diff options
Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/android/breakpad_getcontext.S')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/android/breakpad_getcontext.S | 489 |
1 files changed, 0 insertions, 489 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/android/breakpad_getcontext.S b/toolkit/crashreporter/google-breakpad/src/common/android/breakpad_getcontext.S deleted file mode 100644 index fd6326adf..000000000 --- a/toolkit/crashreporter/google-breakpad/src/common/android/breakpad_getcontext.S +++ /dev/null @@ -1,489 +0,0 @@ -// Copyright (c) 2012, Google Inc. -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -// A minimalistic implementation of getcontext() to be used by -// Google Breakpad on Android. - -#include "common/android/ucontext_constants.h" - -/* int getcontext (ucontext_t *ucp) */ - -#if defined(__arm__) - - .text - .global breakpad_getcontext - .hidden breakpad_getcontext - .type breakpad_getcontext, #function - .align 0 - .fnstart -breakpad_getcontext: - - /* First, save r4-r11 */ - add r1, r0, #(MCONTEXT_GREGS_OFFSET + 4*4) - stm r1, {r4-r11} - - /* r12 is a scratch register, don't save it */ - - /* Save sp and lr explicitly. */ - /* - sp can't be stored with stmia in Thumb-2 */ - /* - STM instructions that store sp and pc are deprecated in ARM */ - str sp, [r0, #(MCONTEXT_GREGS_OFFSET + 13*4)] - str lr, [r0, #(MCONTEXT_GREGS_OFFSET + 14*4)] - - /* Save the caller's address in 'pc' */ - str lr, [r0, #(MCONTEXT_GREGS_OFFSET + 15*4)] - - /* Save ucontext_t* pointer across next call */ - mov r4, r0 - - /* Call sigprocmask(SIG_BLOCK, NULL, &(ucontext->uc_sigmask)) */ - mov r0, #0 /* SIG_BLOCK */ - mov r1, #0 /* NULL */ - add r2, r4, #UCONTEXT_SIGMASK_OFFSET - bl sigprocmask(PLT) - - /* Intentionally do not save the FPU state here. This is because on - * Linux/ARM, one should instead use ptrace(PTRACE_GETFPREGS) or - * ptrace(PTRACE_GETVFPREGS) to get it. - * - * Note that a real implementation of getcontext() would need to save - * this here to allow setcontext()/swapcontext() to work correctly. - */ - - /* Restore the values of r4 and lr */ - mov r0, r4 - ldr lr, [r0, #(MCONTEXT_GREGS_OFFSET + 14*4)] - ldr r4, [r0, #(MCONTEXT_GREGS_OFFSET + 4*4)] - - /* Return 0 */ - mov r0, #0 - bx lr - - .fnend - .size breakpad_getcontext, . - breakpad_getcontext - -#elif defined(__aarch64__) - -#define _NSIG 64 -#define __NR_rt_sigprocmask 135 - - .text - .global breakpad_getcontext - .hidden breakpad_getcontext - .type breakpad_getcontext, #function - .align 4 - .cfi_startproc -breakpad_getcontext: - - /* The saved context will return to the getcontext() call point - with a return value of 0 */ - str xzr, [x0, MCONTEXT_GREGS_OFFSET + 0 * REGISTER_SIZE] - - stp x18, x19, [x0, MCONTEXT_GREGS_OFFSET + 18 * REGISTER_SIZE] - stp x20, x21, [x0, MCONTEXT_GREGS_OFFSET + 20 * REGISTER_SIZE] - stp x22, x23, [x0, MCONTEXT_GREGS_OFFSET + 22 * REGISTER_SIZE] - stp x24, x25, [x0, MCONTEXT_GREGS_OFFSET + 24 * REGISTER_SIZE] - stp x26, x27, [x0, MCONTEXT_GREGS_OFFSET + 26 * REGISTER_SIZE] - stp x28, x29, [x0, MCONTEXT_GREGS_OFFSET + 28 * REGISTER_SIZE] - str x30, [x0, MCONTEXT_GREGS_OFFSET + 30 * REGISTER_SIZE] - - /* Place LR into the saved PC, this will ensure that when - switching to this saved context with setcontext() control - will pass back to the caller of getcontext(), we have - already arranged to return the appropriate return value in x0 - above. */ - str x30, [x0, MCONTEXT_PC_OFFSET] - - /* Save the current SP */ - mov x2, sp - str x2, [x0, MCONTEXT_SP_OFFSET] - - /* Initialize the pstate. */ - str xzr, [x0, MCONTEXT_PSTATE_OFFSET] - - /* Figure out where to place the first context extension - block. */ - add x2, x0, #MCONTEXT_EXTENSION_OFFSET - - /* Write the context extension fpsimd header. */ - mov w3, #(FPSIMD_MAGIC & 0xffff) - movk w3, #(FPSIMD_MAGIC >> 16), lsl #16 - str w3, [x2, #FPSIMD_CONTEXT_MAGIC_OFFSET] - mov w3, #FPSIMD_CONTEXT_SIZE - str w3, [x2, #FPSIMD_CONTEXT_SIZE_OFFSET] - - /* Fill in the FP SIMD context. */ - add x3, x2, #(FPSIMD_CONTEXT_VREGS_OFFSET + 8 * SIMD_REGISTER_SIZE) - stp d8, d9, [x3], #(2 * SIMD_REGISTER_SIZE) - stp d10, d11, [x3], #(2 * SIMD_REGISTER_SIZE) - stp d12, d13, [x3], #(2 * SIMD_REGISTER_SIZE) - stp d14, d15, [x3], #(2 * SIMD_REGISTER_SIZE) - - add x3, x2, FPSIMD_CONTEXT_FPSR_OFFSET - - mrs x4, fpsr - str w4, [x3] - - mrs x4, fpcr - str w4, [x3, FPSIMD_CONTEXT_FPCR_OFFSET - FPSIMD_CONTEXT_FPSR_OFFSET] - - /* Write the termination context extension header. */ - add x2, x2, #FPSIMD_CONTEXT_SIZE - - str xzr, [x2, #FPSIMD_CONTEXT_MAGIC_OFFSET] - str xzr, [x2, #FPSIMD_CONTEXT_SIZE_OFFSET] - - /* Grab the signal mask */ - /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */ - add x2, x0, #UCONTEXT_SIGMASK_OFFSET - mov x0, #0 /* SIG_BLOCK */ - mov x1, #0 /* NULL */ - mov x3, #(_NSIG / 8) - mov x8, #__NR_rt_sigprocmask - svc 0 - - /* Return x0 for success */ - mov x0, 0 - ret - - .cfi_endproc - .size breakpad_getcontext, . - breakpad_getcontext - -#elif defined(__i386__) - - .text - .global breakpad_getcontext - .hidden breakpad_getcontext - .align 4 - .type breakpad_getcontext, @function - -breakpad_getcontext: - - movl 4(%esp), %eax /* eax = uc */ - - /* Save register values */ - movl %ecx, MCONTEXT_ECX_OFFSET(%eax) - movl %edx, MCONTEXT_EDX_OFFSET(%eax) - movl %ebx, MCONTEXT_EBX_OFFSET(%eax) - movl %edi, MCONTEXT_EDI_OFFSET(%eax) - movl %esi, MCONTEXT_ESI_OFFSET(%eax) - movl %ebp, MCONTEXT_EBP_OFFSET(%eax) - - movl (%esp), %edx /* return address */ - lea 4(%esp), %ecx /* exclude return address from stack */ - mov %edx, MCONTEXT_EIP_OFFSET(%eax) - mov %ecx, MCONTEXT_ESP_OFFSET(%eax) - - xorl %ecx, %ecx - movw %fs, %cx - mov %ecx, MCONTEXT_FS_OFFSET(%eax) - - movl $0, MCONTEXT_EAX_OFFSET(%eax) - - /* Save floating point state to fpregstate, then update - * the fpregs pointer to point to it */ - leal UCONTEXT_FPREGS_MEM_OFFSET(%eax), %ecx - fnstenv (%ecx) - fldenv (%ecx) - mov %ecx, UCONTEXT_FPREGS_OFFSET(%eax) - - /* Save signal mask: sigprocmask(SIGBLOCK, NULL, &uc->uc_sigmask) */ - leal UCONTEXT_SIGMASK_OFFSET(%eax), %edx - xorl %ecx, %ecx - push %edx /* &uc->uc_sigmask */ - push %ecx /* NULL */ - push %ecx /* SIGBLOCK == 0 on i386 */ - call sigprocmask@PLT - addl $12, %esp - - movl $0, %eax - ret - - .size breakpad_getcontext, . - breakpad_getcontext - -#elif defined(__mips__) - -// This implementation is inspired by implementation of getcontext in glibc. -#if _MIPS_SIM == _ABIO32 -#include <asm/asm.h> -#include <asm/regdef.h> -#include <asm/fpregdef.h> -#else -#include <machine/asm.h> -#include <machine/regdef.h> -#endif - -// from asm/asm.h -#if _MIPS_SIM == _ABIO32 -#define ALSZ 7 -#define ALMASK ~7 -#define SZREG 4 -#else // _MIPS_SIM != _ABIO32 -#define ALSZ 15 -#define ALMASK ~15 -#define SZREG 8 -#endif - -#include <asm/unistd.h> // for __NR_rt_sigprocmask - -#define _NSIG8 128 / 8 -#define SIG_BLOCK 1 - - - .text -LOCALS_NUM = 1 // save gp on stack -FRAME_SIZE = ((LOCALS_NUM * SZREG) + ALSZ) & ALMASK - -GP_FRAME_OFFSET = FRAME_SIZE - (1 * SZREG) -MCONTEXT_REG_SIZE = 8 - -#if _MIPS_SIM == _ABIO32 - -NESTED (breakpad_getcontext, FRAME_SIZE, ra) - .mask 0x00000000, 0 - .fmask 0x00000000, 0 - - .set noreorder - .cpload t9 - .set reorder - - move a2, sp -#define _SP a2 - - addiu sp, -FRAME_SIZE - .cprestore GP_FRAME_OFFSET - - sw s0, (16 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw s1, (17 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw s2, (18 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw s3, (19 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw s4, (20 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw s5, (21 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw s6, (22 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw s7, (23 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw _SP, (29 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw fp, (30 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw ra, (31 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sw ra, MCONTEXT_PC_OFFSET(a0) - -#ifdef __mips_hard_float - s.d fs0, (20 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d fs1, (22 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d fs2, (24 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d fs3, (26 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d fs4, (28 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d fs5, (30 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - - cfc1 v1, fcr31 - sw v1, MCONTEXT_FPC_CSR(a0) -#endif // __mips_hard_float - - /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */ - li a3, _NSIG8 - addu a2, a0, UCONTEXT_SIGMASK_OFFSET - move a1, zero - li a0, SIG_BLOCK - li v0, __NR_rt_sigprocmask - syscall - - addiu sp, FRAME_SIZE - jr ra - -END (breakpad_getcontext) -#else - -#ifndef NESTED -/* - * NESTED - declare nested routine entry point - */ -#define NESTED(symbol, framesize, rpc) \ - .globl symbol; \ - .align 2; \ - .type symbol,@function; \ - .ent symbol,0; \ -symbol: .frame sp, framesize, rpc; -#endif - -/* - * END - mark end of function - */ -#ifndef END -# define END(function) \ - .end function; \ - .size function,.-function -#endif - -/* int getcontext (ucontext_t *ucp) */ - -NESTED (breakpad_getcontext, FRAME_SIZE, ra) - .mask 0x10000000, 0 - .fmask 0x00000000, 0 - - move a2, sp -#define _SP a2 - move a3, gp -#define _GP a3 - - daddiu sp, -FRAME_SIZE - .cpsetup $25, GP_FRAME_OFFSET, breakpad_getcontext - - /* Store a magic flag. */ - li v1, 1 - sd v1, (0 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) /* zero */ - - sd s0, (16 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s1, (17 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s2, (18 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s3, (19 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s4, (20 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s5, (21 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s6, (22 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s7, (23 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd _GP, (28 