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Refs #173. Fixed overflow internal buffer bug of gemv_n on x86

This commit is contained in:
Zhang Xianyi 2012-12-25 09:27:49 +08:00
parent 0d1518add9
commit 69200884e1
2 changed files with 110 additions and 21 deletions
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65
kernel/x86/gemv_n_sse.S
View File

@ -89,17 +89,22 @@
#endif #endif
#define STACKSIZE 16 #define STACKSIZE 16
#define ARGS 16
#define M 4 + STACKSIZE(%esp) #define M 4 + STACKSIZE+ARGS(%esp)
#define N 8 + STACKSIZE(%esp) #define N 8 + STACKSIZE+ARGS(%esp)
#define ALPHA 16 + STACKSIZE(%esp) #define ALPHA 16 + STACKSIZE+ARGS(%esp)
#define A 20 + STACKSIZE(%esp) #define A 20 + STACKSIZE+ARGS(%esp)
#define STACK_LDA 24 + STACKSIZE(%esp) #define STACK_LDA 24 + STACKSIZE+ARGS(%esp)
#define STACK_X 28 + STACKSIZE(%esp) #define STACK_X 28 + STACKSIZE+ARGS(%esp)
#define STACK_INCX 32 + STACKSIZE(%esp) #define STACK_INCX 32 + STACKSIZE+ARGS(%esp)
#define Y 36 + STACKSIZE(%esp) #define Y 36 + STACKSIZE+ARGS(%esp)
#define STACK_INCY 40 + STACKSIZE(%esp) #define STACK_INCY 40 + STACKSIZE+ARGS(%esp)
#define BUFFER 44 + STACKSIZE(%esp) #define BUFFER 44 + STACKSIZE+ARGS(%esp)
#define MMM 0+ARGS(%esp)
#define YY 4+ARGS(%esp)
#define AA 8+ARGS(%esp)
#define LDAX 12+ARGS(%esp)
#define I %eax #define I %eax
#define J %ebx #define J %ebx
@ -114,6 +119,7 @@
PROLOGUE PROLOGUE
subl $ARGS,%esp
pushl %ebp pushl %ebp
pushl %edi pushl %edi
pushl %esi pushl %esi
@ -121,7 +127,34 @@
PROFCODE PROFCODE
movl Y,J
movl J,YY # backup Y
movl A,J
movl J,AA # backup A
movl M,J
movl J,MMM # backup MM
.L0t:
xorl J,J
addl $1,J
sall $21,J
subl J,MMM
movl J,M
jge .L00t
ALIGN_4
movl MMM,%eax
addl J,%eax
jle .L999x
movl %eax,M
.L00t:
movl AA,%eax
movl %eax,A
movl YY,J
movl J,Y
movl STACK_LDA, LDA movl STACK_LDA, LDA
movl STACK_X, X movl STACK_X, X
movl STACK_INCX, INCX movl STACK_INCX, INCX
@ -651,12 +684,22 @@
addss 0 * SIZE(X), %xmm0 addss 0 * SIZE(X), %xmm0
movss %xmm0, (Y1) movss %xmm0, (Y1)
ALIGN_3 ALIGN_3
.L999: .L999:
movl M,J
leal (,J,SIZE),%eax
addl %eax,AA
movl YY,J
addl %eax,J
movl J,YY
jmp .L0t
ALIGN_4
.L999x:
popl %ebx popl %ebx
popl %esi popl %esi
popl %edi popl %edi
popl %ebp popl %ebp
addl $ARGS,%esp
ret ret
EPILOGUE EPILOGUE

66
kernel/x86/gemv_n_sse2.S
View File

@ -76,17 +76,22 @@
#endif #endif
#define STACKSIZE 16 #define STACKSIZE 16
#define ARGS 16
#define M 4 + STACKSIZE(%esp) #define M 4 + STACKSIZE+ARGS(%esp)
#define N 8 + STACKSIZE(%esp) #define N 8 + STACKSIZE+ARGS(%esp)
#define ALPHA 16 + STACKSIZE(%esp) #define ALPHA 16 + STACKSIZE+ARGS(%esp)
#define A 24 + STACKSIZE(%esp) #define A 24 + STACKSIZE+ARGS(%esp)
#define STACK_LDA 28 + STACKSIZE(%esp) #define STACK_LDA 28 + STACKSIZE+ARGS(%esp)
#define STACK_X 32 + STACKSIZE(%esp) #define STACK_X 32 + STACKSIZE+ARGS(%esp)
#define STACK_INCX 36 + STACKSIZE(%esp) #define STACK_INCX 36 + STACKSIZE+ARGS(%esp)
#define Y 40 + STACKSIZE(%esp) #define Y 40 + STACKSIZE+ARGS(%esp)
#define STACK_INCY 44 + STACKSIZE(%esp) #define STACK_INCY 44 + STACKSIZE+ARGS(%esp)
#define BUFFER 48 + STACKSIZE(%esp) #define BUFFER 48 + STACKSIZE+ARGS(%esp)
#define MMM 0+ARGS(%esp)
#define YY 4+ARGS(%esp)
#define AA 8+ARGS(%esp)
#define I %eax #define I %eax
#define J %ebx #define J %ebx
@ -101,6 +106,8 @@
PROLOGUE PROLOGUE
subl $ARGS,%esp
pushl %ebp pushl %ebp
pushl %edi pushl %edi
pushl %esi pushl %esi
@ -108,6 +115,33 @@
PROFCODE PROFCODE
movl Y,J
movl J,YY # backup Y
movl A,J
movl J,AA # backup A
movl M,J
movl J,MMM # backup MM
.L0t:
xorl J,J
addl $1,J
sall $20,J
subl J,MMM
movl J,M
jge .L00t
ALIGN_4
movl MMM,%eax
addl J,%eax
jle .L999x
movl %eax,M
.L00t:
movl AA,%eax
movl %eax,A
movl YY,J
movl J,Y
movl STACK_LDA, LDA movl STACK_LDA, LDA
movl STACK_X, X movl STACK_X, X
movl STACK_INCX, INCX movl STACK_INCX, INCX
@ -677,10 +711,22 @@
ALIGN_3 ALIGN_3
.L999: .L999:
movl M,J
leal (,J,SIZE),%eax
addl %eax,AA
movl YY,J
addl %eax,J
movl J,YY
jmp .L0t
ALIGN_4
.L999x:
popl %ebx popl %ebx
popl %esi popl %esi
popl %edi popl %edi
popl %ebp popl %ebp
addl $ARGS,%esp
ret ret
EPILOGUE EPILOGUE