patch-2.4.22 linux-2.4.22/arch/arm/nwfpe/fpa11_cpdt.c
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- Lines: 659
- Date:
2003-08-25 04:44:39.000000000 -0700
- Orig file:
linux-2.4.21/arch/arm/nwfpe/fpa11_cpdt.c
- Orig date:
2002-08-02 17:39:42.000000000 -0700
diff -urN linux-2.4.21/arch/arm/nwfpe/fpa11_cpdt.c linux-2.4.22/arch/arm/nwfpe/fpa11_cpdt.c
@@ -1,7 +1,7 @@
/*
NetWinder Floating Point Emulator
(c) Rebel.com, 1998-1999
- (c) Philip Blundell, 1998
+ (c) Philip Blundell, 1998, 2001
Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
@@ -28,331 +28,347 @@
#include <asm/uaccess.h>
-static inline
-void loadSingle(const unsigned int Fn,const unsigned int *pMem)
+static inline void loadSingle(const unsigned int Fn, const unsigned int *pMem)
{
- FPA11 *fpa11 = GET_FPA11();
- fpa11->fType[Fn] = typeSingle;
- get_user(fpa11->fpreg[Fn].fSingle, pMem);
-}
-
-static inline
-void loadDouble(const unsigned int Fn,const unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- unsigned int *p;
- p = (unsigned int*)&fpa11->fpreg[Fn].fDouble;
- fpa11->fType[Fn] = typeDouble;
- get_user(p[0], &pMem[1]);
- get_user(p[1], &pMem[0]); /* sign & exponent */
-}
-
-static inline
-void loadExtended(const unsigned int Fn,const unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- unsigned int *p;
- p = (unsigned int*)&fpa11->fpreg[Fn].fExtended;
- fpa11->fType[Fn] = typeExtended;
- get_user(p[0], &pMem[0]); /* sign & exponent */
- get_user(p[1], &pMem[2]); /* ls bits */
- get_user(p[2], &pMem[1]); /* ms bits */
-}
-
-static inline
-void loadMultiple(const unsigned int Fn,const unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- register unsigned int *p;
- unsigned long x;
-
- p = (unsigned int*)&(fpa11->fpreg[Fn]);
- get_user(x, &pMem[0]);
- fpa11->fType[Fn] = (x >> 14) & 0x00000003;
-
- switch (fpa11->fType[Fn])
- {
- case typeSingle:
- case typeDouble:
- {
- get_user(p[0], &pMem[2]); /* Single */
- get_user(p[1], &pMem[1]); /* double msw */
- p[2] = 0; /* empty */
- }
- break;
-
- case typeExtended:
- {
- get_user(p[1], &pMem[2]);
- get_user(p[2], &pMem[1]); /* msw */
- p[0] = (x & 0x80003fff);
- }
- break;
- }
-}
-
-static inline
-void storeSingle(const unsigned int Fn,unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- float32 val;
- register unsigned int *p = (unsigned int*)&val;
-
- switch (fpa11->fType[Fn])
- {
- case typeDouble:
- val = float64_to_float32(fpa11->fpreg[Fn].fDouble);
- break;
-
- case typeExtended:
- val = floatx80_to_float32(fpa11->fpreg[Fn].fExtended);
- break;
-
- default: val = fpa11->fpreg[Fn].fSingle;
- }
-
- put_user(p[0], pMem);
-}
-
-static inline
-void storeDouble(const unsigned int Fn,unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- float64 val;
- register unsigned int *p = (unsigned int*)&val;
-
- switch (fpa11->fType[Fn])
- {
- case typeSingle:
- val = float32_to_float64(fpa11->fpreg[Fn].fSingle);
- break;
-
- case typeExtended:
- val = floatx80_to_float64(fpa11->fpreg[Fn].fExtended);
- break;
