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binutils-gdb/sim/arm/armrdi.c

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Wed May 24 14:37:31 1995 Steve Chamberlain <sac@slash.cygnus.com> * New.
1995-05-25 05:45:01 +08:00
/* armrdi.c -- ARMulator RDI interface: ARM6 Instruction Emulator.
Copyright (C) 1994 Advanced RISC Machines Ltd.
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 <string.h>
#include <ctype.h>
#include "armdefs.h"
#include "armemu.h"
#include "armos.h"
#include "dbg_cp.h"
#include "dbg_conf.h"
#include "dbg_rdi.h"
#include "dbg_hif.h"
#include "communicate.h"
/***************************************************************************\
* Declarations *
\***************************************************************************/
#define Watch_AnyRead (RDIWatch_ByteRead+RDIWatch_HalfRead+RDIWatch_WordRead)
#define Watch_AnyWrite (RDIWatch_ByteWrite+RDIWatch_HalfWrite+RDIWatch_WordWrite)
static unsigned FPRegsAddr ; /* last known address of FPE regs */
#define FPESTART 0x2000L
#define FPEEND 0x8000L
#define IGNORE(d) (d = d)
#ifdef RDI_VERBOSE
#define TracePrint(s) \
if (rdi_log & 1) ARMul_DebugPrint s
#else
#define TracePrint(s)
#endif
static ARMul_State *state = NULL ;
static unsigned BreaksSet ; /* The number of breakpoints set */
static int rdi_log = 0 ; /* debugging ? */
#define LOWEST_RDI_LEVEL 0
#define HIGHEST_RDI_LEVEL 1
static int MYrdi_level = LOWEST_RDI_LEVEL;
typedef struct BreakNode BreakNode;
typedef struct WatchNode WatchNode;
struct BreakNode { /* A breakpoint list node */
BreakNode *next ;
ARMword address ; /* The address of this breakpoint */
unsigned type ; /* The type of comparison */
ARMword bound ; /* The other address for a range */
ARMword inst;
};
struct WatchNode { /* A watchpoint list node */
WatchNode *next ;
ARMword address ; /* The address of this watchpoint */
unsigned type ; /* The type of comparison */
unsigned datatype ; /* The type of access to watch for */
ARMword bound ; /* The other address for a range */
};
BreakNode *BreakList = NULL ;
WatchNode *WatchList = NULL ;
void ARMul_DebugPrint_i(const Dbg_HostosInterface *hostif, const char *format, ...)
{ va_list ap;
va_start(ap, format);
hostif->dbgprint(hostif->dbgarg, format, ap);
va_end(ap);
}
void ARMul_DebugPrint(ARMul_State *state, const char *format, ...)
{ va_list ap;
va_start(ap, format);
if(!(rdi_log & 8))
state->hostif->dbgprint(state->hostif->dbgarg, format, ap);
va_end(ap);
}
#define CONSOLE_PRINT_MAX_LEN 128
void ARMul_ConsolePrint(ARMul_State *state, const char *format, ...)
{
va_list ap;
int ch;
char *str, buf[CONSOLE_PRINT_MAX_LEN];
int i, j;
ARMword junk;
va_start(ap, format);
vsprintf(buf, format, ap);
for (i = 0; buf[i] ;i++); /* The string is i chars long */
str = buf;
while (i >= 32) {
MYwrite_char(kidmum[1], RDP_OSOp);
MYwrite_word(kidmum[1], SWI_Write0);
MYwrite_char(kidmum[1], OS_SendString);
MYwrite_char(kidmum[1], 32); /* Send string 32bytes at a time */
for (j = 0; j < 32; j++, str++)
MYwrite_char(kidmum[1], *str);
wait_for_osreply(&junk);
i -= 32;
}
if (i > 0) {
MYwrite_char(kidmum[1], RDP_OSOp);
MYwrite_word(kidmum[1], SWI_Write0);
MYwrite_char(kidmum[1], OS_SendString);
MYwrite_char(kidmum[1], (unsigned char) i); /* Send remainder of string */
for (j = 0; j < i; j++, str++)
MYwrite_char(kidmum[1], *str);
wait_for_osreply(&junk);
}
return;
/* str = buf; */
/* while ((ch=*str++) != 0) */
/* state->hostif->writec(state->hostif->hostosarg, ch); */
}
void ARMul_DebugPause(ARMul_State *state)
{
if(!(rdi_log & 8))
state->hostif->dbgpause(state->hostif->dbgarg);
}
/***************************************************************************\
* RDI_open *
\***************************************************************************/
static void InitFail(int exitcode, char const *which) {
ARMul_ConsolePrint(state, "%s interface failed to initialise. Exiting\n",
