diff options
Diffstat (limited to 'misc/pascal/insn32/regm/regm_registers2.c')
| -rw-r--r-- | misc/pascal/insn32/regm/regm_registers2.c | 1083 |
1 files changed, 542 insertions, 541 deletions
diff --git a/misc/pascal/insn32/regm/regm_registers2.c b/misc/pascal/insn32/regm/regm_registers2.c index 2973dc7c3..25aaddfaf 100644 --- a/misc/pascal/insn32/regm/regm_registers2.c +++ b/misc/pascal/insn32/regm/regm_registers2.c @@ -1,541 +1,542 @@ -/**********************************************************************
- * regm_registers.c
- * Pass 2 register management functions
- *
- * Copyright (C) 2008 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- **********************************************************************/
-
-/**********************************************************************
- * Included Files
- **********************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "keywords.h"
-#include "pofflib.h"
-#include "pedefs.h"
-#include "perr.h"
-
-#include "rinsn32.h"
-
-#include "regm.h"
-#include "regm_pass2.h"
-#include "regm_registers2.h"
-
-/**********************************************************************
- * Definitions
- **********************************************************************/
-
-#define INITIAL_RCODE2_ALLOC 150
-#define RCODE2_REALLOC 50
-
-/**********************************************************************
- * Private Function Prototypes
- **********************************************************************/
-
-/**********************************************************************
- * Public Variables
- **********************************************************************/
-
-struct regm_rcode2_s *g_pRCode2 = NULL;
-uint32 g_nRCode2 = 0;
-
-/**********************************************************************
- * Private Variables
- **********************************************************************/
-
-static uint32 g_nRCode2Alloc = 0;
-
-static const char * const g_prgReg2Names[NREGISTER_TYPES] =
- { "Z", "X", "CC", "A", "R", "V", "V", "S" };
-
-static const char * const g_prgSpecialReg2Names[NSPECIAL_REGISTERS2] =
- { "SPB", "SP", "BRG", "LSP", "CSB", "CSP", "PC", "DC", "LR", "CC"};
-
-/**********************************************************************
- * Private Functions
- **********************************************************************/
-
-/***********************************************************************/
-
-static void regm_CheckRCode2Alloc(void)
-{
- /* If the RCode buffer has never been allocated, allocate it now. */
-
- if (!g_pRCode2)
- {
- /* Allocate an inital buffer to hold the instructions */
-
- g_pRCode2 = (struct regm_rcode2_s*)
- malloc(INITIAL_RCODE2_ALLOC*sizeof(struct regm_rcode2_s));
- if (!g_pRCode2)
- {
- fatal(eNOMEMORY);
- }
-
- g_nRCode2Alloc = INITIAL_RCODE2_ALLOC;
- }
-
- /* The buffer has already been allocated, is there space for one
- * more RCode?
- */
-
- else if (g_nRCode2 >= g_nRCode2Alloc)
- {
- /* If not, then reallocate the array */
-
- g_pRCode2 = (struct regm_rcode2_s*)
- realloc(g_pRCode2, g_nRCode2Alloc*sizeof(struct regm_rcode2_s));
- if (!g_pRCode2)
- {
- fatal(eNOMEMORY);
- }
-
- g_nRCode2Alloc += RCODE2_REALLOC;
- }
-}
-
-/***********************************************************************/
-
-struct regm_rcode2_s *regm_AllocateRCode2(void)
-{
- struct regm_rcode2_s *pRetSlot;
-
- /* Make sure we have memory allocated in the array for another
- * RCode.