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd _SP, (29 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd s8, (30 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd ra, (31 * MCONTEXT_REG_SIZE + MCONTEXT_GREGS_OFFSET)(a0) - sd ra, MCONTEXT_PC_OFFSET(a0) - -#ifdef __mips_hard_float - s.d $f24, (24 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d $f25, (25 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d $f26, (26 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d $f27, (27 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d $f28, (28 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d $f29, (29 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d $f30, (30 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - s.d $f31, (31 * MCONTEXT_REG_SIZE + MCONTEXT_FPREGS_OFFSET)(a0) - - cfc1 v1, $31 - sw v1, MCONTEXT_FPC_CSR(a0) -#endif /* __mips_hard_float */ - -/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */ - li a3, _NSIG8 - daddu a2, a0, UCONTEXT_SIGMASK_OFFSET - move a1, zero - li a0, SIG_BLOCK - - li v0, __NR_rt_sigprocmask - syscall - - .cpreturn - daddiu sp, FRAME_SIZE - move v0, zero - jr ra - -END (breakpad_getcontext) -#endif // _MIPS_SIM == _ABIO32 - -#elif defined(__x86_64__) -/* The x64 implementation of breakpad_getcontext was derived in part - from the implementation of libunwind which requires the following - notice. */ -/* libunwind - a platform-independent unwind library - Copyright (C) 2008 Google, Inc - Contributed by Paul Pluzhnikov <ppluzhnikov@google.com> - Copyright (C) 2010 Konstantin Belousov <kib@freebsd.org> - -This file is part of libunwind. - -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 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. */ - - .text - .global breakpad_getcontext - .hidden breakpad_getcontext - .align 4 - .type breakpad_getcontext, @function - -breakpad_getcontext: - .cfi_startproc - - /* Callee saved: RBX, RBP, R12-R15 */ - movq %r12, MCONTEXT_GREGS_R12(%rdi) - movq %r13, MCONTEXT_GREGS_R13(%rdi) - movq %r14, MCONTEXT_GREGS_R14(%rdi) - movq %r15, MCONTEXT_GREGS_R15(%rdi) - movq %rbp, MCONTEXT_GREGS_RBP(%rdi) - movq %rbx, MCONTEXT_GREGS_RBX(%rdi) - - /* Save argument registers (not strictly needed, but setcontext - restores them, so don't restore garbage). */ - movq %r8, MCONTEXT_GREGS_R8(%rdi) - movq %r9, MCONTEXT_GREGS_R9(%rdi) - movq %rdi, MCONTEXT_GREGS_RDI(%rdi) - movq %rsi, MCONTEXT_GREGS_RSI(%rdi) - movq %rdx, MCONTEXT_GREGS_RDX(%rdi) - movq %rax, MCONTEXT_GREGS_RAX(%rdi) - movq %rcx, MCONTEXT_GREGS_RCX(%rdi) - - /* Save fp state (not needed, except for setcontext not - restoring garbage). */ - leaq MCONTEXT_FPREGS_MEM(%rdi),%r8 - movq %r8, MCONTEXT_FPREGS_PTR(%rdi) - fnstenv (%r8) - stmxcsr FPREGS_OFFSET_MXCSR(%r8) - - leaq 8(%rsp), %rax /* exclude this call. */ - movq %rax, MCONTEXT_GREGS_RSP(%rdi) - - movq 0(%rsp), %rax - movq %rax, MCONTEXT_GREGS_RIP(%rdi) - - /* Save signal mask: sigprocmask(SIGBLOCK, NULL, &uc->uc_sigmask) */ - leaq UCONTEXT_SIGMASK_OFFSET(%rdi), %rdx // arg3 - xorq %rsi, %rsi // arg2 NULL - xorq %rdi, %rdi // arg1 SIGBLOCK == 0 - call sigprocmask@PLT - - /* Always return 0 for success, even if sigprocmask failed. */ - xorl %eax, %eax - ret - .cfi_endproc - .size breakpad_getcontext, . - breakpad_getcontext - -#else -#error "This file has not been ported for your CPU!" -#endif |