which);
exit(exitcode);
}
static void RDIInit(unsigned type)
{if (type == 0) { /* cold start */
state->CallDebug = state->MemReadDebug = state->MemWriteDebug = 0 ;
BreaksSet = 0 ;
}
}
#define UNKNOWNPROC 0
typedef struct { char name[16]; unsigned val; } Processor;
Processor const p_arm2 = {"ARM2", ARM2};
Processor const p_arm2as = {"ARM2AS", ARM2as};
Processor const p_arm61 = {"ARM61", ARM61};
Processor const p_arm3 = {"ARM3", ARM3};
Processor const p_arm6 = {"ARM6", ARM6};
Processor const p_arm60 = {"ARM60", ARM60};
Processor const p_arm600 = {"ARM600", ARM600};
Processor const p_arm610 = {"ARM610", ARM610};
Processor const p_arm620 = {"ARM620", ARM620};
Processor const p_unknown= {"", UNKNOWNPROC};
Processor const *const processors[] = {
&p_arm6, /* default: must come first */
&p_arm2,
&p_arm2as,
&p_arm61,
&p_arm3,
&p_arm60,
&p_arm600,
&p_arm610,
&p_arm620,
&p_unknown
};
typedef struct ProcessorConfig ProcessorConfig;
struct ProcessorConfig {
long id[2];
ProcessorConfig const *self;
long count;
Processor const * const *processors;
};
ProcessorConfig const processorconfig = {
{ ((((((long)'x' << 8) | ' ') << 8) | 'c') << 8) | 'p',
((((((long)'u' << 8) | 's') << 8) | ' ') << 8) | 'x'
},
&processorconfig,
16,
processors
};
static int RDI_open(unsigned type, const Dbg_ConfigBlock *config,
const Dbg_HostosInterface *hostif,
struct Dbg_MCState *dbg_state)
/* Initialise everything */
{int virgin = (state == NULL);
IGNORE(dbg_state);
#ifdef RDI_VERBOSE
if (rdi_log & 1) {
if (virgin)
ARMul_DebugPrint_i(hostif, "RDI_open: type = %d\n",type) ;
else
ARMul_DebugPrint(state, "RDI_open: type = %d\n",type) ;
}
#endif
if (type & 1) { /* Warm start */
ARMul_Reset(state) ;
RDIInit(1) ;
}
else {
if (virgin) {
ARMul_EmulateInit();
state = ARMul_NewState();
state->hostif = hostif;
{ int req = config->processor;
unsigned processor = processors[req]->val;
ARMul_SelectProcessor(state, processor);
ARMul_Reset(state);
ARMul_ConsolePrint(state, "ARMulator V1.50, %s", processors[req]->name);
}
if (ARMul_MemoryInit(state,config->memorysize) == FALSE)
InitFail(1, "Memory");
if (config->bytesex != RDISex_DontCare)
state->bigendSig = config->bytesex ;
if (ARMul_CoProInit(state) == FALSE)
InitFail(2, "Co-Processor");
if (ARMul_OSInit(state) == FALSE)
InitFail(3, "Operating System");
}
ARMul_Reset(state) ;
RDIInit(0) ;
}
if (type & 2) { /* Reset the comms link */
/* what comms link ? */
}
if (virgin && (type & 1) == 0) /* Cold start */
ARMul_ConsolePrint(state, ", %s endian.\n",
state->bigendSig ? "Big" : "Little");
if (config->bytesex == RDISex_DontCare)
return(state->bigendSig ? RDIError_BigEndian : RDIError_LittleEndian);
else
return(RDIError_NoError) ;
}
/***************************************************************************\
* RDI_close *
\***************************************************************************/
static int RDI_close(void)
{
TracePrint((state, "RDI_close\n"));
ARMul_OSExit(state) ;
ARMul_CoProExit(state) ;
ARMul_MemoryExit(state) ;
return(RDIError_NoError) ;
}
/***************************************************************************\
* RDI_read *
\***************************************************************************/
static int RDI_read(ARMword source, void *dest, unsigned *nbytes)
{unsigned i ;
char *memptr = (char *)dest ;
TracePrint((state, "RDI_read: source=%.8lx dest=%p nbytes=%.8x\n",
source, dest, *nbytes));
for (i=0 ; i < *nbytes ; i++)
*memptr++ = (char)ARMul_ReadByte(state,source++) ;
if (state->abortSig) {
state->abortSig = LOW ;
return(RDIError_DataAbort) ;
}
return(RDIError_NoError) ;
}
/***************************************************************************\
* RDI_write *
\***************************************************************************/
static int RDI_write(const void *source, ARMword dest, unsigned *nbytes)
{unsigned i ;
char *memptr = (char *)source ;
