powerpc: add CFUNC assembly label annotation

This macro is to be used in assembly where C functions are called.
pcrel addressing mode requires branches to functions with a
localentry value of 1 to have either a trailing nop or @notoc.
This macro permits the latter without changing callers.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Add dummy definitions to fix selftests build]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230408021752.862660-5-npiggin@gmail.com

5 files changed, 15 insertions, 15 deletions

diff --git a/arch/powerpc/lib/copypage_power7.S b/arch/powerpc/lib/copypage_power7.S
index a9844c6353cf..a783973f1215 100644
--- a/arch/powerpc/lib/copypage_power7.S
+++ b/arch/powerpc/lib/copypage_power7.S
@@ -45,7 +45,7 @@ _GLOBAL(copypage_power7)
 	std	r4,-STACKFRAMESIZE+STK_REG(R30)(r1)
 	std	r0,16(r1)
 	stdu	r1,-STACKFRAMESIZE(r1)
-	bl	enter_vmx_ops
+	bl	CFUNC(enter_vmx_ops)
 	cmpwi	r3,0
 	ld	r0,STACKFRAMESIZE+16(r1)
 	ld	r3,STK_REG(R31)(r1)
@@ -88,7 +88,7 @@ _GLOBAL(copypage_power7)
 	addi	r3,r3,128
 	bdnz	1b
 
-	b	exit_vmx_ops		/* tail call optimise */
+	b	CFUNC(exit_vmx_ops)		/* tail call optimise */
 
 #else
 	li	r0,(PAGE_SIZE/128)
diff --git a/arch/powerpc/lib/copyuser_power7.S b/arch/powerpc/lib/copyuser_power7.S
index 28f0be523c06..ac41053c3a5a 100644
--- a/arch/powerpc/lib/copyuser_power7.S
+++ b/arch/powerpc/lib/copyuser_power7.S
@@ -47,7 +47,7 @@
 	ld	r15,STK_REG(R15)(r1)
 	ld	r14,STK_REG(R14)(r1)
 .Ldo_err3:
-	bl	exit_vmx_usercopy
+	bl	CFUNC(exit_vmx_usercopy)
 	ld	r0,STACKFRAMESIZE+16(r1)
 	mtlr	r0
 	b	.Lexit
@@ -272,7 +272,7 @@ err1;	stb	r0,0(r3)
 	mflr	r0
 	std	r0,16(r1)
 	stdu	r1,-STACKFRAMESIZE(r1)
-	bl	enter_vmx_usercopy
+	bl	CFUNC(enter_vmx_usercopy)
 	cmpwi	cr1,r3,0
 	ld	r0,STACKFRAMESIZE+16(r1)
 	ld	r3,STK_REG(R31)(r1)
@@ -488,7 +488,7 @@ err3;	lbz	r0,0(r4)
 err3;	stb	r0,0(r3)
 
 15:	addi	r1,r1,STACKFRAMESIZE
-	b	exit_vmx_usercopy	/* tail call optimise */
+	b	CFUNC(exit_vmx_usercopy)	/* tail call optimise */
 
 .Lvmx_unaligned_copy:
 	/* Get the destination 16B aligned */
@@ -691,5 +691,5 @@ err3;	lbz	r0,0(r4)
 err3;	stb	r0,0(r3)
 
 15:	addi	r1,r1,STACKFRAMESIZE
-	b	exit_vmx_usercopy	/* tail call optimise */
+	b	CFUNC(exit_vmx_usercopy)	/* tail call optimise */
 #endif /* CONFIG_ALTIVEC */
diff --git a/arch/powerpc/lib/hweight_64.S b/arch/powerpc/lib/hweight_64.S
index 6effad901ef7..09af29561314 100644
--- a/arch/powerpc/lib/hweight_64.S
+++ b/arch/powerpc/lib/hweight_64.S
@@ -14,7 +14,7 @@
 