- */
-
- regm_CheckRCode2Alloc();
-
- /* Return the reference to the next RCode slot */
-
- pRetSlot = &g_pRCode2[g_nRCode2];
- g_nRCode2++;
- return pRetSlot;
-}
-
-static void regm_PrintSpecialReg2(FILE *pStream, uint32 dwRegister)
-{
- int wRegNo = regm_GetRegNo(dwRegister);
- if (wRegNo >= NSPECIAL_REGISTERS2)
- fputc('?', pStream);
- else
- fputs(g_prgSpecialRegNames[wRegNo], pStream);
-}
-
-static void regm_PrintReg2(FILE *pStream, uint32 dwRegister)
-{
- int wKind = regm_GetKind(dwRegister);
- int wRegNo = regm_GetRegNo(dwRegister)
- if (wKind >= REGISTERS_TYPES)
- fprintf(pStream, "?%d", wRegNo);
- else if (wKind == SPECIAL_REG)
- regm_PrintSpecialReg(fg, dwRegister);
- else
- fprintf(pStream, "%s%d", g_prgRegNames[wKind], wRegNo);
-}
-
-static void regm_PrintDebugReg(const char *string, uint32 dwRegister)
-{
- if (vRegmDebug)
- {
- fputs(string, DEBUG_FILE);
- regm_PrintReg2(DEBUG_FILE, dwRegister);
- fputc('\n', DEBUG_FILE);
- }
-}
-
-/***********************************************************************/
-
-static void regm_MarkRegisterUsed(struct regm_rcode2_s *pReg,
- uint32 dwRegister)
-{
- regm_PrintDebugReg("Register used: ", dwRegister);
-
- switch (regm_GetKind(dwRegister))
- {
- case SPECIAL_REG : /* Special "global" registers */
- break; /* (ignored) */
-
- case CC_REG : /* Condition code register instance (fake) */
- break;
-
- case INARG_REG : /* Volatile register for input arguments */
- /* and output values from/to callee */
- break;
-
- case OUTARG_REG : /* Volatile register for output arguments */
- /* and input values to/from called */
- /* function (fake) */
- break;
-
- case SCRATCH_REG : /* Volatile register for general usage */
- break;
-
- case VOLATILE_REG : /* Volatile registers in general */
- case STATIC_REG : /* Static register */
- default:
- fatal(ePOFFCONFUSION);
- break;
- }
-#warning "Not Implemeted"
-}
-
-/***********************************************************************/
-
-static void regm_MarkRegisterModified(struct regm_rcode2_s *pReg,
- uint32 dwRegister)
-{
- regm_PrintDebugReg("Register modified: ", dwRegister);
-
- switch (regm_GetKind(dwRegister))
- {
- case SPECIAL_REG : /* Special "global" registers */
- break; /* (ignored) */
-
- case CC_REG : /* Condition code register instance (fake) */
- break;
-
- case INARG_REG : /* Volatile register for input arguments */
- /* and output values from/to callee */
- break;
-
- case OUTARG_REG : /* Volatile register for output arguments */
- /* and input values to/from called */
- /* function (fake) */
- break;
-
- case SCRATCH_REG : /* Volatile register for general usage */
- break;
-
- case VOLATILE_REG : /* Volatile registers in general */
- case STATIC_REG : /* Static register */
- default:
- fatal(ePOFFCONFUSION);
- break;
- }
-#warning "Not Implemeted"
-}
-
-/**********************************************************************
- * Public Functions
- **********************************************************************/
-
-/***********************************************************************/
-/* Generate function prologue: Save return address, create stack frame
- * for local variables, and save static registers that till be used.
- */
-
-void regm_GeneratePrologue(uint32 dwFrameSize)
-{
-#warning "Not implemented"
-}
-
-/***********************************************************************/
-/* Restore static registers, release stack frame and return */
-
-void regm_GenerateEpilogue(uint32 dwFrameSize)
-{
-#warning "Not implemented"
-}
-
-/***********************************************************************/
-/* Register-to-register comparisons (e.g., cmp r1, r2)
- *
- * FORM 1R: <op> <roperand1>, <roperand2>
- */
-
-void regm_GenerateForm1RCc(ubyte chOp, uint32 dwROperand1,
