This register contains the failing address on Address Error and some TLB-related exceptions, and is useful for debugging purposes.
Signed-off-by: Denis Orlov <[email protected]> --- arch/mips/include/asm/stackframe.h | 4 ++++ arch/mips/lib/traps.c | 3 ++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h index 2295d7f02f..64ec37478a 100644 --- a/arch/mips/include/asm/stackframe.h +++ b/arch/mips/include/asm/stackframe.h @@ -89,8 +89,10 @@ #endif LONG_S v1, PT_EPC(sp) LONG_S $25, PT_R25(sp) + MFC0 v1, CP0_BADVADDR LONG_S $28, PT_R28(sp) LONG_S $31, PT_R31(sp) + LONG_S v1, PT_BVADDR(sp) .set pop .endm @@ -157,11 +159,13 @@ MTC0 v1, CP0_EPC LONG_L $31, PT_R31(sp) LONG_L $28, PT_R28(sp) + LONG_L v1, PT_BVADDR(sp) LONG_L $25, PT_R25(sp) #ifdef CONFIG_64BIT LONG_L $8, PT_R8(sp) LONG_L $9, PT_R9(sp) #endif + MTC0 v0, CP0_BADVADDR LONG_L $7, PT_R7(sp) LONG_L $6, PT_R6(sp) LONG_L $5, PT_R5(sp) diff --git a/arch/mips/lib/traps.c b/arch/mips/lib/traps.c index 45694fe7ef..638a511fee 100644 --- a/arch/mips/lib/traps.c +++ b/arch/mips/lib/traps.c @@ -153,7 +153,8 @@ static void show_regs(const struct pt_regs *regs) printf("Status: %08x\n", (uint32_t)regs->cp0_status); printf("Cause : %08x\n", (uint32_t)regs->cp0_cause); - printf("Config: %08x\n\n", read_c0_config()); + printf("Config: %08x\n", read_c0_config()); + printf("BadVA : %0*lx\n\n", field, regs->cp0_badvaddr); } void barebox_exc_handler(struct pt_regs *regs) -- 2.41.0
