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mesa/src/asahi/lib/decode.c

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/*
* Copyright (C) 2017-2019 Alyssa Rosenzweig
* Copyright (C) 2017-2019 Connor Abbott
* Copyright (C) 2019 Collabora, Ltd.
*
* 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 <agx_pack.h>
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <stdbool.h>
#include <stdarg.h>
#include <ctype.h>
#include <sys/mman.h>
#include "decode.h"
#include "io.h"
#include "hexdump.h"
static const char *agx_alloc_types[AGX_NUM_ALLOC] = { "mem", "map", "cmd" };
static void
agx_disassemble(void *_code, size_t maxlen, FILE *fp)
{
/* stub */
}
FILE *agxdecode_dump_stream;
#define MAX_MAPPINGS 4096
struct agx_bo mmap_array[MAX_MAPPINGS];
unsigned mmap_count = 0;
struct agx_bo *ro_mappings[MAX_MAPPINGS];
unsigned ro_mapping_count = 0;
static struct agx_bo *
agxdecode_find_mapped_gpu_mem_containing_rw(uint64_t addr)
{
for (unsigned i = 0; i < mmap_count; ++i) {
if (mmap_array[i].type == AGX_ALLOC_REGULAR && addr >= mmap_array[i].ptr.gpu && (addr - mmap_array[i].ptr.gpu) < mmap_array[i].size)
return mmap_array + i;
}
return NULL;
}
static struct agx_bo *
agxdecode_find_mapped_gpu_mem_containing(uint64_t addr)
{
struct agx_bo *mem = agxdecode_find_mapped_gpu_mem_containing_rw(addr);
if (mem && mem->ptr.cpu && !mem->ro) {
mprotect(mem->ptr.cpu, mem->size, PROT_READ);
mem->ro = true;
ro_mappings[ro_mapping_count++] = mem;
assert(ro_mapping_count < MAX_MAPPINGS);
}
if (mem && !mem->mapped) {
fprintf(stderr, "[ERROR] access to memory not mapped (GPU %" PRIx64 ", handle %u)\n", mem->ptr.gpu, mem->handle);
}
return mem;
}
static struct agx_bo *
agxdecode_find_handle(unsigned handle, unsigned type)
{
for (unsigned i = 0; i < mmap_count; ++i) {
if (mmap_array[i].type != type)
continue;
if (mmap_array[i].handle != handle)
continue;
return &mmap_array[i];
}
return NULL;
}
static void
agxdecode_mark_mapped(unsigned handle)
{
struct agx_bo *bo = agxdecode_find_handle(handle, AGX_ALLOC_REGULAR);
if (!bo) {
fprintf(stderr, "ERROR - unknown BO mapped with handle %u\n", handle);
return;
}
/* Mark mapped for future consumption */
bo->mapped = true;
}
static void
agxdecode_decode_segment_list(void *segment_list)
{
unsigned nr_handles = 0;
/* First, mark everything unmapped */
for (unsigned i = 0; i < mmap_count; ++i)
mmap_array[i].mapped = false;
/* Check the header */
struct agx_map_header *hdr = segment_list;
if (hdr->resource_group_count == 0) {
fprintf(agxdecode_dump_stream, "ERROR - empty map\n");
return;
}
if (hdr->segment_count != 1) {
fprintf(agxdecode_dump_stream, "ERROR - can't handle segment count %u\n",
hdr->segment_count);
}
fprintf(agxdecode_dump_stream, "Segment list:\n");
fprintf(agxdecode_dump_stream, " Command buffer shmem ID: %" PRIx64 "\n", hdr->cmdbuf_id);
fprintf(agxdecode_dump_stream, " Encoder ID: %" PRIx64 "\n", hdr->encoder_id);
fprintf(agxdecode_dump_stream, " Kernel commands start offset: %u\n",
hdr->kernel_commands_start_offset);
fprintf(agxdecode_dump_stream, " Kernel commands end offset: %u\n",
