x86: rename the struct pt_regs members for 32/64-bit consistency
We have a lot of code which differs only by the naming of specific
members of structures that contain registers. In order to enable
additional unifications, this patch drops the e- or r- size prefix
from the register names in struct pt_regs, and drops the x- prefixes
for segment registers on the 32-bit side.
This patch also performs the equivalent renames in some additional
places that might be candidates for unification in the future.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index d3fde94..b49616b 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -70,7 +70,7 @@
{
struct pt_regs *old_regs;
/* high bit used in ret_from_ code */
- int irq = ~regs->orig_eax;
+ int irq = ~regs->orig_ax;
struct irq_desc *desc = irq_desc + irq;
#ifdef CONFIG_4KSTACKS
union irq_ctx *curctx, *irqctx;
@@ -88,13 +88,13 @@
#ifdef CONFIG_DEBUG_STACKOVERFLOW
/* Debugging check for stack overflow: is there less than 1KB free? */
{
- long esp;
+ long sp;
__asm__ __volatile__("andl %%esp,%0" :
- "=r" (esp) : "0" (THREAD_SIZE - 1));
- if (unlikely(esp < (sizeof(struct thread_info) + STACK_WARN))) {
+ "=r" (sp) : "0" (THREAD_SIZE - 1));
+ if (unlikely(sp < (sizeof(struct thread_info) + STACK_WARN))) {
printk("do_IRQ: stack overflow: %ld\n",
- esp - sizeof(struct thread_info));
+ sp - sizeof(struct thread_info));
dump_stack();
}
}
@@ -112,7 +112,7 @@
* current stack (which is the irq stack already after all)
*/
if (curctx != irqctx) {
- int arg1, arg2, ebx;
+ int arg1, arg2, bx;
/* build the stack frame on the IRQ stack */
isp = (u32*) ((char*)irqctx + sizeof(*irqctx));
@@ -128,10 +128,10 @@
(curctx->tinfo.preempt_count & SOFTIRQ_MASK);
asm volatile(
- " xchgl %%ebx,%%esp \n"
- " call *%%edi \n"
- " movl %%ebx,%%esp \n"
- : "=a" (arg1), "=d" (arg2), "=b" (ebx)
+ " xchgl %%ebx,%%esp \n"
+ " call *%%edi \n"
+ " movl %%ebx,%%esp \n"
+ : "=a" (arg1), "=d" (arg2), "=b" (bx)
: "0" (irq), "1" (desc), "2" (isp),
"D" (desc->handle_irq)
: "memory", "cc"