powerpc: Hardcode popcnt instructions for old assemblers
The popcnt instructions went into binutils relatively recently. As with a
number of other instructions, create macros and hardcode them.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 43adc8b..1255569 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -36,6 +36,8 @@
#define PPC_INST_NOP 0x60000000
#define PPC_INST_POPCNTB 0x7c0000f4
#define PPC_INST_POPCNTB_MASK 0xfc0007fe
+#define PPC_INST_POPCNTD 0x7c0003f4
+#define PPC_INST_POPCNTW 0x7c0002f4
#define PPC_INST_RFCI 0x4c000066
#define PPC_INST_RFDI 0x4c00004e
#define PPC_INST_RFMCI 0x4c00004c
@@ -88,6 +90,12 @@
__PPC_RB(b) | __PPC_EH(eh))
#define PPC_MSGSND(b) stringify_in_c(.long PPC_INST_MSGSND | \
__PPC_RB(b))
+#define PPC_POPCNTB(a, s) stringify_in_c(.long PPC_INST_POPCNTB | \
+ __PPC_RA(a) | __PPC_RS(s))
+#define PPC_POPCNTD(a, s) stringify_in_c(.long PPC_INST_POPCNTD | \
+ __PPC_RA(a) | __PPC_RS(s))
+#define PPC_POPCNTW(a, s) stringify_in_c(.long PPC_INST_POPCNTW | \
+ __PPC_RA(a) | __PPC_RS(s))
#define PPC_RFCI stringify_in_c(.long PPC_INST_RFCI)
#define PPC_RFDI stringify_in_c(.long PPC_INST_RFDI)
#define PPC_RFMCI stringify_in_c(.long PPC_INST_RFMCI)
diff --git a/arch/powerpc/lib/hweight_64.S b/arch/powerpc/lib/hweight_64.S
index ee2320b..fda2786 100644
--- a/arch/powerpc/lib/hweight_64.S
+++ b/arch/powerpc/lib/hweight_64.S
@@ -28,7 +28,7 @@
nop
nop
FTR_SECTION_ELSE
- popcntb r3,r3
+ PPC_POPCNTB(r3,r3)
clrldi r3,r3,64-8
blr
ALT_FTR_SECTION_END_IFCLR(CPU_FTR_POPCNTB)
@@ -42,14 +42,14 @@
nop
FTR_SECTION_ELSE
BEGIN_FTR_SECTION_NESTED(50)
- popcntb r3,r3
+ PPC_POPCNTB(r3,r3)
srdi r4,r3,8
add r3,r4,r3
clrldi r3,r3,64-8
blr
FTR_SECTION_ELSE_NESTED(50)
clrlwi r3,r3,16
- popcntw r3,r3
+ PPC_POPCNTW(r3,r3)
clrldi r3,r3,64-8
blr
ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 50)
@@ -66,7 +66,7 @@
nop
FTR_SECTION_ELSE
BEGIN_FTR_SECTION_NESTED(51)
- popcntb r3,r3
+ PPC_POPCNTB(r3,r3)
srdi r4,r3,16
add r3,r4,r3
srdi r4,r3,8
@@ -74,7 +74,7 @@
clrldi r3,r3,64-8
blr
FTR_SECTION_ELSE_NESTED(51)
- popcntw r3,r3
+ PPC_POPCNTW(r3,r3)
clrldi r3,r3,64-8
blr
ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 51)
@@ -93,7 +93,7 @@
nop
FTR_SECTION_ELSE
BEGIN_FTR_SECTION_NESTED(52)
- popcntb r3,r3
+ PPC_POPCNTB(r3,r3)
srdi r4,r3,32
add r3,r4,r3
srdi r4,r3,16
@@ -103,7 +103,7 @@
clrldi r3,r3,64-8
blr
FTR_SECTION_ELSE_NESTED(52)
- popcntd r3,r3
+ PPC_POPCNTD(r3,r3)
clrldi r3,r3,64-8
blr
ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_POPCNTD, 52)