diff options
Diffstat (limited to 'debuggerd/arm/machine.c')
| -rw-r--r-- | debuggerd/arm/machine.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/debuggerd/arm/machine.c b/debuggerd/arm/machine.c deleted file mode 100644 index 67e3028..0000000 --- a/debuggerd/arm/machine.c +++ /dev/null @@ -1,188 +0,0 @@ -/* system/debuggerd/debuggerd.c -** -** Copyright 2006, The Android Open Source Project -** -** Licensed under the Apache License, Version 2.0 (the "License"); -** you may not use this file except in compliance with the License. -** You may obtain a copy of the License at -** -** http://www.apache.org/licenses/LICENSE-2.0 -** -** Unless required by applicable law or agreed to in writing, software -** distributed under the License is distributed on an "AS IS" BASIS, -** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -** See the License for the specific language governing permissions and -** limitations under the License. -*/ - -#include <stddef.h> -#include <stdbool.h> -#include <stdlib.h> -#include <string.h> -#include <stdio.h> -#include <errno.h> -#include <sys/types.h> -#include <sys/ptrace.h> - -#include <corkscrew/ptrace.h> - -#include <linux/user.h> - -#include "../utility.h" -#include "../machine.h" - -/* enable to dump memory pointed to by every register */ -#define DUMP_MEMORY_FOR_ALL_REGISTERS 1 - -#ifdef WITH_VFP -#ifdef WITH_VFP_D32 -#define NUM_VFP_REGS 32 -#else -#define NUM_VFP_REGS 16 -#endif -#endif - -static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scopeFlags) { - char code_buffer[64]; /* actual 8+1+((8+1)*4) + 1 == 45 */ - char ascii_buffer[32]; /* actual 16 + 1 == 17 */ - uintptr_t p, end; - - p = addr & ~3; - p -= 32; - if (p > addr) { - /* catch underflow */ - p = 0; - } - /* Dump more memory content for the crashing thread. */ - end = p + 256; - /* catch overflow; 'end - p' has to be multiples of 16 */ - while (end < p) - end -= 16; - - /* Dump the code around PC as: - * addr contents ascii - * 00008d34 ef000000 e8bd0090 e1b00000 512fff1e ............../Q - * 00008d44 ea00b1f9 e92d0090 e3a070fc ef000000 ......-..p...... - */ - while (p < end) { - char* asc_out = ascii_buffer; - - sprintf(code_buffer, "%08x ", p); - - int i; - for (i = 0; i < 4; i++) { - /* - * If we see (data == -1 && errno != 0), we know that the ptrace - * call failed, probably because we're dumping memory in an - * unmapped or inaccessible page. I don't know if there's - * value in making that explicit in the output -- it likely - * just complicates parsing and clarifies nothing for the - * enlightened reader. - */ - long data = ptrace(PTRACE_PEEKTEXT, tid, (void*)p, NULL); - sprintf(code_buffer + strlen(code_buffer), "%08lx ", data); - - /* Enable the following code blob to dump ASCII values */ -#if 0 - int j; - for (j = 0; j < 4; j++) { - /* - * Our isprint() allows high-ASCII characters that display - * differently (often badly) in different viewers, so we - * just use a simpler test. - */ - char val = (data >> (j*8)) & 0xff; - if (val >= 0x20 && val < 0x7f) { - *asc_out++ = val; - } else { - *asc_out++ = '.'; - } - } -#endif - p += 4; - } - *asc_out = '\0'; - _LOG(log, scopeFlags, " %s %s\n", code_buffer, ascii_buffer); - } -} - -/* - * If configured to do so, dump memory around *all* registers - * for the crashing thread. - */ -void dump_memory_and_code(const ptrace_context_t* context __attribute((unused)), - log_t* log, pid_t tid, bool at_fault) { - struct pt_regs regs; - if(ptrace(PTRACE_GETREGS, tid, 0, ®s)) { - return; - } - - int scopeFlags = at_fault ? SCOPE_AT_FAULT : 0; - - if (at_fault && DUMP_MEMORY_FOR_ALL_REGISTERS) { - static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp"; - - for (int reg = 0; reg < 14; reg++) { - /* this may not be a valid way to access, but it'll do for now */ - uintptr_t addr = regs.uregs[reg]; - - /* - * Don't bother if it looks like a small int or ~= null, or if - * it's in the kernel area. - */ - if (addr < 4096 || addr >= 0xc0000000) { - continue; - } - - _LOG(log, scopeFlags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]); - dump_memory(log, tid, addr, scopeFlags | SCOPE_SENSITIVE); - } - } - - /* explicitly allow upload of code dump logging */ - _LOG(log, scopeFlags, "\ncode around pc:\n"); - dump_memory(log, tid, (uintptr_t)regs.ARM_pc, scopeFlags); - - if (regs.ARM_pc != regs.ARM_lr) { - _LOG(log, scopeFlags, "\ncode around lr:\n"); - dump_memory(log, tid, (uintptr_t)regs.ARM_lr, scopeFlags); - } -} - -void dump_registers(const ptrace_context_t* context __attribute((unused)), - log_t* log, pid_t tid, bool at_fault) -{ - struct pt_regs r; - int scopeFlags = at_fault ? SCOPE_AT_FAULT : 0; - - if(ptrace(PTRACE_GETREGS, tid, 0, &r)) { - _LOG(log, scopeFlags, "cannot get registers: %s\n", strerror(errno)); - return; - } - - _LOG(log, scopeFlags, " r0 %08x r1 %08x r2 %08x r3 %08x\n", - (uint32_t)r.ARM_r0, (uint32_t)r.ARM_r1, (uint32_t)r.ARM_r2, (uint32_t)r.ARM_r3); - _LOG(log, scopeFlags, " r4 %08x r5 %08x r6 %08x r7 %08x\n", - (uint32_t)r.ARM_r4, (uint32_t)r.ARM_r5, (uint32_t)r.ARM_r6, (uint32_t)r.ARM_r7); - _LOG(log, scopeFlags, " r8 %08x r9 %08x sl %08x fp %08x\n", - (uint32_t)r.ARM_r8, (uint32_t)r.ARM_r9, (uint32_t)r.ARM_r10, (uint32_t)r.ARM_fp); - _LOG(log, scopeFlags, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n", - (uint32_t)r.ARM_ip, (uint32_t)r.ARM_sp, (uint32_t)r.ARM_lr, - (uint32_t)r.ARM_pc, (uint32_t)r.ARM_cpsr); - -#ifdef WITH_VFP - struct user_vfp vfp_regs; - int i; - - if(ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) { - _LOG(log, scopeFlags, "cannot get registers: %s\n", strerror(errno)); - return; - } - - for (i = 0; i < NUM_VFP_REGS; i += 2) { - _LOG(log, scopeFlags, " d%-2d %016llx d%-2d %016llx\n", - i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]); - } - _LOG(log, scopeFlags, " scr %08lx\n", vfp_regs.fpscr); -#endif -} |