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coredump.c
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coredump.c
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/*
VitaShell
Copyright (C) 2015-2018, TheFloW
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "main.h"
#include "file.h"
#include "utils.h"
#include "theme.h"
#include "coredump.h"
#include "elf.h"
typedef struct {
int unk_0; // 0x00
int size; // 0x04
int unk_8; // 0x08
char name[16]; // 0x0C
int unk_1C; // 0x1C
int num; // 0x20
} InfoHeader; // 0x24
typedef struct {
int unk; // 0x00
int perm; // 0x04
uint32_t addr; // 0x08
uint32_t size; // 0x0C
int unk_10; // 0x10
} ModuleSegment; // 0x14
typedef struct {
int unk_0; // 0x00
int uid; // 0x04
int sdk_version; // 0x08
int version; // 0xC
int unk_10; // 0x10
int addr_14; // 0x14
int unk_18; // 0x18
int addr_1C; // 0x1C
int unk_20; // 0x20
char name[28]; // 0x24
int unk_44; // 0x40
int unk_48; // 0x44 2
uint32_t nid; // 0x48
int num_segments; // 0x4C
ModuleSegment segments[1]; // 0x50
uint32_t addr[4]; // 0x78
} ModuleInfoOneSegment; // 0x88
typedef struct {
int unk_0; // 0x00
int uid; // 0x04
int sdk_version; // 0x08
int version; // 0xC
int unk_10; // 0x10
int addr_14; // 0x14
int unk_18; // 0x18
int addr_1C; // 0x1C
int unk_20; // 0x20
char name[28]; // 0x24
int unk_44; // 0x40
int unk_48; // 0x44 2
uint32_t nid; // 0x48
int num_segments; // 0x4C
ModuleSegment segments[2]; // 0x50
uint32_t addr[4]; // 0x78
} ModuleInfoTwoSegment; // 0x88
typedef struct {
int unk; // 0x00
int uid; // 0x04
char name[32]; // 0x08
int type; // 0x28
uint32_t vaddr; // 0x2C
uint32_t vsize; // 0x30
int unk_34;
int unk_38;
int unk_3C;
int unk_40;
int unk_44;
} MemBlkInfo; // 0x48
typedef struct {
int size; // 0x00
int uid; // 0x04
char name[32]; // 0x08
int unk_28; // 0x28
int unk_2C[18]; // 0x2C
int cause; // 0x74
int unk_78[9]; // 0x78
uint32_t pc; // 0x9C
int unk_A0[10]; // 0xA0
} ThreadInfo; // 0xC8
typedef struct {
int size; // 0x00
int uid; // 0x04
uint32_t regs[16]; // 0x08
int unk[75]; // 0x48
uint32_t bad_v_addr; // 0x174
} ThreadRegInfo; // 0x178
// ARM registers
static char *regnames[] = { "a1", "a2", "a3", "a4",
"v1", "v2", "v3", "v4",
"v5", "v6", "v7", "v8",
"ip", "sp", "lr", "pc" };
static char *getCauseName(int cause) {
switch (cause) {
case 0x30002:
return "Undefined instruction exception";
case 0x30003:
return "Prefetch abort exception";
case 0x30004:
return "Data abort exception";
case 0x60080:
return "Division by zero";
}
return "Unknown cause";
}
static int decompressGzip(uint8_t *dst, int size_dst, uint8_t *src, int size_src) {
z_stream z;
memset(&z, 0, sizeof(z_stream));
z.avail_in = size_src;
z.next_in = src;
z.avail_out = size_dst;
z.next_out = dst;
if (inflateInit2(&z, 15 32) != Z_OK)
return -1;
if (inflate(&z, Z_FINISH) != Z_STREAM_END) {
inflateEnd(&z);
return -2;
}
inflateEnd(&z);
return z.total_out;
}
int coredumpViewer(const char *file) {
void *buffer = memalign(4096, BIG_BUFFER_SIZE);
if (!buffer)
return VITASHELL_ERROR_NO_MEMORY;
int size = ReadFile(file, buffer, BIG_BUFFER_SIZE);
if (*(uint16_t *)buffer == 0x8B1F) {
void *out_buf = memalign(4096, BIG_BUFFER_SIZE);
if (!out_buf) {
free(buffer);
return VITASHELL_ERROR_NO_MEMORY;
}
int out_size = decompressGzip(out_buf, BIG_BUFFER_SIZE, buffer, size);
if (out_size < 0) {
free(out_buf);
free(buffer);
return -3;
}
memcpy(buffer, out_buf, out_size);
free(out_buf);
}
Elf32_Ehdr *ehdr = (Elf32_Ehdr *)buffer;
