdata = collect_rdata(i, j);
if (rdata.ud0.thread_status == 2 ||
rdata.ud0.thread_status == 4) {
printf("%d %d:\n", i, j);
print_rdata(rdata);
}
}
}
int main(int argc, char *argv[]) {
struct pci_device *pci_dev;
pci_dev = intel_get_pci_device();
intel_register_access_init(pci_dev, 1);
find_stuck_threads();
// collect_rdata(atoi(argv[1]), atoi(argv[2]));
return 0;
}