hdr->kernel_commands_end_offset);
fprintf(agxdecode_dump_stream, " Unknown: 0x%X\n", hdr->unk);
/* Expected structure: header followed by resource groups */
size_t length = sizeof(struct agx_map_header);
length += sizeof(struct agx_map_entry) * hdr->resource_group_count;
if (length != hdr->length) {
fprintf(agxdecode_dump_stream, "ERROR: expected length %zu, got %u\n",
length, hdr->length);
}
if (hdr->padding[0] || hdr->padding[1])
fprintf(agxdecode_dump_stream, "ERROR - padding tripped\n");
/* Check the entries */
struct agx_map_entry *groups = ((void *) hdr) + sizeof(*hdr);
for (unsigned i = 0; i < hdr->resource_group_count; ++i) {
struct agx_map_entry group = groups[i];
unsigned count = group.resource_count;
STATIC_ASSERT(ARRAY_SIZE(group.resource_id) == 6);
STATIC_ASSERT(ARRAY_SIZE(group.resource_unk) == 6);
STATIC_ASSERT(ARRAY_SIZE(group.resource_flags) == 6);
if ((count < 1) || (count > 6)) {
fprintf(agxdecode_dump_stream, "ERROR - invalid count %u\n", count);
continue;
}
for (unsigned j = 0; j < count; ++j) {
unsigned handle = group.resource_id[j];
unsigned unk = group.resource_unk[j];
unsigned flags = group.resource_flags[j];
if (!handle) {
fprintf(agxdecode_dump_stream, "ERROR - invalid handle %u\n", handle);
continue;
}
agxdecode_mark_mapped(handle);
nr_handles++;
fprintf(agxdecode_dump_stream, "%u (0x%X, 0x%X)\n", handle, unk, flags);
}
if (group.unka)
fprintf(agxdecode_dump_stream, "ERROR - unknown 0x%X\n", group.unka);
/* Visual separator for resource groups */
fprintf(agxdecode_dump_stream, "\n");
}
/* Check the handle count */
if (nr_handles != hdr->total_resources) {
fprintf(agxdecode_dump_stream, "ERROR - wrong handle count, got %u, expected %u (%u entries)\n",
nr_handles, hdr->total_resources, hdr->resource_group_count);
}
}
static inline void *
__agxdecode_fetch_gpu_mem(const struct agx_bo *mem,
uint64_t gpu_va, size_t size,
int line, const char *filename)
{
if (!mem)
mem = agxdecode_find_mapped_gpu_mem_containing(gpu_va);
if (!mem) {
fprintf(stderr, "Access to unknown memory %" PRIx64 " in %s:%d\n",
gpu_va, filename, line);
fflush(agxdecode_dump_stream);
assert(0);
}
assert(mem);
assert(size + (gpu_va - mem->ptr.gpu) <= mem->size);
return mem->ptr.cpu + gpu_va - mem->ptr.gpu;
}
#define agxdecode_fetch_gpu_mem(gpu_va, size) \
__agxdecode_fetch_gpu_mem(NULL, gpu_va, size, __LINE__, __FILE__)
static void
agxdecode_map_read_write(void)
{
for (unsigned i = 0; i < ro_mapping_count; ++i) {
ro_mappings[i]->ro = false;
mprotect(ro_mappings[i]->ptr.cpu, ro_mappings[i]->size,
PROT_READ | PROT_WRITE);
}
ro_mapping_count = 0;
}
/* Helpers for parsing the cmdstream */
#define DUMP_UNPACKED(T, var, str) { \
agxdecode_log(str); \
agx_print(agxdecode_dump_stream, T, var, (agxdecode_indent + 1) * 2); \
}
#define DUMP_CL(T, cl, str) {\
agx_unpack(agxdecode_dump_stream, cl, T, temp); \
DUMP_UNPACKED(T, temp, str "\n"); \
}
#define agxdecode_log(str) fputs(str, agxdecode_dump_stream)
#define agxdecode_msg(str) fprintf(agxdecode_dump_stream, "// %s", str)
unsigned agxdecode_indent = 0;