- uint32 dwROperand2, uint32 dwRCc)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_1RCc;
- pReg->chOp = chOp;
- pReg->u.f1rcc.dwROperand1 = dwROperand1;
- pReg->u.f1rcc.dwROperand2 = dwROperand2;
- pReg->u.f1rcc.dwRCc = dwRCc;
-
- regm_MarkRegisterUsed(pReg, dwROperand1);
- regm_MarkRegisterUsed(pReg, dwROperand2);
- regm_MarkRegisterModified(pReg, dwRCc);
-}
-
-/***********************************************************************/
-/* Register-to-immediate comparisons (e.g., cmpi r1, 1)
- *
- * FORM 1I: <op> <roperand1>, <immediate>
- */
-
-void regm_GenerateForm1ICc(ubyte chOp, uint32 dwROperand1,
- uint32 dwImmediate, uint32 dwRCc)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_1ICc;
- pReg->chOp = chOp;
- pReg->u.f1icc.dwROperand1 = dwROperand1;
- pReg->u.f1icc.dwImmediate = dwImmediate;
- pReg->u.f1icc.dwRCc = dwRCc;
-
- regm_MarkRegisterUsed(pReg, dwROperand1);
- regm_MarkRegisterModified(pReg, dwRCc);
-}
-
-/***********************************************************************/
-/* Register-to-register mov instructions (e.g, mov r1, r2)
- *
- * FORM 2R: <op> <rdest>, <roperand2>
- */
-
-void regm_GenerateForm2R(ubyte chOp, uint32 dwRDest,
- uint32 dwROperand2)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_2R;
- pReg->chOp = chOp;
- pReg->u.f2r.dwRDest = dwRDest;
- pReg->u.f2r.dwROperand2 = dwROperand2;
-
- regm_MarkRegisterModified(pReg, dwRDest);
- regm_MarkRegisterUsed(pReg, dwROperand2);
-}
-
-/***********************************************************************/
-/* Immediate-to-register mov instructions (e.g, movi r1, 1)
- *
-/* FORM 2I: <op> <rdest>, <immediate>
-*/
-
-void regm_GenerateForm2I(ubyte chOp, uint32 dwRDest,
- uint32 dwImmediate)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_2I;
- pReg->chOp = chOp;
- pReg->u.f2i.dwRDest = dwRDest;
- pReg->u.f2i.dwImmediate = dwImmediate;
-
- regm_MarkRegisterModified(pReg, dwRDest);
-}
-
-/***********************************************************************/
-/* Binary operations (e.g., add r0, r1, r2)
- * Load operations (e.g., ld r0, [r1, r2])
- * Store operations (e.g., st r0, [r1, r2])
- *
- * FORM 3R: <op> <rdest>, <roperand1>, <roperand2>
- * <rsrc>, <roperand1>, <roperand2>
- */
-
-void regm_GenerateForm3R(ubyte chOp, uint32 dwRSrcDest,
- uint32 dwROperand1, uint32 dwROperand2)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_3R;
- pReg->chOp = chOp;
- pReg->u.f3r.dwRSrcDest = dwRSrcDest;
- pReg->u.f3r.dwROperand1 = dwROperand1;
- pReg->u.f3r.dwROperand2 = dwROperand2;
-
- switch (chOp)
- {
- /* FORM 3: Arithmetic and logical operations */
- /* FORM 3: Loads */
-
- case rADD :
- case rSUB :
- case rRSB :
- case rMUL :
- case rDIV :
- case rMOD :
- case rSLL :
- case rSRL :
- case rSRA :
- case rOR :
- case rAND :
- case rXOR :
- case rANDN :
- case rLD :
- case rLDH :
- case rLDB :
- regm_MarkRegisterModified(pReg, dwRSrcDest);
- break;
-
- /* FORM 3: Loads multiple */
- case rLDM :
- {
- uint32 dwRDest = dwRSrcDest;
- int i;
- for (i = 0; i < g_dwRegisterCount; i++)
- {
- regm_MarkRegisterModified(pReg, dwRDest);
- dwRDest++;
- }
- }
- break;
-
- /* FORM 3: Stores */
- case rST :
- case rSTH :
- case rSTB :
- regm_MarkRegisterUsed(pReg, dwRSrcDest);
- break;
-
- /* FORM 3: Store multipole */
- case rSTM :
- {
- uint32 dwRSrc = dwRSrcDest;
- int i;
- for (i = 0; i < g_dwRegisterCount; i++)
- {
- regm_MarkRegisterUsed(pReg, dwRSrc);
- dwRSrc++;
- }
- }
- break;
-
- default:
- fatal(ePOFFCONFUSION);
- }
-
- regm_MarkRegisterUsed(pReg, dwROperand1);
- regm_MarkRegisterUsed(pReg, dwROperand2);
-}
-
-/***********************************************************************/
-/* Binary operations (e.g., addi r0, r1, 1)
- * Load operations (e.g., ldi r0, [r1, 4])
- * Store operations (e.g., sti r0, [r1, 4])
