42 lines
1.4 KiB
Diff
42 lines
1.4 KiB
Diff
From 31a69d378efb4319a5b9ef8cf3d7a93030f5c863 Mon Sep 17 00:00:00 2001
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From: Ming Wang <wangming01@loongson.cn>
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Date: Mon, 9 Jun 2025 11:03:02 +0800
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Subject: [PATCH 4/5] Fix crash initialization failure on LoongArch with recent
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GDB versions
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The crash tool failed to initialize on LoongArch64 when using
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GDB 16.2 (and likely other recent GDB versions that have enhanced
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LoongArch support) due to the error:
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"fatal error: buffer size is not enough to fit register value".
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This occurs in supply_registers() because GDB now correctly
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reports the size of LoongArch LASX (256-bit) vector registers
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(xr0-xr31) as 32 bytes. The `regval` buffer in `crash_target.c`
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was previously fixed at 16 bytes.
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This patch increases the `regval` buffer size to 32 bytes to
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accommodate the largest LoongArch registers reported by GDB.
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This allows crash to initialize successfully.
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Signed-off-by: Ming Wang <wangming01@loongson.cn>
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---
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crash_target.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/crash_target.c b/crash_target.c
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index ad1480c..49c6e88 100644
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--- a/crash_target.c
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+++ b/crash_target.c
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@@ -80,7 +80,7 @@ public:
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static void supply_registers(struct regcache *regcache, int regno)
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{
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- gdb_byte regval[16];
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+ gdb_byte regval[32];
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struct gdbarch *arch = regcache->arch ();
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const char *regname = gdbarch_register_name(arch, regno);
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int regsize = register_size(arch, regno);
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--
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2.47.0
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