powerpc[64]: fix missing ctr and xer regs in syscall asm clobberlists

the ctr and xer special registers are call-clobbered and
syscall-clobbered. failure to include them in the clobber list may
result in wrong code that attempts to use a value which is no longer
present in the register after the syscall. this has been reported to
manifest newly with gcc 15.

2 files changed, 14 insertions, 14 deletions

diff --git a/arch/powerpc/syscall_arch.h b/arch/powerpc/syscall_arch.h
index 54c885cb..fe893af4 100644
--- a/arch/powerpc/syscall_arch.h
+++ b/arch/powerpc/syscall_arch.h
@@ -9,7 +9,7 @@ static inline long __syscall0(long n)
 	register long r3 __asm__("r3");
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "=r"(r3)
-	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -19,7 +19,7 @@ static inline long __syscall1(long n, long a)
 	register long r3 __asm__("r3") = a;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3)
-	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -30,7 +30,7 @@ static inline long __syscall2(long n, long a, long b)
 	register long r4 __asm__("r4") = b;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4)
-	:: "memory", "cr0", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -42,7 +42,7 @@ static inline long __syscall3(long n, long a, long b, long c)
 	register long r5 __asm__("r5") = c;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5)
-	:: "memory", "cr0", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -55,7 +55,7 @@ static inline long __syscall4(long n, long a, long b, long c, long d)
 	register long r6 __asm__("r6") = d;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6)
-	:: "memory", "cr0", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -69,7 +69,7 @@ static inline long __syscall5(long n, long a, long b, long c, long d, long e)
 	register long r7 __asm__("r7") = e;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6), "+r"(r7)
-	:: "memory", "cr0", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -84,7 +84,7 @@ static inline long __syscall6(long n, long a, long b, long c, long d, long e, lo
 	register long r8 __asm__("r8") = f;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6), "+r"(r7), "+r"(r8)
-	:: "memory", "cr0", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
diff --git a/arch/powerpc64/syscall_arch.h b/arch/powerpc64/syscall_arch.h
index 7d34fbe4..4c5d3ae9 100644
--- a/arch/powerpc64/syscall_arch.h
+++ b/arch/powerpc64/syscall_arch.h
@@ -7,7 +7,7 @@ static inline long __syscall0(long n)
 	register long r3 __asm__("r3");
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "=r"(r3)
-	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -17,7 +17,7 @@ static inline long __syscall1(long n, long a)
 	register long r3 __asm__("r3") = a;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3)
-	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -28,7 +28,7 @@ static inline long __syscall2(long n, long a, long b)
 	register long r4 __asm__("r4") = b;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4)
-	:: "memory", "cr0", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -40,7 +40,7 @@ static inline long __syscall3(long n, long a, long b, long c)
 	register long r5 __asm__("r5") = c;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5)
-	:: "memory", "cr0", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -53,7 +53,7 @@ static inline long __syscall4(long n, long a, long b, long c, long d)
 	register long r6 __asm__("r6") = d;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6)
-	:: "memory", "cr0", "r7", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r7", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -67,7 +67,7 @@ static inline long __syscall5(long n, long a, long b, long c, long d, long e)
 	register long r7 __asm__("r7") = e;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6), "+r"(r7)
-	:: "memory", "cr0", "r8", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r8", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }
 
@@ -82,7 +82,7 @@ static inline long __syscall6(long n, long a, long b, long c, long d, long e, lo
 	register long r8 __asm__("r8") = f;
 	__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
 	: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6), "+r"(r7), "+r"(r8)
-	:: "memory", "cr0", "r9", "r10", "r11", "r12");
+	:: "memory", "cr0", "r9", "r10", "r11", "r12", "ctr", "xer");
 	return r3;
 }