Elf32_Phdr *phdr = (Elf32_Phdr *)((uint32_t)buffer ehdr->e_phoff);
if (ehdr->e_ident[EI_MAG0] != ELFMAG0 ||
ehdr->e_ident[EI_MAG1] != ELFMAG1 ||
ehdr->e_ident[EI_MAG2] != ELFMAG2 ||
ehdr->e_ident[EI_MAG3] != ELFMAG3) {
free(buffer);
return VITASHELL_ERROR_INVALID_MAGIC;
}
char thname[32], modname[32];
SceUID thid = -1, modid = -1;
uint32_t epc = -1, rel_epc = -1;
int cause = -1;
uint32_t bad_v_addr = -1;
uint32_t regs[16];
int i;
for (i = 0; i < ehdr->e_phnum; i ) {
if (phdr[i].p_type == 0x4) {
void *program = malloc(phdr[i].p_filesz);
if (!program) {
free(buffer);
return VITASHELL_ERROR_NO_MEMORY;
}
memcpy(program, buffer phdr[i].p_offset, phdr[i].p_filesz);
InfoHeader *info = (InfoHeader *)program;
if (strcmp(info->name, "THREAD_INFO") == 0) {
int j;
for (j = 0; j < ((InfoHeader *)program)->num; j ) {
ThreadInfo *thread_info = (ThreadInfo *)(program sizeof(InfoHeader));
if (thread_info[j].cause != 0) {
strcpy(thname, thread_info[j].name);
thid = thread_info[j].uid;
epc = thread_info[j].pc;
cause = thread_info[j].cause;
break;
}
}
} else if (strcmp(info->name, "THREAD_REG_INFO") == 0) {
int j;
for (j = 0; j < ((InfoHeader *)program)->num; j ) {
ThreadRegInfo *thread_reg_info = (ThreadRegInfo *)(program sizeof(InfoHeader));
if (thread_reg_info[j].uid == thid) {
memcpy(®s, thread_reg_info[j].regs, sizeof(regs));
bad_v_addr = thread_reg_info[j].bad_v_addr;
break;
}
}
} else if (strcmp(info->name, "MODULE_INFO") == 0) {
uint32_t offset = 0;
int j;
for (j = 0; j < ((InfoHeader *)program)->num; j ) {
ModuleInfoTwoSegment *mod_info = (ModuleInfoTwoSegment *)(program sizeof(InfoHeader) offset);
if (epc >= mod_info->segments[0].addr && epc < (mod_info->segments[0].addr mod_info->segments[0].size)) {
strcpy(modname, mod_info->name);
modid = mod_info->uid;
rel_epc = epc - mod_info->segments[0].addr;
break;
}
if (mod_info->num_segments == 2) {
offset = sizeof(ModuleInfoTwoSegment);
} else {
offset = sizeof(ModuleInfoOneSegment);
}
}
}
free(program);
}
}
while (1) {
readPad();
if (pressed_pad[PAD_CANCEL]) {
break;
}
// Start drawing
startDrawing(bg_text_image);
// Draw shell info
drawShellInfo(file);
float y = START_Y;
// Exception
pgf_draw_text(SHELL_MARGIN_X, y, TEXT_COLOR, "Exception");
pgf_draw_text(COREDUMP_INFO_X, y, TEXT_COLOR, getCauseName(cause));
y = FONT_Y_SPACE;
// Thread ID
pgf_draw_text(SHELL_MARGIN_X, y, TEXT_COLOR, "Thread ID");
pgf_draw_textf(COREDUMP_INFO_X, y, TEXT_COLOR, "0xX", thid);
y = FONT_Y_SPACE;
// Thread name
pgf_draw_text(SHELL_MARGIN_X, y, TEXT_COLOR, "Thread name");
pgf_draw_text(COREDUMP_INFO_X, y, TEXT_COLOR, thname);
y = FONT_Y_SPACE;
// EPC
pgf_draw_text(SHELL_MARGIN_X, y, TEXT_COLOR, "EPC");
if (rel_epc != -1)
pgf_draw_textf(COREDUMP_INFO_X, y, TEXT_COLOR, "%s 0xX", modname, rel_epc);
else
pgf_draw_textf(COREDUMP_INFO_X, y, TEXT_COLOR, "0xX", epc);
y = FONT_Y_SPACE;
// Cause
pgf_draw_text(SHELL_MARGIN_X, y, TEXT_COLOR, "Cause");
pgf_draw_textf(COREDUMP_INFO_X, y, TEXT_COLOR, "0xX", cause);
y = FONT_Y_SPACE;
// BadVAddr
pgf_draw_text(SHELL_MARGIN_X, y, TEXT_COLOR, "BadVAddr");
pgf_draw_textf(COREDUMP_INFO_X, y, TEXT_COLOR, "0xX", bad_v_addr);
y = FONT_Y_SPACE;
// Registers
int j;
for (j = 0; j < 4; j ) {
float x = SHELL_MARGIN_X;
int i;
for (i = 0; i < 4; i ) {
pgf_draw_textf(x, y, TEXT_COLOR, "%s:", regnames[j * 4 i]);
x = COREDUMP_REGISTER_NAME_SPACE;
pgf_draw_textf(x, y, TEXT_COLOR, "0xX", regs[j * 4 i]);
x = COREDUMP_REGISTER_SPACE;
}
y = FONT_Y_SPACE;
}
// End drawing
endDrawing();
}
free(buffer);
return 0;
}