uint64_t pipeline_base = 0;
static void
agxdecode_dump_bo(struct agx_bo *bo, const char *name)
{
fprintf(agxdecode_dump_stream, "%s %s (%u)\n", name, bo->name ?: "", bo->handle);
hexdump(agxdecode_dump_stream, bo->ptr.cpu, bo->size, false);
}
/* Abstraction for command stream parsing */
typedef unsigned (*decode_cmd)(const uint8_t *map, bool verbose);
#define STATE_DONE (0xFFFFFFFFu)
static void
agxdecode_stateful(uint64_t va, const char *label, decode_cmd decoder, bool verbose)
{
struct agx_bo *alloc = agxdecode_find_mapped_gpu_mem_containing(va);
assert(alloc != NULL && "nonexistant object");
fprintf(agxdecode_dump_stream, "%s (%" PRIx64 ", handle %u)\n", label, va, alloc->handle);
fflush(agxdecode_dump_stream);
uint8_t *map = agxdecode_fetch_gpu_mem(va, 64);
uint8_t *end = (uint8_t *) alloc->ptr.cpu + alloc->size;
if (verbose)
agxdecode_dump_bo(alloc, label);
fflush(agxdecode_dump_stream);
while (map < end) {
unsigned count = decoder(map, verbose);
/* If we fail to decode, default to a hexdump (don't hang) */
if (count == 0) {
hexdump(agxdecode_dump_stream, map, 8, false);
count = 8;
}
map += count;
fflush(agxdecode_dump_stream);
if (count == STATE_DONE)
break;
}
}
unsigned COUNTER = 0;
static unsigned
agxdecode_pipeline(const uint8_t *map, UNUSED bool verbose)
{
uint8_t zeroes[16] = { 0 };
if (map[0] == 0x4D && map[1] == 0xbd) {
/* TODO: Disambiguation for extended is a guess */
agx_unpack(agxdecode_dump_stream, map, SET_SHADER_EXTENDED, cmd);
DUMP_UNPACKED(SET_SHADER_EXTENDED, cmd, "Set shader\n");
if (cmd.preshader_mode == AGX_PRESHADER_MODE_PRESHADER) {
agxdecode_log("Preshader\n");
agx_disassemble(agxdecode_fetch_gpu_mem(cmd.preshader_code, 2048),
2048, agxdecode_dump_stream);
agxdecode_log("\n---\n");
}
agxdecode_log("\n");
agx_disassemble(agxdecode_fetch_gpu_mem(cmd.code, 2048),
2048, agxdecode_dump_stream);
agxdecode_log("\n");
char *name;
asprintf(&name, "file%u.bin", COUNTER++);
FILE *fp = fopen(name, "wb");
fwrite(agxdecode_fetch_gpu_mem(cmd.code, 2048), 1, 2048, fp);
fclose(fp);
free(name);
agxdecode_log("\n");
return AGX_SET_SHADER_EXTENDED_LENGTH;
} else if (map[0] == 0x4D) {
agx_unpack(agxdecode_dump_stream, map, SET_SHADER, cmd);
DUMP_UNPACKED(SET_SHADER, cmd, "Set shader\n");
fflush(agxdecode_dump_stream);
if (cmd.preshader_mode == AGX_PRESHADER_MODE_PRESHADER) {
agxdecode_log("Preshader\n");
agx_disassemble(agxdecode_fetch_gpu_mem(cmd.preshader_code, 2048),
2048, agxdecode_dump_stream);
agxdecode_log("\n---\n");
}
agxdecode_log("\n");
agx_disassemble(agxdecode_fetch_gpu_mem(cmd.code, 2048),
2048, agxdecode_dump_stream);
char *name;
asprintf(&name, "file%u.bin", COUNTER++);
FILE *fp = fopen(name, "wb");
fwrite(agxdecode_fetch_gpu_mem(cmd.code, 2048), 1, 2048, fp);
fclose(fp);
free(name);
agxdecode_log("\n");
return AGX_SET_SHADER_LENGTH;
} else if (map[0] == 0xDD) {
agx_unpack(agxdecode_dump_stream, map, BIND_TEXTURE, temp);
DUMP_UNPACKED(BIND_TEXTURE, temp, "Bind texture\n");
uint8_t *tex = agxdecode_fetch_gpu_mem(temp.buffer,
AGX_TEXTURE_LENGTH * temp.count);