-
- default: val = fpa11->fpreg[Fn].fDouble;
- }
- put_user(p[1], &pMem[0]); /* msw */
- put_user(p[0], &pMem[1]); /* lsw */
-}
-
-static inline
-void storeExtended(const unsigned int Fn,unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- floatx80 val;
- register unsigned int *p = (unsigned int*)&val;
-
- switch (fpa11->fType[Fn])
- {
- case typeSingle:
- val = float32_to_floatx80(fpa11->fpreg[Fn].fSingle);
- break;
-
- case typeDouble:
- val = float64_to_floatx80(fpa11->fpreg[Fn].fDouble);
- break;
-
- default: val = fpa11->fpreg[Fn].fExtended;
- }
-
- put_user(p[0], &pMem[0]); /* sign & exp */
- put_user(p[1], &pMem[2]);
- put_user(p[2], &pMem[1]); /* msw */
-}
-
-static inline
-void storeMultiple(const unsigned int Fn,unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- register unsigned int nType, *p;
-
- p = (unsigned int*)&(fpa11->fpreg[Fn]);
- nType = fpa11->fType[Fn];
-
- switch (nType)
- {
- case typeSingle:
- case typeDouble:
- {
- put_user(p[0], &pMem[2]); /* single */
- put_user(p[1], &pMem[1]); /* double msw */
- put_user(nType << 14, &pMem[0]);
- }
- break;
-
- case typeExtended:
- {
- put_user(p[2], &pMem[1]); /* msw */
- put_user(p[1], &pMem[2]);
- put_user((p[0] & 0x80003fff) | (nType << 14), &pMem[0]);
- }
- break;
- }
+ FPA11 *fpa11 = GET_FPA11();
+ fpa11->fType[Fn] = typeSingle;
+ get_user(fpa11->fpreg[Fn].fSingle, pMem);
}
-unsigned int PerformLDF(const unsigned int opcode)
+static inline void loadDouble(const unsigned int Fn, const unsigned int *pMem)
+{
+ FPA11 *fpa11 = GET_FPA11();
+ unsigned int *p;
+ p = (unsigned int *) &fpa11->fpreg[Fn].fDouble;
+ fpa11->fType[Fn] = typeDouble;
+ get_user(p[0], &pMem[1]);
+ get_user(p[1], &pMem[0]); /* sign & exponent */
+}
+
+#ifdef CONFIG_FPE_NWFPE_XP
+static inline void loadExtended(const unsigned int Fn, const unsigned int *pMem)
+{
+ FPA11 *fpa11 = GET_FPA11();
+ unsigned int *p;
+ p = (unsigned int *) &fpa11->fpreg[Fn].fExtended;
+ fpa11->fType[Fn] = typeExtended;
+ get_user(p[0], &pMem[0]); /* sign & exponent */
+ get_user(p[1], &pMem[2]); /* ls bits */
+ get_user(p[2], &pMem[1]); /* ms bits */
+}
+#endif
+
+static inline void loadMultiple(const unsigned int Fn, const unsigned int *pMem)
+{
+ FPA11 *fpa11 = GET_FPA11();
+ register unsigned int *p;
+ unsigned long x;
+
+ p = (unsigned int *) &(fpa11->fpreg[Fn]);
+ get_user(x, &pMem[0]);
+ fpa11->fType[Fn] = (x >> 14) & 0x00000003;
+
+ switch (fpa11->fType[Fn]) {
+ case typeSingle:
+ case typeDouble:
+ {
+ get_user(p[0], &pMem[2]); /* Single */
+ get_user(p[1], &pMem[1]); /* double msw */
+ p[2] = 0; /* empty */
+ }
+ break;
+
+#ifdef CONFIG_FPE_NWFPE_XP
+ case typeExtended:
+ {
+ get_user(p[1], &pMem[2]);
+ get_user(p[2], &pMem[1]); /* msw */
+ p[0] = (x & 0x80003fff);
+ }
+ break;
+#endif
+ }
+}
+
+static inline void storeSingle(const unsigned int Fn, unsigned int *pMem)
+{
+ FPA11 *fpa11 = GET_FPA11();
+ float32 val;
+ register unsigned int *p = (unsigned int *) &val;
+
+ switch (fpa11->fType[Fn]) {
