[patch][1/5] powerpc V2: Add the implementations to handle SPFP instruction exceptions
ebony.zhu at freescale.com
ebony.zhu at freescale.com
Thu Feb 8 14:51:13 EST 2007
Add the implementations to handle SPFP instruction exceptions
complying with IEEE-754.
Signed-off-by:Ebony Zhu <ebony.zhu at freescale.com>
---
arch/powerpc/math-emu/efsabs.c | 16 ++++++++++++++
arch/powerpc/math-emu/efsadd.c | 36 ++++++++++++++++++++++++++++++
arch/powerpc/math-emu/efscfd.c | 37 +++++++++++++++++++++++++++++++
arch/powerpc/math-emu/efscmpeq.c | 45 ++++++++++++++++++++++++++++++++++++++
arch/powerpc/math-emu/efscmpgt.c | 45 ++++++++++++++++++++++++++++++++++++++
arch/powerpc/math-emu/efscmplt.c | 45 ++++++++++++++++++++++++++++++++++++++
arch/powerpc/math-emu/efsctsf.c | 29 ++++++++++++++++++++++++
arch/powerpc/math-emu/efsctsi.c | 26 ++++++++++++++++++++++
arch/powerpc/math-emu/efsctsiz.c | 26 ++++++++++++++++++++++
arch/powerpc/math-emu/efsctuf.c | 28 ++++++++++++++++++++++++
arch/powerpc/math-emu/efsctui.c | 26 ++++++++++++++++++++++
arch/powerpc/math-emu/efsctuiz.c | 26 ++++++++++++++++++++++
arch/powerpc/math-emu/efsdiv.c | 36 ++++++++++++++++++++++++++++++
arch/powerpc/math-emu/efsmul.c | 38 ++++++++++++++++++++++++++++++++
arch/powerpc/math-emu/efsnabs.c | 16 ++++++++++++++
arch/powerpc/math-emu/efsneg.c | 16 ++++++++++++++
arch/powerpc/math-emu/efssub.c | 39 +++++++++++++++++++++++++++++++++
17 files changed, 530 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/math-emu/efsabs.c b/arch/powerpc/math-emu/efsabs.c
new file mode 100644
index 0000000..083cc46
--- /dev/null
+++ b/arch/powerpc/math-emu/efsabs.c
@@ -0,0 +1,16 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+int
+efsabs(u32 *rD, u32 *rA)
+{
+ rD[0] = rA[0] & 0x7fffffff;
+
+#ifdef DEBUG
+ printk("%s: D %p, A %p: ", __FUNCTION__, rD, rA);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsadd.c b/arch/powerpc/math-emu/efsadd.c
new file mode 100644
index 0000000..a09e216
--- /dev/null
+++ b/arch/powerpc/math-emu/efsadd.c
@@ -0,0 +1,36 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsadd(void *rD, void *rA, void *rB)
+{
+ FP_DECL_S(A);
+ FP_DECL_S(B);
+ FP_DECL_S(R);
+ int ret = 0;
+
+#ifdef DEBUG
+ printk("%s: %p %p %p\n", __FUNCTION__, rD, rA, rB);
+#endif
+
+ __FP_UNPACK_S(A, rA);
+ __FP_UNPACK_S(B, rB);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld)\n", A_s, A_f, A_e, A_c);
+ printk("B: %ld %lu %ld (%ld)\n", B_s, B_f, B_e, B_c);
+#endif
+
+ FP_ADD_S(R, A, B);
+
+#ifdef DEBUG
+ printk("D: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
+#endif
+
+ return (ret | __FP_PACK_S(rD, R));
+}
diff --git a/arch/powerpc/math-emu/efscfd.c b/arch/powerpc/math-emu/efscfd.c
new file mode 100644
index 0000000..f2c2920
--- /dev/null
+++ b/arch/powerpc/math-emu/efscfd.c
@@ -0,0 +1,37 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "double.h"
+#include "single.h"
+
+int
+efscfd(void *rD, u64 *rB)
+{
+ FP_DECL_D(B);
+ FP_DECL_S(R);
+ int ret;
+ u32 tmp;
+ tmp = rB[0] >> 32;
+ rB[0] = rB[0] <<32 | tmp;
+
+#ifdef DEBUG
+ printk("%s: S %p, ea %p\n", __FUNCTION__, rD, rB);
+#endif
+
+ __FP_UNPACK_D(B, rB);
+
+#ifdef DEBUG
+ printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
+#endif
+
+ FP_CONV(S, D, 1, 2, R, B);
+
+#ifdef DEBUG
+ printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
+#endif
+
+ return (ret | __FP_PACK_S(rD, R));
+}
diff --git a/arch/powerpc/math-emu/efscmpeq.c b/arch/powerpc/math-emu/efscmpeq.c
new file mode 100644
index 0000000..8ad0d9d
--- /dev/null
+++ b/arch/powerpc/math-emu/efscmpeq.c
@@ -0,0 +1,45 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efscmpeq(u32 *ccr, int crD, void *rA, void *rB)
+{
+ FP_DECL_S(A);
+ FP_DECL_S(B);
+ long cmp;
+ int ret = 0;
+
+#ifdef DEBUG
+ printk("%s: %p (%08x) %d %p %p\n", __FUNCTION__, ccr, *ccr, crD, rA, rB);
+#endif
+
+ __FP_UNPACK_S(A, rA);
+ __FP_UNPACK_S(B, rB);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld)\n", A_s, A_f, A_e, A_c);
+ printk("B: %ld %lu %ld (%ld)\n", B_s, B_f, B_e, B_c);
+#endif
+
+ FP_CMP_S(cmp, A, B, 2);
+
+ if (cmp == 0) {
+ cmp = 0x4;
+ } else {
+ cmp = 0;
+ }
+
+ *ccr &= ~(15 << ((7 - crD) << 2));
+ *ccr |= (cmp << ((7 - crD) << 2));
+
+#ifdef DEBUG
+ printk("CR: %08x\n", *ccr);
+#endif
+
+ return ret;
+}
diff --git a/arch/powerpc/math-emu/efscmpgt.c b/arch/powerpc/math-emu/efscmpgt.c
new file mode 100644
index 0000000..95a16f5
--- /dev/null
+++ b/arch/powerpc/math-emu/efscmpgt.c
@@ -0,0 +1,45 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efscmpgt(u32 *ccr, int crD, void *rA, void *rB)
+{
+ FP_DECL_S(A);
+ FP_DECL_S(B);
+ long cmp;
+ int ret = 0;
+
+#ifdef DEBUG
+ printk("%s: %p (%08x) %d %p %p\n", __FUNCTION__, ccr, *ccr, crD, rA, rB);
+#endif
+
+ __FP_UNPACK_S(A, rA);
+ __FP_UNPACK_S(B, rB);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld)\n", A_s, A_f, A_e, A_c);
+ printk("B: %ld %lu %ld (%ld)\n", B_s, B_f, B_e, B_c);
+#endif
+
+ FP_CMP_S(cmp, A, B, 2);
+
+ if (cmp == 1) {
+ cmp = 0x4;
+ } else {
+ cmp = 0;
+ }
+
+ *ccr &= ~(15 << ((7 - crD) << 2));
+ *ccr |= (cmp << ((7 - crD) << 2));
+
+#ifdef DEBUG
+ printk("CR: %08x\n", *ccr);
+#endif
+
+ return ret;
+}
diff --git a/arch/powerpc/math-emu/efscmplt.c b/arch/powerpc/math-emu/efscmplt.c
new file mode 100644
index 0000000..dd1154a
--- /dev/null
+++ b/arch/powerpc/math-emu/efscmplt.c
@@ -0,0 +1,45 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efscmplt(u32 *ccr, int crD, void *rA, void *rB)
+{
+ FP_DECL_S(A);
+ FP_DECL_S(B);
+ long cmp;
+ int ret = 0;
+
+#ifdef DEBUG
+ printk("%s: %p (%08x) %d %p %p\n", __FUNCTION__, ccr, *ccr, crD, rA, rB);
+#endif
+
+ __FP_UNPACK_S(A, rA);
+ __FP_UNPACK_S(B, rB);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld)\n", A_s, A_f, A_e, A_c);
+ printk("B: %ld %lu %ld (%ld)\n", B_s, B_f, B_e, B_c);
+#endif
+
+ FP_CMP_S(cmp, A, B, 2);
+
+ if (cmp == -1) {
+ cmp = 0x4;
+ } else {
+ cmp = 0;
+ }
+
+ *ccr &= ~(15 << ((7 - crD) << 2));
+ *ccr |= (cmp << ((7 - crD) << 2));
+
+#ifdef DEBUG
+ printk("CR: %08x\n", *ccr);
+#endif
+
+ return ret;
+}
diff --git a/arch/powerpc/math-emu/efsctsf.c b/arch/powerpc/math-emu/efsctsf.c
new file mode 100644
index 0000000..dcbd7ab
--- /dev/null
+++ b/arch/powerpc/math-emu/efsctsf.c
@@ -0,0 +1,29 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsctsf(u32 *rD, u32 *rB)
+{