- *
- * FORM 3I: <op> <rdest>, <roperand1>, <immediate>
- * <rsrc>, <roperand1>, <immediate>
- */
-
-void regm_GenerateForm3I(ubyte chOp, uint32 dwRSrcDest,
- uint32 dwROperand1, uint32 dwImmediate)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_3I;
- pReg->chOp = chOp;
- pReg->u.f3i.dwRSrcDest = dwRSrcDest;
- pReg->u.f3i.dwROperand1 = dwROperand1;
- pReg->u.f3i.dwImmediate = dwImmediate;
-
- switch (chOp)
- {
- /* FORM 3: Arithmetic and logical operations */
- /* FORM 3: Loads */
-
- case rADDI :
- case rSUBI :
- case rRSBI :
- case rMULI :
- case rDIVI :
- case rMODI :
- case rSLLI :
- case rSRLI :
- case rSRAI :
- case rORI :
- case rANDI :
- case rXORI :
- case rANDNI :
- case rLDI :
- case rLDIH :
- case rLDIB :
- regm_MarkRegisterModified(pReg, dwRSrcDest);
- break;
-
- /* FORM 3: Stores */
- case rSTI :
- case rSTIH :
- case rSTIB :
- regm_MarkRegisterUsed(pReg, dwRSrcDest);
- break;
-
- default:
- fatal(ePOFFCONFUSION);
- }
-
- regm_MarkRegisterUsed(pReg, dwROperand1);
-}
-
-/***********************************************************************/
-/* Unconditional branch operations (b offset, bl offset)
- *
- * FORM 4I: <op> <pc-offset>
- */
-
-void regm_GenerateForm4I(ubyte chOp, uint32 dwOffset)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_4I;
- pReg->chOp = chOp;
- pReg->u.f4i.dwOffset = dwOffset;
-}
-
-/***********************************************************************/
-/* Conditional branch operations (e.g., beq offset)
- *
- * FORM 4I: <op> <pc-offset>
- */
-
-void regm_GenerateForm4ICc(ubyte chOp, uint32 dwOffset,
- uint32 dwRCc)
-{
- struct regm_rcode2_s *pReg = regm_AllocateRCode2();
- pReg->eForm = eFORM_4ICc;
- pReg->chOp = chOp;
- pReg->u.f4icc.dwOffset = dwOffset;
- pReg->u.f4icc.dwRCc = dwRCc;
-
- regm_MarkRegisterUsed(pReg, dwRCc);
-}
-
-/***********************************************************************/
-
-int regm_ForEachRCode2(regm_rcode2_node_t pNode, void *arg)
-{
- int ret;
- int i;
- for (i = 0; i < g_nRCode2; i++)
- {
- ret = pNode(&g_pRCode2[i], arg);
- if (ret != 0)
- {
- return ret;
- }
- }
- return 0;
-}
-
-/***********************************************************************/
+/********************************************************************** + * regm_registers.c + * Pass 2 register management functions + * + * Copyright (C) 2008-2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + **********************************************************************/ + +/********************************************************************** + * Included Files + **********************************************************************/ + +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include "keywords.h" +#include "pofflib.h" +#include "pedefs.h" +#include "perr.h" + +#include "rinsn32.h" + +#include "regm.h" +#include "regm_pass2.h" +#include "regm_registers2.h" + +/********************************************************************** + * Definitions + **********************************************************************/ + +#define INITIAL_RCODE2_ALLOC 150 +#define RCODE2_REALLOC 50 + +/********************************************************************** + * Private Function Prototypes + **********************************************************************/ + +/********************************************************************** + * Public Variables + **********************************************************************/ + +struct regm_rcode2_s *g_pRCode2 = NULL; +uint32_t g_nRCode2 = 0; + +/********************************************************************** + * Private Variables + **********************************************************************/ + +static uint32_t g_nRCode2Alloc = 0; + +static const