+ case typeDouble:
+ val = float64_to_float32(fpa11->fpreg[Fn].fDouble);
+ break;
+
+#ifdef CONFIG_FPE_NWFPE_XP
+ case typeExtended:
+ val = floatx80_to_float32(fpa11->fpreg[Fn].fExtended);
+ break;
+#endif
+
+ default:
+ val = fpa11->fpreg[Fn].fSingle;
+ }
+
+ put_user(p[0], pMem);
+}
+
+static inline void storeDouble(const unsigned int Fn, unsigned int *pMem)
+{
+ FPA11 *fpa11 = GET_FPA11();
+ float64 val;
+ register unsigned int *p = (unsigned int *) &val;
+
+ switch (fpa11->fType[Fn]) {
+ case typeSingle:
+ val = float32_to_float64(fpa11->fpreg[Fn].fSingle);
+ break;
+
+#ifdef CONFIG_FPE_NWFPE_XP
+ case typeExtended:
+ val = floatx80_to_float64(fpa11->fpreg[Fn].fExtended);
+ break;
+#endif
+
+ default:
+ val = fpa11->fpreg[Fn].fDouble;
+ }
+ put_user(p[1], &pMem[0]); /* msw */
+ put_user(p[0], &pMem[1]); /* lsw */
+}
+
+#ifdef CONFIG_FPE_NWFPE_XP
+static inline void storeExtended(const unsigned int Fn, unsigned int *pMem)
+{
+ FPA11 *fpa11 = GET_FPA11();
+ floatx80 val;
+ register unsigned int *p = (unsigned int *) &val;
+
+ switch (fpa11->fType[Fn]) {
+ case typeSingle:
+ val = float32_to_floatx80(fpa11->fpreg[Fn].fSingle);
+ break;
+
+ case typeDouble:
+ val = float64_to_floatx80(fpa11->fpreg[Fn].fDouble);
+ break;
+
+ default:
+ val = fpa11->fpreg[Fn].fExtended;
+ }
+
+ put_user(p[0], &pMem[0]); /* sign & exp */
+ put_user(p[1], &pMem[2]);
+ put_user(p[2], &pMem[1]); /* msw */
+}
+#endif
+
+static inline void storeMultiple(const unsigned int Fn, unsigned int *pMem)
{
- unsigned int *pBase, *pAddress, *pFinal, nRc = 1,
- write_back = WRITE_BACK(opcode);
+ FPA11 *fpa11 = GET_FPA11();
+ register unsigned int nType, *p;
+
+ p = (unsigned int *) &(fpa11->fpreg[Fn]);
+ nType = fpa11->fType[Fn];
+
+ switch (nType) {
+ case typeSingle:
+ case typeDouble:
+ {
+ put_user(p[0], &pMem[2]); /* single */
+ put_user(p[1], &pMem[1]); /* double msw */
+ put_user(nType << 14, &pMem[0]);
+ }
+ break;
+
+#ifdef CONFIG_FPE_NWFPE_XP
+ case typeExtended:
+ {
+ put_user(p[2], &pMem[1]); /* msw */
+ put_user(p[1], &pMem[2]);
+ put_user((p[0] & 0x80003fff) | (nType << 14), &pMem[0]);
+ }
+ break;
+#endif
+ }
+}
- //printk("PerformLDF(0x%08x), Fd = 0x%08x\n",opcode,getFd(opcode));
+unsigned int PerformLDF(const unsigned int opcode)
+{
+ unsigned int *pBase, *pAddress, *pFinal, nRc = 1,
+ write_back = WRITE_BACK(opcode);
- pBase = (unsigned int*)readRegister(getRn(opcode));
- if (REG_PC == getRn(opcode))
- {
- pBase += 2;
- write_back = 0;
- }
-
- pFinal = pBase;
- if (BIT_UP_SET(opcode))
- pFinal += getOffset(opcode);
- else
- pFinal -= getOffset(opcode);
-
- if (PREINDEXED(opcode)) pAddress = pFinal; else pAddress = pBase;
-
- switch (opcode & MASK_TRANSFER_LENGTH)
- {
- case TRANSFER_SINGLE : loadSingle(getFd(opcode),pAddress); break;
- case TRANSFER_DOUBLE : loadDouble(getFd(opcode),pAddress); break;
- case TRANSFER_EXTENDED: loadExtended(getFd(opcode),pAddress); break;
- default: nRc = 0;
- }
-
- if (write_back) writeRegister(getRn(opcode),(unsigned int)pFinal);