 _GLOBAL(__arch_hweight8)
 BEGIN_FTR_SECTION
-	b __sw_hweight8
+	b CFUNC(__sw_hweight8)
 	nop
 	nop
 FTR_SECTION_ELSE
@@ -26,7 +26,7 @@ EXPORT_SYMBOL(__arch_hweight8)
 
 _GLOBAL(__arch_hweight16)
 BEGIN_FTR_SECTION
-	b __sw_hweight16
+	b CFUNC(__sw_hweight16)
 	nop
 	nop
 	nop
@@ -49,7 +49,7 @@ EXPORT_SYMBOL(__arch_hweight16)
 
 _GLOBAL(__arch_hweight32)
 BEGIN_FTR_SECTION
-	b __sw_hweight32
+	b CFUNC(__sw_hweight32)
 	nop
 	nop
 	nop
@@ -75,7 +75,7 @@ EXPORT_SYMBOL(__arch_hweight32)
 
 _GLOBAL(__arch_hweight64)
 BEGIN_FTR_SECTION
-	b __sw_hweight64
+	b CFUNC(__sw_hweight64)
 	nop
 	nop
 	nop
diff --git a/arch/powerpc/lib/memcmp_64.S b/arch/powerpc/lib/memcmp_64.S
index 384218df71ba..0b9b1685a33d 100644
--- a/arch/powerpc/lib/memcmp_64.S
+++ b/arch/powerpc/lib/memcmp_64.S
@@ -44,7 +44,7 @@
 	std     r5,-STACKFRAMESIZE+STK_REG(R29)(r1); \
 	std     r0,16(r1); \
 	stdu    r1,-STACKFRAMESIZE(r1); \
-	bl      enter_vmx_ops; \
+	bl      CFUNC(enter_vmx_ops); \
 	cmpwi   cr1,r3,0; \
 	ld      r0,STACKFRAMESIZE+16(r1); \
 	ld      r3,STK_REG(R31)(r1); \
@@ -60,7 +60,7 @@
 	std     r5,-STACKFRAMESIZE+STK_REG(R29)(r1); \
 	std     r0,16(r1); \
 	stdu    r1,-STACKFRAMESIZE(r1); \
-	bl      exit_vmx_ops; \
+	bl      CFUNC(exit_vmx_ops); \
 	ld      r0,STACKFRAMESIZE+16(r1); \
 	ld      r3,STK_REG(R31)(r1); \
 	ld      r4,STK_REG(R30)(r1); \
diff --git a/arch/powerpc/lib/memcpy_power7.S b/arch/powerpc/lib/memcpy_power7.S
index 54f226333c94..9398b2b746c4 100644
--- a/arch/powerpc/lib/memcpy_power7.S
+++ b/arch/powerpc/lib/memcpy_power7.S
@@ -218,7 +218,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 	std	r5,-STACKFRAMESIZE+STK_REG(R29)(r1)
 	std	r0,16(r1)
 	stdu	r1,-STACKFRAMESIZE(r1)
-	bl	enter_vmx_ops
+	bl	CFUNC(enter_vmx_ops)
 	cmpwi	cr1,r3,0
 	ld	r0,STACKFRAMESIZE+16(r1)
 	ld	r3,STK_REG(R31)(r1)
@@ -433,7 +433,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 
 15:	addi	r1,r1,STACKFRAMESIZE
 	ld	r3,-STACKFRAMESIZE+STK_REG(R31)(r1)
-	b	exit_vmx_ops		/* tail call optimise */
+	b	CFUNC(exit_vmx_ops)		/* tail call optimise */
 
 .Lvmx_unaligned_copy:
 	/* Get the destination 16B aligned */
@@ -637,5 +637,5 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 
 15:	addi	r1,r1,STACKFRAMESIZE
 	ld	r3,-STACKFRAMESIZE+STK_REG(R31)(r1)
-	b	exit_vmx_ops		/* tail call optimise */
+	b	CFUNC(exit_vmx_ops)		/* tail call optimise */
 #endif /* CONFIG_ALTIVEC */