arm: add softfp support in zgemm/ztrmm vfp kernels

kernel/arm/KERNEL.ARMV6

@@ -96,25 +96,20 @@ DGEMMOTCOPY    = ../generic/gemm_tcopy_2.c
 DGEMMONCOPYOBJ = dgemm_oncopy.o
 DGEMMOTCOPYOBJ = dgemm_otcopy.o
 
-STRMMKERNEL    = strmm_kernel_4x2_vfp.S
-DTRMMKERNEL    = dtrmm_kernel_4x2_vfp.S
-CTRMMKERNEL    = ctrmm_kernel_2x2_vfp.S
-
 CGEMMKERNEL    = cgemm_kernel_2x2_vfp.S
 CGEMMONCOPY    = cgemm_ncopy_2_vfp.S
 CGEMMOTCOPY    = cgemm_tcopy_2_vfp.S
 CGEMMONCOPYOBJ = cgemm_oncopy.o
 CGEMMOTCOPYOBJ = cgemm_otcopy.o
 
+ZGEMMKERNEL    = zgemm_kernel_2x2_vfp.S
 ZGEMMONCOPY    = zgemm_ncopy_2_vfp.S
 ZGEMMOTCOPY    = zgemm_tcopy_2_vfp.S
 ZGEMMONCOPYOBJ = zgemm_oncopy.o
 ZGEMMOTCOPYOBJ = zgemm_otcopy.o
 
-ifeq ($(ARM_ABI),hard)
+STRMMKERNEL    = strmm_kernel_4x2_vfp.S
-
+DTRMMKERNEL    = dtrmm_kernel_4x2_vfp.S
+CTRMMKERNEL    = ctrmm_kernel_2x2_vfp.S
 ZTRMMKERNEL    = ztrmm_kernel_2x2_vfp.S
 
-ZGEMMKERNEL    = zgemm_kernel_2x2_vfp.S
-
-endif

kernel/arm/KERNEL.ARMV7

@@ -8,10 +8,6 @@ ZNRM2KERNEL  = nrm2_vfpv3.S
 SGEMVNKERNEL = gemv_n_vfpv3.S
 DGEMVNKERNEL = gemv_n_vfpv3.S
 
-STRMMKERNEL  =  strmm_kernel_4x4_vfpv3.S
-DTRMMKERNEL  =  dtrmm_kernel_4x4_vfpv3.S
-CTRMMKERNEL  =  ctrmm_kernel_2x2_vfpv3.S
-
 SGEMMKERNEL    =  sgemm_kernel_4x4_vfpv3.S
 SGEMMONCOPY    =  sgemm_ncopy_4_vfp.S
 SGEMMOTCOPY    =  sgemm_tcopy_4_vfp.S
@@ -25,11 +21,10 @@ DGEMMONCOPYOBJ = dgemm_oncopy.o
 DGEMMOTCOPYOBJ = dgemm_otcopy.o
 
 CGEMMKERNEL    = cgemm_kernel_2x2_vfpv3.S
-
-ifeq ($(ARM_ABI),hard)
-
-ZTRMMKERNEL  =  ztrmm_kernel_2x2_vfpv3.S
-
 ZGEMMKERNEL    = zgemm_kernel_2x2_vfpv3.S
 
-endif
+STRMMKERNEL  =  strmm_kernel_4x4_vfpv3.S
+DTRMMKERNEL  =  dtrmm_kernel_4x4_vfpv3.S
+CTRMMKERNEL  =  ctrmm_kernel_2x2_vfpv3.S
+ZTRMMKERNEL  =  ztrmm_kernel_2x2_vfpv3.S
+

kernel/arm/zgemm_kernel_2x2_vfp.S

@@ -64,9 +64,18 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ALPHA_I	[fp, #-272]
 #define ALPHA_R	[fp, #-280]
 
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHAR_SOFTFP	[fp, #4]
+#define OLD_ALPHAI_SOFTFP	[fp, #12]
+#define OLD_A_SOFTFP	[fp, #20 ]
+#define B	[fp, #24 ]
+#define C	[fp, #28 ]
+#define OLD_LDC	[fp, #32 ]
+#else
 #define B	[fp, #4 ]
 #define C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -863,6 +872,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	add	fp, sp, #24
 	sub	sp, sp, #STACKSIZE				// reserve stack
 
+#if !defined(__ARM_PCS_VFP)
+	vldr	OLD_ALPHA_R, OLD_ALPHAR_SOFTFP
+	vldr	OLD_ALPHA_I, OLD_ALPHAI_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K

kernel/arm/zgemm_kernel_2x2_vfpv3.S

@@ -80,9 +80,18 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ALPHA_I	[fp, #-272]
 #define ALPHA_R	[fp, #-280]
 
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHAR_SOFTFP	[fp, #4]
+#define OLD_ALPHAI_SOFTFP	[fp, #12]
+#define OLD_A_SOFTFP	[fp, #20 ]
+#define B	[fp, #24 ]
+#define C	[fp, #28 ]
+#define OLD_LDC	[fp, #32 ]
+#else
 #define B	[fp, #4 ]
 #define C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -909,6 +918,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	add	fp, sp, #24
 	sub	sp, sp, #STACKSIZE				// reserve stack
 
+#if !defined(__ARM_PCS_VFP)
+	vldr	OLD_ALPHA_R, OLD_ALPHAR_SOFTFP
+	vldr	OLD_ALPHA_I, OLD_ALPHAI_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K

kernel/arm/ztrmm_kernel_2x2_vfp.S

@@ -66,10 +66,20 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ALPHA_I	[fp, #-272]
 #define ALPHA_R	[fp, #-280]
 
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHAR_SOFTFP	[fp, #4]
+#define OLD_ALPHAI_SOFTFP	[fp, #12]
+#define OLD_A_SOFTFP	[fp, #20 ]
+#define B	[fp, #24 ]
+#define C	[fp, #28 ]
+#define OLD_LDC	[fp, #32 ]
+#define OFFSET  [fp, #36 ]
+#else
 #define B	[fp, #4 ]
 #define C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
 #define OFFSET  [fp, #16 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -882,6 +892,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	add	fp, sp, #24
 	sub	sp, sp, #STACKSIZE				// reserve stack
 
+#if !defined(__ARM_PCS_VFP)
+	vldr	OLD_ALPHA_R, OLD_ALPHAR_SOFTFP
+	vldr	OLD_ALPHA_I, OLD_ALPHAI_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K

kernel/arm/ztrmm_kernel_2x2_vfpv3.S

@@ -66,10 +66,20 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ALPHA_I	[fp, #-272]
 #define ALPHA_R	[fp, #-280]
 
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHAR_SOFTFP	[fp, #4]
+#define OLD_ALPHAI_SOFTFP	[fp, #12]
+#define OLD_A_SOFTFP	[fp, #20 ]
+#define B	[fp, #24 ]
+#define C	[fp, #28 ]
+#define OLD_LDC	[fp, #32 ]
+#define OFFSET  [fp, #36 ]
+#else
 #define B	[fp, #4 ]
 #define C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
 #define OFFSET  [fp, #16 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -883,6 +893,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	add	fp, sp, #24
 	sub	sp, sp, #STACKSIZE				// reserve stack
 
+#if !defined(__ARM_PCS_VFP)
+	vldr	OLD_ALPHA_R, OLD_ALPHAR_SOFTFP
+	vldr	OLD_ALPHA_I, OLD_ALPHAI_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K