summaryrefslogtreecommitdiffstats
path: root/arch/arm26/nwfpe/fpa11_cpdt.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm26/nwfpe/fpa11_cpdt.c')
-rw-r--r--arch/arm26/nwfpe/fpa11_cpdt.c368
1 files changed, 0 insertions, 368 deletions
diff --git a/arch/arm26/nwfpe/fpa11_cpdt.c b/arch/arm26/nwfpe/fpa11_cpdt.c
deleted file mode 100644
index e12db7c51a7..00000000000
--- a/arch/arm26/nwfpe/fpa11_cpdt.c
+++ /dev/null
@@ -1,368 +0,0 @@
-/*
- NetWinder Floating Point Emulator
- (c) Rebel.com, 1998-1999
- (c) Philip Blundell, 1998
-
- Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "fpa11.h"
-#include "softfloat.h"
-#include "fpopcode.h"
-#include "fpmodule.h"
-#include "fpmodule.inl"
-
-#include <asm/uaccess.h>
-
-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();
- union
- {
- float32 f;
- unsigned int i[1];
- } val;
-
- switch (fpa11->fType[Fn])
- {
- case typeDouble:
- val.f = float64_to_float32(fpa11->fpreg[Fn].fDouble);
- break;
-
- case typeExtended:
- val.f = floatx80_to_float32(fpa11->fpreg[Fn].fExtended);
- break;
-
- default: val.f = fpa11->fpreg[Fn].fSingle;
- }
-
- put_user(val.i[0], pMem);
-}
-
-static inline
-void storeDouble(const unsigned int Fn,unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- union
- {
- float64 f;
- unsigned int i[2];
- } val;
-
- switch (fpa11->fType[Fn])
- {
- case typeSingle:
- val.f = float32_to_float64(fpa11->fpreg[Fn].fSingle);
- break;
-
- case typeExtended:
- val.f = floatx80_to_float64(fpa11->fpreg[Fn].fExtended);
- break;
-
- default: val.f = fpa11->fpreg[Fn].fDouble;
- }
-
- put_user(val.i[1], &pMem[0]); /* msw */
- put_user(val.i[0], &pMem[1]); /* lsw */
-}
-
-static inline
-void storeExtended(const unsigned int Fn,unsigned int *pMem)
-{
- FPA11 *fpa11 = GET_FPA11();
- union
- {
- floatx80 f;
- unsigned int i[3];
- } val;
-
- switch (fpa11->fType[Fn])
- {
- case typeSingle:
- val.f = float32_to_floatx80(fpa11->fpreg[Fn].fSingle);
- break;
-
- case typeDouble:
- val.f = float64_to_floatx80(fpa11->fpreg[Fn].fDouble);
- break;
-
- default: val.f = fpa11->fpreg[Fn].fExtended;
- }
-
- put_user(val.i[0], &pMem[0]); /* sign & exp */
- put_user(val.i[1], &pMem[2]);
- put_user(val.i[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;
- }
-}
-
-unsigned int PerformLDF(const unsigned int opcode)
-{
- unsigned int *pBase, *pAddress, *pFinal, nRc = 1,
- write_back = WRITE_BACK(opcode);
-
- //printk("PerformLDF(0x%08x), Fd = 0x%08x\n",opcode,getFd(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;
-}
-
-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 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;
- }
-
- 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;
- }
-
- if (write_back) writeRegister(getRn(opcode),(unsigned int)pFinal);
- return 1;
-}
-
-#if 1
-unsigned int EmulateCPDT(const unsigned int opcode)
-{
- 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;
-}
-#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 07:16:09 +0000