[Crash-utility] [PATCH 1/6] MIPS: fix register numbers

The MIPS general purpose registers in the elf_gregset_t don't start at index 0 but at index 6. (Note that the example dump files I provided earlier use the wrong offsets; I'll make new ones). --- mips.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/mips.c b/mips.c index c181074..e5567f0 100644 --- a/mips.c +++ b/mips.c @@ -47,6 +47,11 @@ typedef ulong pte_t; #define MIPS_CPU_RIXI 0x00800000llu +#define MIPS32_EF_R0 6 +#define MIPS32_EF_R29 35 +#define MIPS32_EF_R31 37 +#define MIPS32_EF_CPU0_EPC 40 + static struct machine_specific mips_machine_specific = { 0 }; static void @@ -520,7 +525,7 @@ mips_back_trace_cmd(struct bt_info *bt) if (bt->machdep) { struct mips_regset *regs = bt->machdep; - previous.pc = current.ra = regs->regs[31]; + previous.pc = current.ra = regs->regs[MIPS32_EF_R31]; } while (INSTACK(current.sp, bt)) { @@ -614,9 +619,9 @@ mips_dumpfile_stack_frame(struct bt_info *bt, ulong *nip, ulong *ksp) } if (nip) - *nip = regs->regs[40]; + *nip = regs->regs[MIPS32_EF_CPU0_EPC]; if (ksp) - *ksp = regs->regs[29]; + *ksp = regs->regs[MIPS32_EF_R29]; } static int -- 1.7.10.4