x86: use generic register names in struct sigcontext

Switch struct sigcontext (defined in <asm/sigcontext*.h>) to using
register names withut e- or r-prefixes for both 32- and 64-bit x86.
This is intended as a preliminary step in unifying this code between
architectures.

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>

4 files changed, 46 insertions, 47 deletions

diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c
index a3a8be7618d1..4fc24a61f431 100644
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -38,15 +38,15 @@ void foo(void);
 
 void foo(void)
 {
-        OFFSET(IA32_SIGCONTEXT_eax, sigcontext, eax);
-        OFFSET(IA32_SIGCONTEXT_ebx, sigcontext, ebx);
-        OFFSET(IA32_SIGCONTEXT_ecx, sigcontext, ecx);
-        OFFSET(IA32_SIGCONTEXT_edx, sigcontext, edx);
-        OFFSET(IA32_SIGCONTEXT_esi, sigcontext, esi);
-        OFFSET(IA32_SIGCONTEXT_edi, sigcontext, edi);
-        OFFSET(IA32_SIGCONTEXT_ebp, sigcontext, ebp);
-        OFFSET(IA32_SIGCONTEXT_esp, sigcontext, esp);
-        OFFSET(IA32_SIGCONTEXT_eip, sigcontext, eip);
+        OFFSET(IA32_SIGCONTEXT_ax, sigcontext, ax);
+        OFFSET(IA32_SIGCONTEXT_bx, sigcontext, bx);
+        OFFSET(IA32_SIGCONTEXT_cx, sigcontext, cx);
+        OFFSET(IA32_SIGCONTEXT_dx, sigcontext, dx);
+        OFFSET(IA32_SIGCONTEXT_si, sigcontext, si);
+        OFFSET(IA32_SIGCONTEXT_di, sigcontext, di);
+        OFFSET(IA32_SIGCONTEXT_bp, sigcontext, bp);
+        OFFSET(IA32_SIGCONTEXT_sp, sigcontext, sp);
+        OFFSET(IA32_SIGCONTEXT_ip, sigcontext, ip);
         BLANK();
 
         OFFSET(CPUINFO_x86, cpuinfo_x86, x86);
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index 2e918ebf21d3..a05428764314 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -63,15 +63,15 @@ int main(void)
 #undef ENTRY
 #ifdef CONFIG_IA32_EMULATION
 #define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct sigcontext_ia32, entry))
-        ENTRY(eax);
-        ENTRY(ebx);
-        ENTRY(ecx);
-        ENTRY(edx);
-        ENTRY(esi);
-        ENTRY(edi);
-        ENTRY(ebp);
-        ENTRY(esp);
-        ENTRY(eip);
+        ENTRY(ax);
+        ENTRY(bx);
+        ENTRY(cx);
+        ENTRY(dx);
+        ENTRY(si);
+        ENTRY(di);
+        ENTRY(bp);
+        ENTRY(sp);
+        ENTRY(ip);
         BLANK();
 #undef ENTRY
         DEFINE(IA32_RT_SIGFRAME_sigcontext,
diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c
index 40fd3515ccf1..64cb3c05de69 100644
--- a/arch/x86/kernel/signal_32.c
+++ b/arch/x86/kernel/signal_32.c
@@ -105,7 +105,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *peax
         /* Always make any pending restarted system calls return -EINTR */
         current_thread_info()->restart_block.fn = do_no_restart_syscall;
 
-#define COPY(x)         err |= __get_user(regs->x, &sc->e ## x)
+#define COPY(x)         err |= __get_user(regs->x, &sc->x)
 
 #define COPY_SEG(seg)                                                   \
         { unsigned short tmp;                                           \
@@ -144,7 +144,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *peax
         
         {
                 unsigned int tmpflags;
-                err |= __get_user(tmpflags, &sc->eflags);
+                err |= __get_user(tmpflags, &sc->flags);
                 regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
                 regs->orig_ax = -1;             /* disable syscall checks */
         }
@@ -165,7 +165,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *peax
                 }
         }
 