- return nRc;
+ pBase = (unsigned int *) readRegister(getRn(opcode));
+ if (REG_PC == getRn(opcode)) {
+ pBase += 2;
+ write_back = 0;
+ }
+
+ pFinal = pBase;
+ if (BIT_UP_SET(opcode))
+ pFinal += getOffset(opcode);
+ else
+ pFinal -= getOffset(opcode);
+
+ if (PREINDEXED(opcode))
+ pAddress = pFinal;
+ else
+ pAddress = pBase;
+
+ switch (opcode & MASK_TRANSFER_LENGTH) {
+ case TRANSFER_SINGLE:
+ loadSingle(getFd(opcode), pAddress);
+ break;
+ case TRANSFER_DOUBLE:
+ loadDouble(getFd(opcode), pAddress);
+ break;
+#ifdef CONFIG_FPE_NWFPE_XP
+ case TRANSFER_EXTENDED:
+ loadExtended(getFd(opcode), pAddress);
+ break;
+#endif
+ default:
+ nRc = 0;
+ }
+
+ if (write_back)
+ writeRegister(getRn(opcode), (unsigned int) pFinal);
+ return nRc;
}
unsigned int PerformSTF(const unsigned int opcode)
{
- unsigned int *pBase, *pAddress, *pFinal, nRc = 1,
- write_back = WRITE_BACK(opcode);
-
- //printk("PerformSTF(0x%08x), Fd = 0x%08x\n",opcode,getFd(opcode));
- SetRoundingMode(ROUND_TO_NEAREST);
-
- pBase = (unsigned int*)readRegister(getRn(opcode));
- if (REG_PC == getRn(opcode))
- {
- pBase += 2;
- write_back = 0;
- }
-
- pFinal = pBase;
- if (BIT_UP_SET(opcode))
- pFinal += getOffset(opcode);
- else
- pFinal -= getOffset(opcode);
-
- if (PREINDEXED(opcode)) pAddress = pFinal; else pAddress = pBase;
-
- switch (opcode & MASK_TRANSFER_LENGTH)
- {
- case TRANSFER_SINGLE : storeSingle(getFd(opcode),pAddress); break;
- case TRANSFER_DOUBLE : storeDouble(getFd(opcode),pAddress); break;
- case TRANSFER_EXTENDED: storeExtended(getFd(opcode),pAddress); break;
- default: nRc = 0;
- }
-
- if (write_back) writeRegister(getRn(opcode),(unsigned int)pFinal);
- return nRc;
+ unsigned int *pBase, *pAddress, *pFinal, nRc = 1,
+ write_back = WRITE_BACK(opcode);
+
+ SetRoundingMode(ROUND_TO_NEAREST);
+
+ pBase = (unsigned int *) readRegister(getRn(opcode));
+ if (REG_PC == getRn(opcode)) {
+ pBase += 2;
+ write_back = 0;
+ }
+
+ pFinal = pBase;
+ if (BIT_UP_SET(opcode))
+ pFinal += getOffset(opcode);
+ else
+ pFinal -= getOffset(opcode);
+
+ if (PREINDEXED(opcode))
+ pAddress = pFinal;
+ else
+ pAddress = pBase;
+
+ switch (opcode & MASK_TRANSFER_LENGTH) {
+ case TRANSFER_SINGLE:
+ storeSingle(getFd(opcode), pAddress);
+ break;
+ case TRANSFER_DOUBLE:
+ storeDouble(getFd(opcode), pAddress);
+ break;
+#ifdef CONFIG_FPE_NWFPE_XP
+ case TRANSFER_EXTENDED:
+ storeExtended(getFd(opcode), pAddress);
+ break;
+#endif
+ default:
+ nRc = 0;
+ }
+
+ if (write_back)
+ writeRegister(getRn(opcode), (unsigned int) pFinal);
+ return nRc;
}
unsigned int PerformLFM(const unsigned int opcode)
{
- unsigned int i, Fd, *pBase, *pAddress, *pFinal,
- write_back = WRITE_BACK(opcode);
-
- pBase = (unsigned int*)readRegister(getRn(opcode));
- if (REG_PC == getRn(opcode))
- {
- pBase += 2;
- write_back = 0;
- }
-
- pFinal = pBase;
- if (BIT_UP_SET(opcode))
- pFinal += getOffset(opcode);
- else
- pFinal -= getOffset(opcode);
-
- if (PREINDEXED(opcode)) pAddress = pFinal; else pAddress = pBase;
