Pass parameter to exception handler in correct register.
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
---
lib/x86/desc.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/lib/x86/desc.c b/lib/x86/desc.c
index 2f73a5a..aa0b4f4 100644
--- a/lib/x86/desc.c
+++ b/lib/x86/desc.c
@@ -111,6 +111,9 @@ struct ex_record {
extern struct ex_record exception_table_start, exception_table_end;
+#ifndef __x86_64__
+__attribute__((regparm(1)))
+#endif
void do_handle_exception(struct ex_regs *regs)
{
struct ex_record *ex;
@@ -162,7 +165,11 @@ asm (".pushsection .text \n\t"
#endif
"push %"R"di; push %"R"si; push %"R"bp; sub $"S", %"R"sp \n\t"
"push %"R"bx; push %"R"dx; push %"R"cx; push %"R"ax \n\t"
+#ifdef __x86_64__
"mov %"R"sp, %"R"di \n\t"
+#else
+ "mov %"R"sp, %"R"ax \n\t"
+#endif
"call do_handle_exception \n\t"
"pop %"R"ax; pop %"R"cx; pop %"R"dx; pop %"R"bx \n\t"
"add $"S", %"R"sp; pop %"R"bp; pop %"R"si; pop %"R"di \n\t"
--
1.7.2.3
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