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>

arch/x86/ia32/ia32_signal.c

@@ -192,9 +192,9 @@ struct rt_sigframe
 	char retcode[8];
 };
 
-#define COPY(x)		{ \
-	unsigned int reg;			\
-	err |= __get_user(reg, &sc->e ##x);	\
+#define COPY(x)		{ 		\
+	unsigned int reg;		\
+	err |= __get_user(reg, &sc->x);	\
 	regs->x = reg;			\
 }
 
@@ -248,7 +248,7 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
 	err |= __get_user(regs->ss, &sc->ss);
 	regs->ss |= 3;
 
-	err |= __get_user(tmpflags, &sc->eflags);
+	err |= __get_user(tmpflags, &sc->flags);
 	regs->flags = (regs->flags & ~0x40DD5) | (tmpflags & 0x40DD5);
 	/* disable syscall checks */
 	regs->orig_ax = -1;
@@ -268,7 +268,7 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
 		}
 	}
 
-	err |= __get_user(tmp, &sc->eax);
+	err |= __get_user(tmp, &sc->ax);
 	*peax = tmp;
 
 	return err;
@@ -361,21 +361,21 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
 	__asm__("movl %%es,%0" : "=r"(tmp): "0"(tmp));
 	err |= __put_user(tmp, (unsigned int __user *)&sc->es);
 
-	err |= __put_user((u32)regs->di, &sc->edi);
-	err |= __put_user((u32)regs->si, &sc->esi);
-	err |= __put_user((u32)regs->bp, &sc->ebp);
-	err |= __put_user((u32)regs->sp, &sc->esp);
-	err |= __put_user((u32)regs->bx, &sc->ebx);
-	err |= __put_user((u32)regs->dx, &sc->edx);
-	err |= __put_user((u32)regs->cx, &sc->ecx);
-	err |= __put_user((u32)regs->ax, &sc->eax);
+	err |= __put_user((u32)regs->di, &sc->di);
+	err |= __put_user((u32)regs->si, &sc->si);
+	err |= __put_user((u32)regs->bp, &sc->bp);
+	err |= __put_user((u32)regs->sp, &sc->sp);
+	err |= __put_user((u32)regs->bx, &sc->bx);
+	err |= __put_user((u32)regs->dx, &sc->dx);
+	err |= __put_user((u32)regs->cx, &sc->cx);
+	err |= __put_user((u32)regs->ax, &sc->ax);
 	err |= __put_user((u32)regs->cs, &sc->cs);
 	err |= __put_user((u32)regs->ss, &sc->ss);
 	err |= __put_user(current->thread.trap_no, &sc->trapno);
 	err |= __put_user(current->thread.error_code, &sc->err);
-	err |= __put_user((u32)regs->ip, &sc->eip);
-	err |= __put_user((u32)regs->flags, &sc->eflags);
-	err |= __put_user((u32)regs->sp, &sc->esp_at_signal);
+	err |= __put_user((u32)regs->ip, &sc->ip);
+	err |= __put_user((u32)regs->flags, &sc->flags);
+	err |= __put_user((u32)regs->sp, &sc->sp_at_signal);
 
 	tmp = save_i387_ia32(current, fpstate, regs, 0);
 	if (tmp < 0)

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);

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,

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);

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);
 

arch/x86/vdso/vdso32/sigreturn.S

@@ -92,27 +92,27 @@ __kernel_rt_sigreturn:
 	.sleb128 offset;		/*       offset */		\
 1:
 
-	do_cfa_expr(IA32_SIGCONTEXT_esp+4)
-	do_expr(0, IA32_SIGCONTEXT_eax+4)
-	do_expr(1, IA32_SIGCONTEXT_ecx+4)
-	do_expr(2, IA32_SIGCONTEXT_edx+4)
-	do_expr(3, IA32_SIGCONTEXT_ebx+4)
-	do_expr(5, IA32_SIGCONTEXT_ebp+4)
-	do_expr(6, IA32_SIGCONTEXT_esi+4)
-	do_expr(7, IA32_SIGCONTEXT_edi+4)
-	do_expr(8, IA32_SIGCONTEXT_eip+4)
+	do_cfa_expr(IA32_SIGCONTEXT_sp+4)
+	do_expr(0, IA32_SIGCONTEXT_ax+4)
+	do_expr(1, IA32_SIGCONTEXT_cx+4)
+	do_expr(2, IA32_SIGCONTEXT_dx+4)
+	do_expr(3, IA32_SIGCONTEXT_bx+4)
+	do_expr(5, IA32_SIGCONTEXT_bp+4)
+	do_expr(6, IA32_SIGCONTEXT_si+4)
+	do_expr(7, IA32_SIGCONTEXT_di+4)
+	do_expr(8, IA32_SIGCONTEXT_ip+4)
 