/* Note: samplers only need 8 byte alignment? */
for (unsigned i = 0; i < temp.count; ++i) {
agx_unpack(agxdecode_dump_stream, tex, TEXTURE, t);
DUMP_CL(TEXTURE, tex, "Texture");
DUMP_CL(RENDER_TARGET, tex, "Render target");
tex += AGX_TEXTURE_LENGTH;
}
return AGX_BIND_TEXTURE_LENGTH;
} else if (map[0] == 0x9D) {
agx_unpack(agxdecode_dump_stream, map, BIND_SAMPLER, temp);
DUMP_UNPACKED(BIND_SAMPLER, temp, "Bind sampler\n");
uint8_t *samp = agxdecode_fetch_gpu_mem(temp.buffer,
AGX_SAMPLER_LENGTH * temp.count);
for (unsigned i = 0; i < temp.count; ++i) {
DUMP_CL(SAMPLER, samp, "Sampler");
samp += AGX_SAMPLER_LENGTH;
}
return AGX_BIND_SAMPLER_LENGTH;
} else if (map[0] == 0x1D) {
DUMP_CL(BIND_UNIFORM, map, "Bind uniform");
return AGX_BIND_UNIFORM_LENGTH;
} else if (memcmp(map, zeroes, 16) == 0) {
/* TODO: Termination */
return STATE_DONE;
} else {
return 0;
}
}
static void
agxdecode_record(uint64_t va, size_t size, bool verbose)
{
uint8_t *map = agxdecode_fetch_gpu_mem(va, size);
uint32_t tag = 0;
memcpy(&tag, map, 4);
if (tag == 0x00000C00) {
assert(size == AGX_VIEWPORT_LENGTH);
DUMP_CL(VIEWPORT, map, "Viewport");
} else if (tag == 0x100C0000) {
assert(size == AGX_INTERPOLATION_LENGTH);
DUMP_CL(INTERPOLATION, map, "Interpolation");
} else if (tag == 0x0C020000) {
assert(size == AGX_LINKAGE_LENGTH);
DUMP_CL(LINKAGE, map, "Linkage");
} else if (tag == 0x200004a) {
assert(size == AGX_UNKNOWN_4A_LENGTH);
DUMP_CL(UNKNOWN_4A, map, "Unknown 4a");
} else if (tag == 0x10000b5) {
assert(size == AGX_RASTERIZER_LENGTH);
DUMP_CL(RASTERIZER, map, "Rasterizer");
} else if (tag == 0x200000) {
assert(size == AGX_CULL_LENGTH);
DUMP_CL(CULL, map, "Cull");
} else if (tag == 0x000100) {
assert(size == AGX_SET_INDEX_LENGTH);
DUMP_CL(SET_INDEX, map, "Set index");
} else if (tag == 0x800000) {
assert(size == AGX_BIND_FRAGMENT_PIPELINE_LENGTH);
agx_unpack(agxdecode_dump_stream, map, BIND_FRAGMENT_PIPELINE, cmd);
agxdecode_stateful(cmd.pipeline, "Pipeline", agxdecode_pipeline, verbose);
if (cmd.cf_bindings) {
uint8_t *map = agxdecode_fetch_gpu_mem(cmd.cf_bindings, 128);
hexdump(agxdecode_dump_stream, map, 128, false);
DUMP_CL(CF_BINDING_HEADER, map, "Coefficient binding header:");
map += AGX_CF_BINDING_HEADER_LENGTH;
for (unsigned i = 0; i < cmd.cf_binding_count; ++i) {
DUMP_CL(CF_BINDING, map, "Coefficient binding:");
map += AGX_CF_BINDING_LENGTH;
}
}
DUMP_UNPACKED(BIND_FRAGMENT_PIPELINE, cmd, "Bind fragment pipeline\n");
} else if (size == 0) {
pipeline_base = va;
} else {
fprintf(agxdecode_dump_stream, "Record %" PRIx64 "\n", va);
hexdump(agxdecode_dump_stream, map, size, false);
}
}
static unsigned
agxdecode_cmd(const uint8_t *map, bool verbose)
{
if (map[0] == 0x02 && map[1] == 0x10 && map[2] == 0x00 && map[3] == 0x00) {
agx_unpack(agxdecode_dump_stream, map, LAUNCH, cmd);
agxdecode_stateful(cmd.pipeline, "Pipeline", agxdecode_pipeline, verbose);
DUMP_UNPACKED(LAUNCH, cmd, "Launch\n");
return AGX_LAUNCH_LENGTH;
} else if (map[0] == 0x2E && map[1] == 0x00 && map[2] == 0x00 && map[3] == 0x40) {
agx_unpack(agxdecode_dump_stream, map, BIND_VERTEX_PIPELINE, cmd);
