diff options
| -rw-r--r-- | src/arch/x86/idt.S | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/arch/x86/idt.S b/src/arch/x86/idt.S index 1878f802ed..17ddb57fb7 100644 --- a/src/arch/x86/idt.S +++ b/src/arch/x86/idt.S @@ -172,9 +172,16 @@ int_hand: pushl %ecx pushl %eax - pushl %esp /* Pointer to structure on the stack */ + /* Save pointer to eregs structure */ + movl %esp, %ebp + /* Align stack to 16 bytes. */ + andl $0xfffffff0, %esp + /* Save original stack pointer while keeping stack alignment. This + value is also the eregs argument x86_exception(). */ + sub $12, %esp + pushl %ebp /* Pointer to structure on the stack */ call x86_exception - pop %eax /* Drop the pointer */ + pop %esp /* Unwind the stack alignment and argument passing. */ popl %eax popl %ecx |