arm: add softfp support in dgemm/dtrmm vfp kernels

kernel/arm/KERNEL.ARMV6

@@ -72,7 +72,6 @@ DGEMVTKERNEL = gemv_t_vfp.S
 CGEMVTKERNEL = cgemv_t_vfp.S
 ZGEMVTKERNEL = zgemv_t_vfp.S
 
-SGEMMKERNEL    = ../generic/gemmkernel_4x2.c
 SGEMMKERNEL    = sgemm_kernel_4x2_vfp.S
 ifneq ($(SGEMM_UNROLL_M), $(SGEMM_UNROLL_N))
 SGEMMINCOPY    = sgemm_ncopy_4_vfp.S
@@ -85,7 +84,7 @@ SGEMMOTCOPY    = ../generic/gemm_tcopy_2.c
 SGEMMONCOPYOBJ = sgemm_oncopy.o
 SGEMMOTCOPYOBJ = sgemm_otcopy.o
 
-DGEMMKERNEL    = ../generic/gemmkernel_4x2.c
+DGEMMKERNEL    = dgemm_kernel_4x2_vfp.S
 ifneq ($(DGEMM_UNROLL_M), $(DGEMM_UNROLL_N))
 DGEMMINCOPY    = dgemm_ncopy_4_vfp.S
 DGEMMITCOPY    = dgemm_tcopy_4_vfp.S
@@ -97,9 +96,8 @@ DGEMMOTCOPY    = ../generic/gemm_tcopy_2.c
 DGEMMONCOPYOBJ = dgemm_oncopy.o
 DGEMMOTCOPYOBJ = dgemm_otcopy.o
 
-STRMMKERNEL    = ../generic/trmmkernel_4x2.c
 STRMMKERNEL    = strmm_kernel_4x2_vfp.S
-DTRMMKERNEL    = ../generic/trmmkernel_4x2.c
+DTRMMKERNEL    = dtrmm_kernel_4x2_vfp.S
 
 CGEMMONCOPY    = cgemm_ncopy_2_vfp.S
 CGEMMOTCOPY    = cgemm_tcopy_2_vfp.S
@@ -113,11 +111,9 @@ ZGEMMOTCOPYOBJ = zgemm_otcopy.o
 
 ifeq ($(ARM_ABI),hard)
 
-DTRMMKERNEL    = dtrmm_kernel_4x2_vfp.S
 CTRMMKERNEL    = ctrmm_kernel_2x2_vfp.S
 ZTRMMKERNEL    = ztrmm_kernel_2x2_vfp.S
 
-DGEMMKERNEL    = dgemm_kernel_4x2_vfp.S
 CGEMMKERNEL    = cgemm_kernel_2x2_vfp.S
 ZGEMMKERNEL    = zgemm_kernel_2x2_vfp.S
 

kernel/arm/KERNEL.ARMV7

@@ -8,8 +8,8 @@ ZNRM2KERNEL  = nrm2_vfpv3.S
 SGEMVNKERNEL = gemv_n_vfpv3.S
 DGEMVNKERNEL = gemv_n_vfpv3.S
 
-STRMMKERNEL    = ../generic/trmmkernel_4x4.c
-DTRMMKERNEL    = ../generic/trmmkernel_4x4.c
+STRMMKERNEL  =  strmm_kernel_4x4_vfpv3.S
+DTRMMKERNEL  =  dtrmm_kernel_4x4_vfpv3.S
 
 SGEMMKERNEL    =  sgemm_kernel_4x4_vfpv3.S
 SGEMMONCOPY    =  sgemm_ncopy_4_vfp.S
@@ -17,7 +17,7 @@ SGEMMOTCOPY    =  sgemm_tcopy_4_vfp.S
 SGEMMONCOPYOBJ =  sgemm_oncopy.o
 SGEMMOTCOPYOBJ =  sgemm_otcopy.o
 