char * const g_prgReg2Names[NREGISTER_TYPES] = + { "Z", "X", "CC", "A", "R", "V", "V", "S" }; + +static const char * const g_prgSpecialReg2Names[NSPECIAL_REGISTERS2] = + { "SPB", "SP", "BRG", "LSP", "CSB", "CSP", "PC", "DC", "LR", "CC"}; + +/********************************************************************** + * Private Functions + **********************************************************************/ + +/***********************************************************************/ + +static void regm_CheckRCode2Alloc(void) +{ + /* If the RCode buffer has never been allocated, allocate it now. */ + + if (!g_pRCode2) + { + /* Allocate an inital buffer to hold the instructions */ + + g_pRCode2 = (struct regm_rcode2_s*) + malloc(INITIAL_RCODE2_ALLOC*sizeof(struct regm_rcode2_s)); + if (!g_pRCode2) + { + fatal(eNOMEMORY); + } + + g_nRCode2Alloc = INITIAL_RCODE2_ALLOC; + } + + /* The buffer has already been allocated, is there space for one + * more RCode? + */ + + else if (g_nRCode2 >= g_nRCode2Alloc) + { + /* If not, then reallocate the array */ + + g_pRCode2 = (struct regm_rcode2_s*) + realloc(g_pRCode2, g_nRCode2Alloc*sizeof(struct regm_rcode2_s)); + if (!g_pRCode2) + { + fatal(eNOMEMORY); + } + + g_nRCode2Alloc += RCODE2_REALLOC; + } +} + +/***********************************************************************/ + +struct regm_rcode2_s *regm_AllocateRCode2(void) +{ + struct regm_rcode2_s *pRetSlot; + + /* Make sure we have memory allocated in the array for another + * RCode. + */ + + regm_CheckRCode2Alloc(); + + /* Return the reference to the next RCode slot */ + + pRetSlot = &g_pRCode2[g_nRCode2]; + g_nRCode2++; + return pRetSlot; +} + +static void regm_PrintSpecialReg2(FILE *pStream, uint32_t dwRegister) +{ + int wRegNo = regm_GetRegNo(dwRegister); + if (wRegNo >= NSPECIAL_REGISTERS2) + fputc('?', pStream); + else + fputs(g_prgSpecialRegNames[wRegNo], pStream); +} + +static void regm_PrintReg2(FILE *pStream, uint32_t dwRegister) +{ + int wKind = regm_GetKind(dwRegister); + int wRegNo = regm_GetRegNo(dwRegister) + if (wKind >= REGISTERS_TYPES) + fprintf(pStream, "?%d", wRegNo); + else if (wKind == SPECIAL_REG) + regm_PrintSpecialReg(fg, dwRegister); + else + fprintf(pStream, "%s%d", g_prgRegNames[wKind], wRegNo); +} + +static void regm_PrintDebugReg(const char *string, uint32_t dwRegister) +{ + if (vRegmDebug) + { + fputs(string, DEBUG_FILE); + regm_PrintReg2(DEBUG_FILE, dwRegister); + fputc('\n', DEBUG_FILE); + } +} + +/***********************************************************************/ + +static void regm_MarkRegisterUsed(struct regm_rcode2_s *pReg, + uint32_t dwRegister) +{ + regm_PrintDebugReg("Register used: ", dwRegister); + + switch (regm_GetKind(dwRegister)) + { + case SPECIAL_REG : /* Special "global" registers */ + break; /* (ignored) */ + + case CC_REG : /* Condition code register instance (fake) */ + break; + + case INARG_REG : /* Volatile register for input arguments */ + /* and output values from/to callee */ + break; + + case OUTARG_REG : /* Volatile register for output arguments */ + /* and input values to/from called */ + /* function (fake) */ + break; + + case SCRATCH_REG : /* Volatile register for general usage */ + break; + + case VOLATILE_REG : /* Volatile registers in general */ + case STATIC_REG : /* Static register */ + default: + fatal(ePOFFCONFUSION); + break; + } +#warning "Not Implemeted" +} + +/***********************************************************************/ + +static void regm_MarkRegisterModified(struct regm_rcode2_s *pReg, + uint32_t dwRegister) +{ + regm_PrintDebugReg("Register modified: ", dwRegister); + + switch (regm_GetKind(dwRegister)) + { + case SPECIAL_REG : /* Special "global" registers */ + break; /* (ignored) */ + + case CC_REG : /* Condition