 	.byte 0x42	/* DW_CFA_advance_loc 2 -- nop; popl eax. */
 
-	do_cfa_expr(IA32_SIGCONTEXT_esp)
-	do_expr(0, IA32_SIGCONTEXT_eax)
-	do_expr(1, IA32_SIGCONTEXT_ecx)
-	do_expr(2, IA32_SIGCONTEXT_edx)
-	do_expr(3, IA32_SIGCONTEXT_ebx)
-	do_expr(5, IA32_SIGCONTEXT_ebp)
-	do_expr(6, IA32_SIGCONTEXT_esi)
-	do_expr(7, IA32_SIGCONTEXT_edi)
-	do_expr(8, IA32_SIGCONTEXT_eip)
+	do_cfa_expr(IA32_SIGCONTEXT_sp)
+	do_expr(0, IA32_SIGCONTEXT_ax)
+	do_expr(1, IA32_SIGCONTEXT_cx)
+	do_expr(2, IA32_SIGCONTEXT_dx)
+	do_expr(3, IA32_SIGCONTEXT_bx)
+	do_expr(5, IA32_SIGCONTEXT_bp)
+	do_expr(6, IA32_SIGCONTEXT_si)
+	do_expr(7, IA32_SIGCONTEXT_di)
+	do_expr(8, IA32_SIGCONTEXT_ip)
 
 	.align 4
 .LENDFDEDLSI1:
@@ -129,15 +129,15 @@ __kernel_rt_sigreturn:
 	   slightly less complicated than the above, since we don't
 	   modify the stack pointer in the process.  */
 
-	do_cfa_expr(IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_esp)
-	do_expr(0, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_eax)
-	do_expr(1, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ecx)
-	do_expr(2, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_edx)
-	do_expr(3, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ebx)
-	do_expr(5, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ebp)
-	do_expr(6, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_esi)
-	do_expr(7, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_edi)
-	do_expr(8, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_eip)
+	do_cfa_expr(IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_sp)
+	do_expr(0, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ax)
+	do_expr(1, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_cx)
+	do_expr(2, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_dx)
+	do_expr(3, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_bx)
+	do_expr(5, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_bp)
+	do_expr(6, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_si)
+	do_expr(7, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_di)
+	do_expr(8, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ip)
 
 	.align 4
 .LENDFDEDLSI2:

include/asm-x86/sigcontext.h

@@ -63,20 +63,20 @@ struct sigcontext {
 	unsigned short fs, __fsh;
 	unsigned short es, __esh;
 	unsigned short ds, __dsh;
-	unsigned long edi;
-	unsigned long esi;
-	unsigned long ebp;
-	unsigned long esp;
-	unsigned long ebx;
-	unsigned long edx;
-	unsigned long ecx;
-	unsigned long eax;
+	unsigned long di;
+	unsigned long si;
+	unsigned long bp;
+	unsigned long sp;
+	unsigned long bx;
+	unsigned long dx;
+	unsigned long cx;
+	unsigned long ax;
 	unsigned long trapno;
 	unsigned long err;
-	unsigned long eip;
+	unsigned long ip;
 	unsigned short cs, __csh;
-	unsigned long eflags;
-	unsigned long esp_at_signal;
+	unsigned long flags;
+	unsigned long sp_at_signal;
 	unsigned short ss, __ssh;
 	struct _fpstate __user * fpstate;
 	unsigned long oldmask;
@@ -111,16 +111,16 @@ struct sigcontext {
 	unsigned long r13;
 	unsigned long r14;
 	unsigned long r15;
-	unsigned long rdi;
-	unsigned long rsi;
-	unsigned long rbp;
-	unsigned long rbx;
-	unsigned long rdx;
-	unsigned long rax;
-	unsigned long rcx;
-	unsigned long rsp;
-	unsigned long rip;
-	unsigned long eflags;		/* RFLAGS */
+	unsigned long di;
+	unsigned long si;
+	unsigned long bp;
+	unsigned long bx;
+	unsigned long dx;
+	unsigned long ax;
+	unsigned long cx;
+	unsigned long sp;
+	unsigned long ip;
+	unsigned long flags;
 	unsigned short cs;
 	unsigned short gs;
 	unsigned short fs;

include/asm-x86/sigcontext32.h

@@ -48,20 +48,20 @@ struct sigcontext_ia32 {
        unsigned short fs, __fsh;
        unsigned short es, __esh;
        unsigned short ds, __dsh;
-       unsigned int edi;
-       unsigned int esi;
-       unsigned int ebp;
-       unsigned int esp;
-       unsigned int ebx;
-       unsigned int edx;
-       unsigned int ecx;
-       unsigned int eax;
+       unsigned int di;
+       unsigned int si;
+       unsigned int bp;
+       unsigned int sp;
+       unsigned int bx;
+       unsigned int dx;
+       unsigned int cx;
+       unsigned int ax;
        unsigned int trapno;
        unsigned int err;
-       unsigned int eip;
+       unsigned int ip;
        unsigned short cs, __csh;
-       unsigned int eflags;
-       unsigned int esp_at_signal;
+       unsigned int flags;
+       unsigned int sp_at_signal;
        unsigned short ss, __ssh;
        unsigned int fpstate;		/* really (struct _fpstate_ia32 *) */
        unsigned int oldmask;