agxdecode_stateful(cmd.pipeline, "Pipeline", agxdecode_pipeline, verbose);
DUMP_UNPACKED(BIND_VERTEX_PIPELINE, cmd, "Bind vertex pipeline\n");
return AGX_BIND_VERTEX_PIPELINE_LENGTH;
} else if (map[3] == 0x61) {
DUMP_CL(DRAW, map, "Draw");
return AGX_DRAW_LENGTH;
} else if (map[2] == 0x00 && map[3] == 0x00) {
/* No need to explicitly dump the record */
agx_unpack(agxdecode_dump_stream, map, RECORD, cmd);
uint64_t address = (((uint64_t) cmd.pointer_hi) << 32) | cmd.pointer_lo;
struct agx_bo *mem = agxdecode_find_mapped_gpu_mem_containing(address);
if (mem)
agxdecode_record(address, cmd.size_words * 4, verbose);
else
DUMP_UNPACKED(RECORD, cmd, "Non-existant record (XXX)\n");
return AGX_RECORD_LENGTH;
} else if (map[1] == 0 && map[2] == 0 && map[3] == 0xC0 && map[4] == 0x00) {
ASSERTED unsigned zero[4] = { 0 };
assert(memcmp(map + 4, zero, sizeof(zero)) == 0);
return STATE_DONE;
} else {
return 0;
}
}
void
agxdecode_cmdstream(unsigned cmdbuf_handle, unsigned map_handle, bool verbose)
{
agxdecode_dump_file_open();
struct agx_bo *cmdbuf = agxdecode_find_handle(cmdbuf_handle, AGX_ALLOC_CMDBUF);
struct agx_bo *map = agxdecode_find_handle(map_handle, AGX_ALLOC_MEMMAP);
assert(cmdbuf != NULL && "nonexistant command buffer");
assert(map != NULL && "nonexistant mapping");
/* Before decoding anything, validate the map. Set bo->mapped fields */
agxdecode_decode_segment_list(map->ptr.cpu);
/* Print the IOGPU stuff */
agx_unpack(agxdecode_dump_stream, cmdbuf->ptr.cpu, IOGPU_HEADER, cmd);
DUMP_UNPACKED(IOGPU_HEADER, cmd, "IOGPU Header\n");
agx_unpack(agxdecode_dump_stream, ((uint32_t *) cmdbuf->ptr.cpu) + 160,
IOGPU_INTERNAL_PIPELINES, pip);
DUMP_CL(IOGPU_INTERNAL_PIPELINES, ((uint32_t *) cmdbuf->ptr.cpu) + 160, "Internal pipelines");
DUMP_CL(IOGPU_AUX_FRAMEBUFFER, ((uint32_t *) cmdbuf->ptr.cpu) + 228, "Aux Framebuffer");
agx_unpack(agxdecode_dump_stream, ((uint32_t *) cmdbuf->ptr.cpu) + 292,
IOGPU_CLEAR_Z_S, clearzs);
DUMP_UNPACKED(IOGPU_CLEAR_Z_S, clearzs, "Clear Z/S");
/* Guard against changes */
uint32_t zeroes[356 - 344] = { 0 };
assert(memcmp(((uint32_t *) cmdbuf->ptr.cpu) + 344, zeroes, 4 * (356 - 344)) == 0);
DUMP_CL(IOGPU_MISC, ((uint32_t *) cmdbuf->ptr.cpu) + 356, "Misc");
/* Should be unused, we think */
for (unsigned i = (0x6B0 / 4); i < (cmd.attachment_offset / 4); ++i) {
assert(((uint32_t *) cmdbuf->ptr.cpu)[i] == 0);
}
DUMP_CL(IOGPU_ATTACHMENT_COUNT, ((uint8_t *) cmdbuf->ptr.cpu +
cmd.attachment_offset), "Attachment count");
uint32_t *attachments = (uint32_t *) ((uint8_t *) cmdbuf->ptr.cpu + cmd.attachment_offset);
unsigned attachment_count = attachments[3];
for (unsigned i = 0; i < attachment_count; ++i) {
uint32_t *ptr = attachments + 4 + (i * AGX_IOGPU_ATTACHMENT_LENGTH / 4);
DUMP_CL(IOGPU_ATTACHMENT, ptr, "Attachment");
}
uint64_t *encoder = ((uint64_t *) cmdbuf->ptr.cpu) + 7;
agxdecode_stateful(*encoder, "Encoder", agxdecode_cmd, verbose);
if (pip.clear_pipeline_unk) {
assert(pip.clear_pipeline_unk == 0x4);
agxdecode_stateful(pip.clear_pipeline, "Clear pipeline",