-DGEMMKERNEL    = ../generic/gemmkernel_4x4.c
+DGEMMKERNEL    =  dgemm_kernel_4x4_vfpv3.S
 DGEMMONCOPY    =  dgemm_ncopy_4_vfp.S
 DGEMMOTCOPY    =  dgemm_tcopy_4_vfp.S
 DGEMMONCOPYOBJ = dgemm_oncopy.o
@@ -25,13 +25,9 @@ DGEMMOTCOPYOBJ = dgemm_otcopy.o
 
 ifeq ($(ARM_ABI),hard)
 
-STRMMKERNEL  =  strmm_kernel_4x4_vfpv3.S
-DTRMMKERNEL  =  dtrmm_kernel_4x4_vfpv3.S
 CTRMMKERNEL  =  ctrmm_kernel_2x2_vfpv3.S
 ZTRMMKERNEL  =  ztrmm_kernel_2x2_vfpv3.S
 
-DGEMMKERNEL    =  dgemm_kernel_4x4_vfpv3.S
-
 CGEMMKERNEL    = cgemm_kernel_2x2_vfpv3.S
 ZGEMMKERNEL    = zgemm_kernel_2x2_vfpv3.S
 

kernel/arm/dgemm_kernel_4x2_vfp.S

@@ -62,10 +62,17 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #define ALPHA	[fp, #-280]
 
-
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHA_SOFTFP	[fp, #4]
+#define OLD_A_SOFTFP	[fp, #12 ]
+#define B	[fp, #16 ]
+#define C	[fp, #20 ]
+#define OLD_LDC	[fp, #24 ]
+#else
 #define B	[fp, #4 ]
 #define C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -429,6 +436,10 @@ 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, OLD_ALPHA_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K

kernel/arm/dgemm_kernel_4x4_vfpv3.S

@@ -79,9 +79,17 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #define ALPHA	[fp, #-280]
 
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHA_SOFTFP	[fp, #4]
+#define OLD_A_SOFTFP	[fp, #12 ]
+#define B	[fp, #16 ]
+#define C	[fp, #20 ]
+#define OLD_LDC	[fp, #24 ]
+#else
 #define B	[fp, #4 ]
 #define C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -878,6 +886,10 @@ 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, OLD_ALPHA_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K

kernel/arm/dtrmm_kernel_4x2_vfp.S

@@ -65,10 +65,19 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #define ALPHA	[fp, #-276 ]
 
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHA_SOFTFP	[fp, #4]
+#define OLD_A_SOFTFP	[fp, #12 ]
+#define B	[fp, #16 ]
+#define OLD_C	[fp, #20 ]
+#define OLD_LDC	[fp, #24 ]
+#define OFFSET  [fp, #28 ]
+#else
 #define B	[fp, #4 ]
 #define OLD_C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
 #define OFFSET  [fp, #16 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -404,6 +413,10 @@ 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, OLD_ALPHA_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K

kernel/arm/dtrmm_kernel_4x4_vfpv3.S

@@ -66,10 +66,19 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #define ALPHA	[fp, #-276 ]
 
+#if !defined(__ARM_PCS_VFP)
+#define OLD_ALPHA_SOFTFP	[fp, #4]
+#define OLD_A_SOFTFP	[fp, #12 ]
+#define B	[fp, #16 ]
+#define OLD_C	[fp, #20 ]
+#define OLD_LDC	[fp, #24 ]
+#define OFFSET  [fp, #28 ]
+#else
 #define B	[fp, #4 ]
 #define OLD_C	[fp, #8 ]
 #define OLD_LDC	[fp, #12 ]
 #define OFFSET  [fp, #16 ]
+#endif
 
 #define I	r0
 #define J	r1
@@ -846,6 +855,10 @@ 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, OLD_ALPHA_SOFTFP
+	ldr	OLD_A, OLD_A_SOFTFP
+#endif
 	str	OLD_M, M
 	str	OLD_N, N
 	str	OLD_K, K