(Including ARM mailing list)
From: Tarun Kanti Debbarma <a0876346@a0876346-desktop.(none)>
This patch attempts to fix two related problems:
(1) vfp_get_double(), vfp_put_double() functions have VFPv3 specific implementation
guarded within CONFIG_VFPv3 macro. The intent is to access {d16-d31} additional registers
provided in VFPv3. However, it still wrongly refers to {d0-d15}. This has been corrected.
(2) While compiling the above changes, it produced compilation error because arch/arm/vfp/Makefile
had the -mfpu=vfp option which could not recognize VFPv3 registers. This has been corrected to
-mfpu=vfp3. With this option we are also able to compile pre-VFPv3 code.
Signed-off-by: Tarun Kanti Debbarma <tarun.kanti@xxxxxx>
---
arch/arm/vfp/Makefile | 2 +-
arch/arm/vfp/vfphw.S | 8 ++++----
2 files changed, 5 insertions(+), 5 deletions(-)
mode change 100644 => 100755 arch/arm/vfp/vfphw.S
diff --git a/arch/arm/vfp/Makefile b/arch/arm/vfp/Makefile
index 39f6d8e..75855c0 100644
--- a/arch/arm/vfp/Makefile
+++ b/arch/arm/vfp/Makefile
@@ -7,7 +7,7 @@
# EXTRA_CFLAGS := -DDEBUG
# EXTRA_AFLAGS := -DDEBUG
-KBUILD_AFLAGS :=$(KBUILD_AFLAGS:-msoft-float=-Wa,-mfpu=softvfp+vfp)
+KBUILD_AFLAGS :=$(KBUILD_AFLAGS:-msoft-float=-Wa,-mfpu=vfp3 -mfloat-abi=softfp)
LDFLAGS +=--no-warn-mismatch
obj-y += vfp.o
diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S
old mode 100644
new mode 100755
index 66dc2d0..b034076
--- a/arch/arm/vfp/vfphw.S
+++ b/arch/arm/vfp/vfphw.S
@@ -254,8 +254,8 @@ ENTRY(vfp_get_double)
.endr
#ifdef CONFIG_VFPv3
@ d16 - d31 registers
- .irp dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
-1: mrrc p11, 3, r0, r1, c\dr @ fmrrd r0, r1, d\dr
+ .irp dr,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
+1: fmrrd r0, r1, d\dr
mov pc, lr
.org 1b + 8
.endr
@@ -276,8 +276,8 @@ ENTRY(vfp_put_double)
.endr
#ifdef CONFIG_VFPv3
@ d16 - d31 registers
- .irp dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
-1: mcrr p11, 3, r1, r2, c\dr @ fmdrr r1, r2, d\dr
+ .irp dr,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
+1: fmdrr d\dr, r1, r2
mov pc, lr
.org 1b + 8
.endr
--
1.6.0.4
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