+ if (!((rB[0] >> 23) == 0xff && ((rB[0] & 0x7fffff) > 0))) {/* Not an NaN */
+ if (((rB[0] >> 23) & 0xff) == 0 ) { /* rB is Denorm */
+ rD[0] = 0x0;
+ } else if ((rB[0] >> 31) == 0) { /* rB is positive normal */
+ rD[0] = 0x7fffffff;
+ } else { /* rB is negative normal */
+ rD[0] = 0x80000000;
+ }
+ } else { /* rB is NaN */
+ rD[0] = 0x0;
+ }
+#ifdef DEBUG
+ printk("%s: D %p, B %p: ", __FUNCTION__, rD, rB);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsctsi.c b/arch/powerpc/math-emu/efsctsi.c
new file mode 100644
index 0000000..aa73b95
--- /dev/null
+++ b/arch/powerpc/math-emu/efsctsi.c
@@ -0,0 +1,26 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsctsi(u32 *rD, void *rB)
+{
+ FP_DECL_S(B);
+ unsigned int r;
+
+ __FP_UNPACK_S(B, rB);
+ _FP_ROUND(1, B);
+ FP_TO_INT_S(r, B, 32, 1);
+ rD[0] = r;
+
+#ifdef DEBUG
+ printk("%s: D %p, B %p: ", __FUNCTION__, rD, rB);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsctsiz.c b/arch/powerpc/math-emu/efsctsiz.c
new file mode 100644
index 0000000..a849bb4
--- /dev/null
+++ b/arch/powerpc/math-emu/efsctsiz.c
@@ -0,0 +1,26 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsctsiz(u32 *rD, void *rB)
+{
+ FP_DECL_S(B);
+ unsigned int r;
+
+ __FP_UNPACK_S(B, rB);
+ _FP_ROUND_ZERO(1, B);
+ FP_TO_INT_S(r, B, 32, 1);
+ rD[0] = r;
+
+#ifdef DEBUG
+ printk("%s: D %p, B %p: ", __FUNCTION__, rD, rB);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsctuf.c b/arch/powerpc/math-emu/efsctuf.c
new file mode 100644
index 0000000..e1bab26
--- /dev/null
+++ b/arch/powerpc/math-emu/efsctuf.c
@@ -0,0 +1,28 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsctuf(u32 *rD, u32 *rB)
+{
+ if (!((rB[0] >> 23) == 0xff && ((rB[0] & 0x7fffff) > 0 )) /* Not an NaN */
+ && (rB[0] >> 31) == 0) { /* rB is positive */
+ if (((rB[0] >> 23) & 0xff) == 0 ) { /* rB is Denorm */
+ rD[0] = 0x0;
+ } else { /* rB is normal */
+ rD[0] = 0xffffffff;
+ }
+ } else { /* rB < 0 or rB is NaN */
+ rD[0] = 0x0;
+ }
+#ifdef DEBUG
+ printk("%s: D %p, B %p: ", __FUNCTION__, rD, rB);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsctui.c b/arch/powerpc/math-emu/efsctui.c
new file mode 100644
index 0000000..b45e4a9
--- /dev/null
+++ b/arch/powerpc/math-emu/efsctui.c
@@ -0,0 +1,26 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsctui(u32 *rD, void *rB)
+{
+ FP_DECL_S(B);
+ unsigned int r;
+
+ __FP_UNPACK_S(B, rB);
+ _FP_ROUND(1, B);
+ FP_TO_INT_S(r, B, 32, 0);
+ rD[0] = r;
+
+#ifdef DEBUG
+ printk("%s: D %p, B %p: ", __FUNCTION__, rD, rB);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsctuiz.c b/arch/powerpc/math-emu/efsctuiz.c
new file mode 100644
index 0000000..1df9c2d
--- /dev/null
+++ b/arch/powerpc/math-emu/efsctuiz.c
@@ -0,0 +1,26 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsctuiz(u32 *rD, void *rB)
+{
+ FP_DECL_S(B);
+ unsigned int r;
+
+ __FP_UNPACK_S(B, rB);
+ _FP_ROUND_ZERO(1, B);
+ FP_TO_INT_S(r, B, 32, 0);
+ rD[0] = r;
+
+#ifdef DEBUG
+ printk("%s: D %p, B %p: ", __FUNCTION__, rD, rB);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsdiv.c b/arch/powerpc/math-emu/efsdiv.c
new file mode 100644
index 0000000..3d21522
--- /dev/null
+++ b/arch/powerpc/math-emu/efsdiv.c