-        err |= __get_user(*peax, &sc->eax);
+        err |= __get_user(*peax, &sc->ax);
         return err;
 
 badframe:
@@ -256,20 +256,20 @@ setup_sigcontext(struct sigcontext __user *sc, struct _fpstate __user *fpstate,
 
         err |= __put_user(regs->es, (unsigned int __user *)&sc->es);
         err |= __put_user(regs->ds, (unsigned int __user *)&sc->ds);
-        err |= __put_user(regs->di, &sc->edi);
-        err |= __put_user(regs->si, &sc->esi);
-        err |= __put_user(regs->bp, &sc->ebp);
-        err |= __put_user(regs->sp, &sc->esp);
-        err |= __put_user(regs->bx, &sc->ebx);
-        err |= __put_user(regs->dx, &sc->edx);
-        err |= __put_user(regs->cx, &sc->ecx);
-        err |= __put_user(regs->ax, &sc->eax);
+        err |= __put_user(regs->di, &sc->di);
+        err |= __put_user(regs->si, &sc->si);
+        err |= __put_user(regs->bp, &sc->bp);
+        err |= __put_user(regs->sp, &sc->sp);
+        err |= __put_user(regs->bx, &sc->bx);
+        err |= __put_user(regs->dx, &sc->dx);
+        err |= __put_user(regs->cx, &sc->cx);
+        err |= __put_user(regs->ax, &sc->ax);
         err |= __put_user(current->thread.trap_no, &sc->trapno);
         err |= __put_user(current->thread.error_code, &sc->err);
-        err |= __put_user(regs->ip, &sc->eip);
+        err |= __put_user(regs->ip, &sc->ip);
         err |= __put_user(regs->cs, (unsigned int __user *)&sc->cs);
-        err |= __put_user(regs->flags, &sc->eflags);
-        err |= __put_user(regs->sp, &sc->esp_at_signal);
+        err |= __put_user(regs->flags, &sc->flags);
+        err |= __put_user(regs->sp, &sc->sp_at_signal);
         err |= __put_user(regs->ss, (unsigned int __user *)&sc->ss);
 
         tmp = save_i387(fpstate);
diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 4b228fd83b31..1c9bca56fb55 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -62,11 +62,10 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, unsigned
         /* Always make any pending restarted system calls return -EINTR */
         current_thread_info()->restart_block.fn = do_no_restart_syscall;
 
-#define COPYR(x)        err |= __get_user(regs->x, &sc->r ## x)
 #define COPY(x)         err |= __get_user(regs->x, &sc->x)
 
-        COPYR(di); COPYR(si); COPYR(bp); COPYR(sp); COPYR(bx);
-        COPYR(dx); COPYR(cx); COPYR(ip);
+        COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
+        COPY(dx); COPY(cx); COPY(ip);
         COPY(r8);
         COPY(r9);
         COPY(r10);
@@ -87,7 +86,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, unsigned
 
         {
                 unsigned int tmpflags;
-                err |= __get_user(tmpflags, &sc->eflags);
+                err |= __get_user(tmpflags, &sc->flags);
                 regs->flags = (regs->flags & ~0x40DD5) | (tmpflags & 0x40DD5);
                 regs->orig_ax = -1;             /* disable syscall checks */
         }
@@ -109,7 +108,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, unsigned
                 }
         }
 
-        err |= __get_user(*prax, &sc->rax);
+        err |= __get_user(*prax, &sc->ax);
         return err;
 
 badframe:
@@ -166,14 +165,14 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, unsigned lo
         err |= __put_user(0, &sc->gs);
         err |= __put_user(0, &sc->fs);
 
-        err |= __put_user(regs->di, &sc->rdi);
-        err |= __put_user(regs->si, &sc->rsi);
-        err |= __put_user(regs->bp, &sc->rbp);
-        err |= __put_user(regs->sp, &sc->rsp);
-        err |= __put_user(regs->bx, &sc->rbx);
-        err |= __put_user(regs->dx, &sc->rdx);
-        err |= __put_user(regs->cx, &sc->rcx);
-        err |= __put_user(regs->ax, &sc->rax);
+        err |= __put_user(regs->di, &sc->di);
+        err |= __put_user(regs->si, &sc->si);
+        err |= __put_user(regs->bp, &sc->bp);
+        err |= __put_user(regs->sp, &sc->sp);
+        err |= __put_user(regs->bx, &sc->bx);
+        err |= __put_user(regs->dx, &sc->dx);
+        err |= __put_user(regs->cx, &sc->cx);
+        err |= __put_user(regs->ax, &sc->ax);
         err |= __put_user(regs->r8, &sc->r8);
         err |= __put_user(regs->r9, &sc->r9);
         err |= __put_user(regs->r10, &sc->r10);
@@ -184,8 +183,8 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, unsigned lo
         err |= __put_user(regs->r15, &sc->r15);
         err |= __put_user(me->thread.trap_no, &sc->trapno);
         err |= __put_user(me->thread.error_code, &sc->err);
-        err |= __put_user(regs->ip, &sc->rip);
-        err |= __put_user(regs->flags, &sc->eflags);
+        err |= __put_user(regs->ip, &sc->ip);
+        err |= __put_user(regs->flags, &sc->flags);
         err |= __put_user(mask, &sc->oldmask);
         err |= __put_user(me->thread.cr2, &sc->cr2);