-
- Fd = getFd(opcode);
- for (i=getRegisterCount(opcode);i>0;i--)
- {
- loadMultiple(Fd,pAddress);
- pAddress += 3; Fd++;
- if (Fd == 8) Fd = 0;
- }
+ unsigned int i, Fd, *pBase, *pAddress, *pFinal,
+ write_back = WRITE_BACK(opcode);
- if (write_back) writeRegister(getRn(opcode),(unsigned int)pFinal);
- return 1;
+ pBase = (unsigned int *) readRegister(getRn(opcode));
+ if (REG_PC == getRn(opcode)) {
+ pBase += 2;
+ write_back = 0;
+ }
+
+ pFinal = pBase;
+ if (BIT_UP_SET(opcode))
+ pFinal += getOffset(opcode);
+ else
+ pFinal -= getOffset(opcode);
+
+ if (PREINDEXED(opcode))
+ pAddress = pFinal;
+ else
+ pAddress = pBase;
+
+ Fd = getFd(opcode);
+ for (i = getRegisterCount(opcode); i > 0; i--) {
+ loadMultiple(Fd, pAddress);
+ pAddress += 3;
+ Fd++;
+ if (Fd == 8)
+ Fd = 0;
+ }
+
+ if (write_back)
+ writeRegister(getRn(opcode), (unsigned int) pFinal);
+ return 1;
}
unsigned int PerformSFM(const unsigned int opcode)
{
- unsigned int i, Fd, *pBase, *pAddress, *pFinal,
- write_back = WRITE_BACK(opcode);
-
- pBase = (unsigned int*)readRegister(getRn(opcode));
- if (REG_PC == getRn(opcode))
- {
- pBase += 2;
- write_back = 0;
- }
-
- pFinal = pBase;
- if (BIT_UP_SET(opcode))
- pFinal += getOffset(opcode);
- else
- pFinal -= getOffset(opcode);
-
- if (PREINDEXED(opcode)) pAddress = pFinal; else pAddress = pBase;
-
- Fd = getFd(opcode);
- for (i=getRegisterCount(opcode);i>0;i--)
- {
- storeMultiple(Fd,pAddress);
- pAddress += 3; Fd++;
- if (Fd == 8) Fd = 0;
- }
+ unsigned int i, Fd, *pBase, *pAddress, *pFinal,
+ write_back = WRITE_BACK(opcode);
- if (write_back) writeRegister(getRn(opcode),(unsigned int)pFinal);
- return 1;
+ pBase = (unsigned int *) readRegister(getRn(opcode));
+ if (REG_PC == getRn(opcode)) {
+ pBase += 2;
+ write_back = 0;
+ }
+
+ pFinal = pBase;
+ if (BIT_UP_SET(opcode))
+ pFinal += getOffset(opcode);
+ else
+ pFinal -= getOffset(opcode);
+
+ if (PREINDEXED(opcode))
+ pAddress = pFinal;
+ else
+ pAddress = pBase;
+
+ Fd = getFd(opcode);
+ for (i = getRegisterCount(opcode); i > 0; i--) {
+ storeMultiple(Fd, pAddress);
+ pAddress += 3;
+ Fd++;
+ if (Fd == 8)
+ Fd = 0;
+ }
+
+ if (write_back)
+ writeRegister(getRn(opcode), (unsigned int) pFinal);
+ return 1;
}
-#if 1
unsigned int EmulateCPDT(const unsigned int opcode)
{
- unsigned int nRc = 0;
+ unsigned int nRc = 0;
- //printk("EmulateCPDT(0x%08x)\n",opcode);
-
- if (LDF_OP(opcode))
- {
- nRc = PerformLDF(opcode);
- }
- else if (LFM_OP(opcode))
- {
- nRc = PerformLFM(opcode);
- }
- else if (STF_OP(opcode))
- {
- nRc = PerformSTF(opcode);
- }
- else if (SFM_OP(opcode))
- {
- nRc = PerformSFM(opcode);
- }
- else
- {
- nRc = 0;
- }
-
- return nRc;
+ if (LDF_OP(opcode)) {
+ nRc = PerformLDF(opcode);
+ } else if (LFM_OP(opcode)) {
+ nRc = PerformLFM(opcode);
+ } else if (STF_OP(opcode)) {
+ nRc = PerformSTF(opcode);
+ } else if (SFM_OP(opcode)) {
+ nRc = PerformSFM(opcode);
+ } else {
+ nRc = 0;
+ }
+
+ return nRc;
}
-#endif
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