@@ -0,0 +1,36 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efsdiv(void *rD, void *rA, void *rB)
+{
+ FP_DECL_S(A);
+ FP_DECL_S(B);
+ FP_DECL_S(R);
+ int ret = 0;
+
+#ifdef DEBUG
+ printk("%s: %p %p %p\n", __FUNCTION__, rD, rA, rB);
+#endif
+
+ __FP_UNPACK_S(A, rA);
+ __FP_UNPACK_S(B, rB);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld)\n", A_s, A_f, A_e, A_c);
+ printk("B: %ld %lu %ld (%ld)\n", B_s, B_f, B_e, B_c);
+#endif
+
+ FP_DIV_S(R, A, B);
+
+#ifdef DEBUG
+ printk("D: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
+#endif
+
+ return (ret | __FP_PACK_S(rD, R));
+}
diff --git a/arch/powerpc/math-emu/efsmul.c b/arch/powerpc/math-emu/efsmul.c
new file mode 100644
index 0000000..9101399
--- /dev/null
+++ b/arch/powerpc/math-emu/efsmul.c
@@ -0,0 +1,38 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+int
+efsmul(void *rD, void *rA, void *rB)
+{
+ FP_DECL_S(A);
+ FP_DECL_S(B);
+ FP_DECL_S(R);
+ int ret = 0;
+#ifdef DEBUG
+ printk("%s: %p %p %p\n", __FUNCTION__, rD, rA, rB);
+#endif
+
+ __FP_UNPACK_S(A, rA);
+ __FP_UNPACK_S(B, rB);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld) [%08lx %lx]\n",
+ A_s, A_f, A_e, A_c, A_f, A_e + 127);
+ printk("B: %ld %lu %ld (%ld) [%08lx %lx]\n",
+ B_s, B_f, B_e, B_c, B_f, B_e + 127);
+#endif
+
+ FP_MUL_S(R, A, B);
+
+#ifdef DEBUG
+ printk("D: %ld %lu %ld (%ld) [%08lx %lx]\n",
+ R_s, R_f, R_e, R_c, R_f, R_e + 127);
+#endif
+
+ return (ret | __FP_PACK_S(rD, R));
+}
+
diff --git a/arch/powerpc/math-emu/efsnabs.c b/arch/powerpc/math-emu/efsnabs.c
new file mode 100644
index 0000000..6db3d86
--- /dev/null
+++ b/arch/powerpc/math-emu/efsnabs.c
@@ -0,0 +1,16 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+int
+efsnabs(u32 *rD, u32 *rA)
+{
+ rD[0] = rA[0] | 0x80000000;
+
+#ifdef DEBUG
+ printk("%s: D %p, A %p: ", __FUNCTION__, rD, rA);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efsneg.c b/arch/powerpc/math-emu/efsneg.c
new file mode 100644
index 0000000..f4abc86
--- /dev/null
+++ b/arch/powerpc/math-emu/efsneg.c
@@ -0,0 +1,16 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+int
+efsneg(u32 *rD, u32 *rA)
+{
+ rD[0] = rA[0] ^ 0x80000000;
+
+#ifdef DEBUG
+ printk("%s: D %p, A %p: ", __FUNCTION__, rD, rA);
+ printk("\n");
+#endif
+
+ return 0;
+}
diff --git a/arch/powerpc/math-emu/efssub.c b/arch/powerpc/math-emu/efssub.c
new file mode 100644
index 0000000..55bec0a
--- /dev/null
+++ b/arch/powerpc/math-emu/efssub.c
@@ -0,0 +1,39 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "spe.h"
+#include "soft-fp.h"
+#include "single.h"
+
+int
+efssub(void *rD, void *rA, void *rB)
+{
+ FP_DECL_S(A);
+ FP_DECL_S(B);
+ FP_DECL_S(R);
+ int ret = 0;
+
+#ifdef DEBUG
+ printk("%s: %p %p %p\n", __FUNCTION__, rD, rA, rB);
+#endif
+
+ __FP_UNPACK_S(A, rA);
+ __FP_UNPACK_S(B, rB);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld)\n", A_s, A_f, A_e, A_c);
+ printk("B: %ld %lu %ld (%ld)\n", B_s, B_f, B_e, B_c);
+#endif
+
+ if (B_c != FP_CLS_NAN)
+ B_s ^= 1;
+
+ FP_ADD_S(R, A, B);
+
+#ifdef DEBUG
+ printk("D: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
+#endif
+
+ return (ret | __FP_PACK_S(rD, R));
+}
--
1.4.0
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