[ARM] 4583/1: ARMv7: Add VFPv3 support
This patch adds the support for VFPv3 (the kernel currently supports
VFPv2). The main difference is 32 double registers (compared to 16).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/fpstate.h b/include/asm-arm/fpstate.h
index f31cda5..392eb53 100644
--- a/include/asm-arm/fpstate.h
+++ b/include/asm-arm/fpstate.h
@@ -17,14 +17,18 @@
/*
* VFP storage area has:
* - FPEXC, FPSCR, FPINST and FPINST2.
- * - 16 double precision data registers
- * - an implementation-dependant word of state for FLDMX/FSTMX
+ * - 16 or 32 double precision data registers
+ * - an implementation-dependant word of state for FLDMX/FSTMX (pre-ARMv6)
*
* FPEXC will always be non-zero once the VFP has been used in this process.
*/
struct vfp_hard_struct {
+#ifdef CONFIG_VFPv3
+ __u64 fpregs[32];
+#else
__u64 fpregs[16];
+#endif
#if __LINUX_ARM_ARCH__ < 6
__u32 fpmx_state;
#endif
@@ -35,6 +39,7 @@
*/
__u32 fpinst;
__u32 fpinst2;
+
#ifdef CONFIG_SMP
__u32 cpu;
#endif