agxdecode_pipeline, verbose);
}
if (pip.store_pipeline_unk) {
assert(pip.store_pipeline_unk == 0x4);
agxdecode_stateful(pip.store_pipeline, "Store pipeline",
agxdecode_pipeline, verbose);
}
assert((clearzs.partial_reload_pipeline_unk & 0xF) == 0x4);
if (clearzs.partial_reload_pipeline) {
agxdecode_stateful(clearzs.partial_reload_pipeline,
"Partial reload pipeline", agxdecode_pipeline, verbose);
}
if (clearzs.partial_store_pipeline) {
agxdecode_stateful(clearzs.partial_store_pipeline,
"Partial store pipeline", agxdecode_pipeline, verbose);
}
agxdecode_map_read_write();
}
void
agxdecode_dump_mappings(unsigned map_handle)
{
agxdecode_dump_file_open();
struct agx_bo *map = agxdecode_find_handle(map_handle, AGX_ALLOC_MEMMAP);
assert(map != NULL && "nonexistant mapping");
agxdecode_decode_segment_list(map->ptr.cpu);
for (unsigned i = 0; i < mmap_count; ++i) {
if (!mmap_array[i].ptr.cpu || !mmap_array[i].size || !mmap_array[i].mapped)
continue;
assert(mmap_array[i].type < AGX_NUM_ALLOC);
fprintf(agxdecode_dump_stream, "Buffer: type %s, gpu %" PRIx64 ", handle %u.bin:\n\n",
agx_alloc_types[mmap_array[i].type],
mmap_array[i].ptr.gpu, mmap_array[i].handle);
hexdump(agxdecode_dump_stream, mmap_array[i].ptr.cpu, mmap_array[i].size, false);
fprintf(agxdecode_dump_stream, "\n");
}
}
void
agxdecode_track_alloc(struct agx_bo *alloc)
{
assert((mmap_count + 1) < MAX_MAPPINGS);
for (unsigned i = 0; i < mmap_count; ++i) {
struct agx_bo *bo = &mmap_array[i];
bool match = (bo->handle == alloc->handle && bo->type == alloc->type);
assert(!match && "tried to alloc already allocated BO");
}
mmap_array[mmap_count++] = *alloc;
}
void
agxdecode_track_free(struct agx_bo *bo)
{
bool found = false;
for (unsigned i = 0; i < mmap_count; ++i) {
if (mmap_array[i].handle == bo->handle && mmap_array[i].type == bo->type) {
assert(!found && "mapped multiple times!");
found = true;
memset(&mmap_array[i], 0, sizeof(mmap_array[i]));
}
}
assert(found && "freed unmapped memory");
}
static int agxdecode_dump_frame_count = 0;
void
agxdecode_dump_file_open(void)
{
if (agxdecode_dump_stream)
return;
/* This does a getenv every frame, so it is possible to use
* setenv to change the base at runtime.
*/
const char *dump_file_base = getenv("AGXDECODE_DUMP_FILE") ?: "agxdecode.dump";
if (!strcmp(dump_file_base, "stderr"))
agxdecode_dump_stream = stderr;
else {
char buffer[1024];
snprintf(buffer, sizeof(buffer), "%s.%04d", dump_file_base, agxdecode_dump_frame_count);
printf("agxdecode: dump command stream to file %s\n", buffer);
agxdecode_dump_stream = fopen(buffer, "w");
if (!agxdecode_dump_stream)
fprintf(stderr,
"agxdecode: failed to open command stream log file %s\n",
buffer);
}
}
static void
agxdecode_dump_file_close(void)
{
if (agxdecode_dump_stream && agxdecode_dump_stream != stderr) {
fclose(agxdecode_dump_stream);
agxdecode_dump_stream = NULL;
}
}
void
agxdecode_next_frame(void)
{
agxdecode_dump_file_close();
agxdecode_dump_frame_count++;
}
void
agxdecode_close(void)
{
agxdecode_dump_file_close();
}
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