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Adding mips support for Android.

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Mips linux support has been added previously in r1212. Some additional changes
are required to make breakpad functional on Android.

BUG=none
TEST=build, unittests, chrome test application

Review URL: https://breakpad.appspot.com/632002



git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1215 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
gordana.cmiljanovic@imgtec.com 2013-09-25 08:18:03 +00:00
parent ab52ca7d6e
commit db877a13bb
9 changed files with 126 additions and 8 deletions
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79
src/common/android/breakpad_getcontext.S
View file

@ -140,6 +140,85 @@ breakpad_getcontext:
.size breakpad_getcontext, . - breakpad_getcontext
#elif defined(__mips__)
#if _MIPS_SIM != _ABIO32
#error "Unsupported mips ISA. Only mips o32 is supported."
#endif
// This implementation is inspired by implementation of getcontext in glibc.
#include <asm/asm.h>
#include <asm/regdef.h>
#include <asm/fpregdef.h>
#include <asm/unistd.h> // for __NR_rt_sigprocmask
#define _NSIG8 128 / 8
#define SIG_BLOCK 1
.text
LOCALS_NUM = 2 // save gp and ra on stack
FRAME_SIZE = ((LOCALS_NUM * SZREG) + ALSZ) & ALMASK
RA_FRAME_OFFSET = FRAME_SIZE - (1 * SZREG)
GP_FRAME_OFFSET = FRAME_SIZE - (2 * SZREG)
MCONTEXT_REG_SIZE = 8
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
sw ra, RA_FRAME_OFFSET(sp)
sw gp, GP_FRAME_OFFSET(sp)
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
lw ra, RA_FRAME_OFFSET(sp)
lw gp, GP_FRAME_OFFSET(sp)
addiu sp, FRAME_SIZE
jr ra
END (breakpad_getcontext)
#else
#error "This file has not been ported for your CPU!"
#endif

13
src/common/android/breakpad_getcontext_unittest.cc
View file

@ -69,6 +69,19 @@ TEST(AndroidUContext, GRegsOffset) {
ASSERT_EQ(static_cast<size_t>(UCONTEXT_FPREGS_MEM_OFFSET),
offsetof(ucontext_t,__fpregs_mem));
#elif defined(__mips__)
ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
offsetof(ucontext_t,uc_mcontext.gregs));
// PC for mips is not part of gregs.
ASSERT_EQ(static_cast<size_t>(MCONTEXT_PC_OFFSET),
offsetof(ucontext_t,uc_mcontext.pc));
ASSERT_EQ(static_cast<size_t>(MCONTEXT_FPREGS_OFFSET),
offsetof(ucontext_t,uc_mcontext.fpregs));
ASSERT_EQ(static_cast<size_t>(MCONTEXT_FPC_CSR),
offsetof(ucontext_t,uc_mcontext.fpc_csr));
#else
ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
offsetof(ucontext_t,uc_mcontext.gregs));

1
src/common/android/include/sys/ucontext.h
View file

@ -128,7 +128,6 @@ typedef struct ucontext {
#elif defined(__mips__)
// Not supported by Google Breakpad at this point, but just in case.
typedef struct {
uint32_t regmask;
uint32_t status;

19
src/common/android/include/sys/user.h
View file

@ -120,8 +120,23 @@ struct user {
#elif defined(__mips__)
// TODO: Provide some useful definitions here, once the rest of Breakpad
// requires them.
#define _ASM_USER_H 1 // Prevent <asm/user.h> conflicts
struct user_regs_struct {
unsigned long long regs[32];
unsigned long long lo;
unsigned long long hi;
unsigned long long epc;
unsigned long long badvaddr;
unsigned long long status;
unsigned long long cause;
};
struct user_fpregs_struct {
unsigned long long regs[32];
unsigned int fpcsr;
unsigned int fir;
};
#else
# error "Unsupported Android CPU ABI"

7
src/common/android/ucontext_constants.h
View file

@ -75,8 +75,11 @@
#elif defined(__mips__)
#define MCONTEXT_GREGS_OFFSET 0
#define UCONTEXT_SIGMASK_OFFSET 0
#define MCONTEXT_PC_OFFSET 32
#define MCONTEXT_GREGS_OFFSET 40
#define MCONTEXT_FPREGS_OFFSET 296
#define MCONTEXT_FPC_CSR 556
#define UCONTEXT_SIGMASK_OFFSET 616
#else
#error "This header has not been ported for your CPU"