code register instance (fake) */ + break; + + case INARG_REG : /* Volatile register for input arguments */ + /* and output values from/to callee */ + break; + + case OUTARG_REG : /* Volatile register for output arguments */ + /* and input values to/from called */ + /* function (fake) */ + break; + + case SCRATCH_REG : /* Volatile register for general usage */ + break; + + case VOLATILE_REG : /* Volatile registers in general */ + case STATIC_REG : /* Static register */ + default: + fatal(ePOFFCONFUSION); + break; + } +#warning "Not Implemeted" +} + +/********************************************************************** + * Public Functions + **********************************************************************/ + +/***********************************************************************/ +/* Generate function prologue: Save return address, create stack frame + * for local variables, and save static registers that till be used. + */ + +void regm_GeneratePrologue(uint32_t dwFrameSize) +{ +#warning "Not implemented" +} + +/***********************************************************************/ +/* Restore static registers, release stack frame and return */ + +void regm_GenerateEpilogue(uint32_t dwFrameSize) +{ +#warning "Not implemented" +} + +/***********************************************************************/ +/* Register-to-register comparisons (e.g., cmp r1, r2) + * + * FORM 1R: <op> <roperand1>, <roperand2> + */ + +void regm_GenerateForm1RCc(uint8_t chOp, uint32_t dwROperand1, + uint32_t dwROperand2, uint32_t dwRCc) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_1RCc; + pReg->chOp = chOp; + pReg->u.f1rcc.dwROperand1 = dwROperand1; + pReg->u.f1rcc.dwROperand2 = dwROperand2; + pReg->u.f1rcc.dwRCc = dwRCc; + + regm_MarkRegisterUsed(pReg, dwROperand1); + regm_MarkRegisterUsed(pReg, dwROperand2); + regm_MarkRegisterModified(pReg, dwRCc); +} + +/***********************************************************************/ +/* Register-to-immediate comparisons (e.g., cmpi r1, 1) + * + * FORM 1I: <op> <roperand1>, <immediate> + */ + +void regm_GenerateForm1ICc(uint8_t chOp, uint32_t dwROperand1, + uint32_t dwImmediate, uint32_t dwRCc) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_1ICc; + pReg->chOp = chOp; + pReg->u.f1icc.dwROperand1 = dwROperand1; + pReg->u.f1icc.dwImmediate = dwImmediate; + pReg->u.f1icc.dwRCc = dwRCc; + + regm_MarkRegisterUsed(pReg, dwROperand1); + regm_MarkRegisterModified(pReg, dwRCc); +} + +/***********************************************************************/ +/* Register-to-register mov instructions (e.g, mov r1, r2) + * + * FORM 2R: <op> <rdest>, <roperand2> + */ + +void regm_GenerateForm2R(uint8_t chOp, uint32_t dwRDest, + uint32_t dwROperand2) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_2R; + pReg->chOp = chOp; + pReg->u.f2r.dwRDest = dwRDest; + pReg->u.f2r.dwROperand2 = dwROperand2; + + regm_MarkRegisterModified(pReg, dwRDest); + regm_MarkRegisterUsed(pReg, dwROperand2); +} + +/***********************************************************************/ +/* Immediate-to-register mov instructions (e.g, movi r1, 1) + * +/* FORM 2I: <op> <rdest>, <immediate> +*/ + +void regm_GenerateForm2I(uint8_t chOp, uint32_t dwRDest, + uint32_t dwImmediate) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_2I; + pReg->chOp = chOp; + pReg->u.f2i.dwRDest = dwRDest; + pReg->u.f2i.dwImmediate = dwImmediate; + + regm_MarkRegisterModified(pReg, dwRDest); +} + +/***********************************************************************/ +/* Binary operations (e.g., add r0, r1, r2) + * Load operations (e.g., ld r0, [r1, r2]) + * Store operations (e.g., st r0, [r1, r2]) + * + * FORM 3R: <op> <rdest>, <roperand1>, <roperand2> + * <rsrc>, <roperand1>, <roperand2> + */ + +void regm_GenerateForm3R(uint8_t chOp, uint32_t dwRSrcDest, + uint32_t dwROperand1, uint32_t dwROperand2) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_3R; + pReg->chOp = chOp; + pReg->u.f3r.dwRSrcDest = dwRSrcDest; + pReg->u.f3r.dwROperand1 = dwROperand1; + pReg->u.f3r.dwROperand2 = dwROperand2; + + switch (chOp) + { + /* FORM 3: Arithmetic and logical operations */ + /* FORM 3: Loads */ + + case rADD : + case rSUB : + case rRSB : + case rMUL : + case rDIV : + case rMOD : + case rSLL : + case rSRL : + case rSRA : + case rOR : + case rAND : + case rXOR : + case rANDN : + case rLD : + case rLDH : + case rLDB : + regm_MarkRegisterModified(pReg, dwRSrcDest); + break; + + /* FORM 3: Loads multiple */ + case rLDM : + { + uint32_t dwRDest = dwRSrcDest; + int i; + for (i = 0; i < g_dwRegisterCount; i++) + { + regm_MarkRegisterModified(pReg, dwRDest); + dwRDest++; + } + } + break; + + /* FORM 3: Stores */ + case rST : + case rSTH : + case rSTB : + regm_MarkRegisterUsed(pReg, dwRSrcDest); + break; + + /* FORM 3: Store multipole */ + case rSTM : + { + uint32_t dwRSrc = dwRSrcDest; + int i; + for (i = 0; i < g_dwRegisterCount; i++) + { + regm_MarkRegisterUsed(pReg, dwRSrc); + dwRSrc++; + } + } + break; + + default: + fatal(ePOFFCONFUSION); + } + + regm_MarkRegisterUsed(pReg, dwROperand1); + regm_MarkRegisterUsed(pReg, dwROperand2); +} + +/***********************************************************************/ +/* Binary operations (e.g., addi r0, r1, 1) + * Load operations (e.g., ldi r0, [r1, 4]) + * Store operations (e.g., sti r0, [r1, 4]) + * + * FORM 3I: <op> <rdest>, <roperand1>, <immediate> + * <rsrc>, <roperand1>, <immediate> + */ + +void regm_GenerateForm3I(uint8_t chOp, uint32_t dwRSrcDest, + uint32_t dwROperand1, uint32_t dwImmediate) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_3I; + pReg->chOp = chOp; + pReg->u.f3i.dwRSrcDest = dwRSrcDest; + pReg->u.f3i.dwROperand1 = dwROperand1; + pReg->u.f3i.dwImmediate = dwImmediate; + + switch (chOp) + { + /* FORM 3: Arithmetic and logical operations */ + /* FORM 3: Loads */ + + case rADDI : + case rSUBI : + case rRSBI : + case rMULI : + case rDIVI : + case rMODI : + case rSLLI : + case rSRLI : + case rSRAI : + case rORI : + case rANDI : + case rXORI : + case rANDNI : + case rLDI : + case rLDIH : + case rLDIB : + regm_MarkRegisterModified(pReg, dwRSrcDest); + break; + + /* FORM 3: Stores */ + case rSTI : + case rSTIH : + case rSTIB : + regm_MarkRegisterUsed(pReg, dwRSrcDest); + break; + + default: + fatal(ePOFFCONFUSION); + } + + regm_MarkRegisterUsed(pReg, dwROperand1); +} + +/***********************************************************************/ +/* Unconditional branch operations (b offset, bl offset) + * + * FORM 4I: <op> <pc-offset> + */ + +void regm_GenerateForm4I(uint8_t chOp, uint32_t dwOffset) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_4I; + pReg->chOp = chOp; + pReg->u.f4i.dwOffset = dwOffset; +} + +/***********************************************************************/ +/* Conditional branch operations (e.g., beq offset) + * + * FORM 4I: <op> <pc-offset> + */ + +void regm_GenerateForm4ICc(uint8_t chOp, uint32_t dwOffset, + uint32_t dwRCc) +{ + struct regm_rcode2_s *pReg = regm_AllocateRCode2(); + pReg->eForm = eFORM_4ICc; + pReg->chOp = chOp; + pReg->u.f4icc.dwOffset = dwOffset; + pReg->u.f4icc.dwRCc = dwRCc; + + regm_MarkRegisterUsed(pReg, dwRCc); +} + +/***********************************************************************/ + +int regm_ForEachRCode2(regm_rcode2_node_t pNode, void *arg) +{ + int ret; + int i; + for (i = 0; i < g_nRCode2; i++) + { + ret = pNode(&g_pRCode2[i], arg); + if (ret != 0) + { + return ret; + } + } + return 0; +} + +/***********************************************************************/ |