From: Denis Orlov <denorl2009@gmail.com>
To: barebox@lists.infradead.org
Cc: Denis Orlov <denorl2009@gmail.com>,
Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH 07/21] MIPS: print BadVAddr CP0 register on exception
Date: Tue, 25 Jul 2023 08:05:08 +0300 [thread overview]
Message-ID: <20230725050618.3451-8-denorl2009@gmail.com> (raw)
In-Reply-To: <20230725050618.3451-1-denorl2009@gmail.com>
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 <denorl2009@gmail.com>
---
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
next prev parent reply other threads:[~2023-07-25 5:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-25 5:05 [PATCH 00/21] MIPS: semi-random code improvements Denis Orlov
2023-07-25 5:05 ` [PATCH 01/21] MIPS: addrspace: rectify ksseg segment naming Denis Orlov
2023-07-25 5:05 ` [PATCH 02/21] MIPS: addrspace: simplify the header Denis Orlov
2023-07-25 5:05 ` [PATCH 03/21] MIPS: main_entry-pbl: remove unused variable Denis Orlov
2023-07-25 5:05 ` [PATCH 04/21] MIPS: barebox.lds: remove extra whitespace Denis Orlov
2023-07-25 5:05 ` [PATCH 05/21] MIPS: reloc: mark relocate_code() as noreturn Denis Orlov
2023-07-25 5:05 ` [PATCH 06/21] MIPS: cpuinfo: use appropriate format specifiers in printf Denis Orlov
2023-07-25 5:05 ` Denis Orlov [this message]
2023-07-25 5:05 ` [PATCH 08/21] MIPS: malta: merge GT64120 headers Denis Orlov
2023-07-25 5:05 ` [PATCH 09/21] MIPS: pbl_macros: use .asciiz instead of .ascii + .byte 0 Denis Orlov
2023-07-25 5:05 ` [PATCH 10/21] MIPS: malta: remove duplicated barebox magic code Denis Orlov
2023-07-25 5:05 ` [PATCH 11/21] MIPS: pbl: put mips_barebox_10h into ENTRY_FUNCTION Denis Orlov
2023-07-25 5:05 ` [PATCH 12/21] MIPS: pbl: make sure to disable interrupts/watchpoints on entry Denis Orlov
2023-07-25 5:05 ` [PATCH 13/21] MIPS: pbl: do enable 64-bit addressing in PBL Denis Orlov
2023-07-25 5:05 ` [PATCH 14/21] MIPS: clean up barebox proper entry point Denis Orlov
2023-07-25 5:05 ` [PATCH 15/21] MIPS: main_entry: properly set XTLB handler for 64-bit mode Denis Orlov
2023-07-25 5:05 ` [PATCH 16/21] MIPS: main_entry: remove exception vector array Denis Orlov
2023-07-25 5:05 ` [PATCH 17/21] MIPS: c-r4k: prettify code in __BUILD_BLAST_CACHE_RANGE Denis Orlov
2023-07-25 5:05 ` [PATCH 18/21] MIPS: c-r4k: generate blast_*cache functions via macros Denis Orlov
2023-07-25 5:05 ` [PATCH 19/21] MIPS: c-r4k: do flush secondary cache Denis Orlov
2023-07-25 5:05 ` [PATCH 20/21] MIPS: c-r4k: remove extra function declaration Denis Orlov
2023-07-25 5:05 ` [PATCH 21/21] MIPS: reloc: use IS_ALIGNED macro to check for an alignment Denis Orlov
2023-07-27 5:09 ` [PATCH 00/21] MIPS: semi-random code improvements Sascha Hauer
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