TracePrint((state, "RDI_write: source=%p dest=%.8lx nbytes=%.8x\n",
source, dest, *nbytes));
for (i=0 ; i < *nbytes ; i++)
ARMul_WriteByte(state,(ARMword)dest++,(ARMword)*memptr++) ;
if (state->abortSig) {
state->abortSig = LOW ;
return(RDIError_DataAbort) ;
}
return(RDIError_NoError) ;
}
/***************************************************************************\
* RDI_CPUread *
\***************************************************************************/
static int RDI_CPUread(unsigned mode, unsigned long mask, ARMword buffer[])
{unsigned i , upto ;
if (mode == RDIMode_Curr)
mode = (unsigned)(ARMul_GetCPSR(state) & MODEBITS) ;
for (upto = 0, i = 0 ; i < 15 ; i++)
if (mask & (1L << i)){
buffer[upto++] = ARMul_GetReg(state,mode,i) ;
}
if (mask & RDIReg_R15) {
buffer[upto++] = ARMul_GetR15(state) ;
}
if (mask & RDIReg_PC) {
buffer[upto++] = ARMul_GetPC(state) ;
}
if (mask & RDIReg_CPSR)
buffer[upto++] = ARMul_GetCPSR(state) ;
if (mask & RDIReg_SPSR)
buffer[upto++] = ARMul_GetSPSR(state,mode) ;
TracePrint((state, "RDI_CPUread: mode=%.8x mask=%.8lx", mode, mask));
#ifdef RDI_VERBOSE
if (rdi_log & 1) {
for (upto = 0, i = 0 ; i <= 20 ; i++)
if (mask & (1L << i)) {
ARMul_DebugPrint(state, "%c%.8lx",upto%4==0?'\n':' ',buffer[upto]) ;
upto++ ;
}
ARMul_DebugPrint(state, "\n") ;
}
#endif
return(RDIError_NoError) ;
}
/***************************************************************************\
* RDI_CPUwrite *
\***************************************************************************/
static int RDI_CPUwrite(unsigned mode, unsigned long mask, ARMword const buffer[])
{int i, upto;
TracePrint((state, "RDI_CPUwrite: mode=%.8x mask=%.8lx", mode, mask));
#ifdef RDI_VERBOSE
if (rdi_log & 1) {
for (upto = 0, i = 0 ; i <= 20 ; i++)
if (mask & (1L << i)) {
ARMul_DebugPrint(state, "%c%.8lx",upto%4==0?'\n':' ',buffer[upto]) ;
upto++ ;
}
ARMul_DebugPrint(state, "\n") ;
}
#endif
if (mode == RDIMode_Curr)
mode = (unsigned)(ARMul_GetCPSR(state) & MODEBITS) ;
for (upto = 0, i = 0 ; i < 15 ; i++)
if (mask & (1L << i))
ARMul_SetReg(state,mode,i,buffer[upto++]) ;
if (mask & RDIReg_R15)
ARMul_SetR15(state,buffer[upto++]) ;
if (mask & RDIReg_PC) {
ARMul_SetPC(state,buffer[upto++]) ;
}
if (mask & RDIReg_CPSR)
ARMul_SetCPSR(state,buffer[upto++]) ;
if (mask & RDIReg_SPSR)
ARMul_SetSPSR(state,mode,buffer[upto++]) ;
return(RDIError_NoError) ;
}
/***************************************************************************\
* RDI_CPread *
\***************************************************************************/
static int RDI_CPread(unsigned CPnum, unsigned long mask, ARMword buffer[])
{ARMword fpregsaddr, word[4] ;
unsigned r, w ;
unsigned upto ;
if (CPnum != 1 && CPnum != 2) {
unsigned char const *rmap = state->CPRegWords[CPnum];
if (rmap == NULL)
return(RDIError_UnknownCoPro) ;
for (upto = 0, r = 0 ; r < rmap[-1] ; r++)
if (mask & (1L << r)) {
(void)state->CPRead[CPnum](state, r, &buffer[upto]);
upto += rmap[r];
}
TracePrint((state, "RDI_CPread: CPnum=%d mask=%.8lx", CPnum, mask));
#ifdef RDI_VERBOSE
if (rdi_log & 1) {
w = 0;
for (upto = 0, r = 0; r < rmap[-1]; r++)
if (mask & (1L << r)) {
int words = rmap[r];
ARMul_DebugPrint(state, "%c%2d", (w >= 4 ? (w = 0, '\n') : ' '), r);
while (--words >= 0) {
ARMul_DebugPrint(state, " %.8lx", buffer[upto++]);
w++;
}
}
ARMul_DebugPrint(state, "\n") ;
}
#endif
return RDIError_NoError;
}
#ifdef NOFPE
return RDIError_UnknownCoPro;
#else
if (FPRegsAddr == 0) {
fpregsaddr = ARMul_ReadWord(state, 4L) ;
if ((fpregsaddr & 0xff800000) != 0xea000000) /* Must be a forward branch */
return RDIError_UnknownCoPro;
fpregsaddr = ((fpregsaddr & 0xffffff) << 2) + 8 ; /* address in __fp_decode - 4 */
if ((fpregsaddr < FPESTART) || (fpregsaddr >= FPEEND))
return RDIError_UnknownCoPro;
fpregsaddr = ARMul_ReadWord(state, fpregsaddr) ; /* pointer to fp registers */
FPRegsAddr = fpregsaddr ;
}
else
fpregsaddr = FPRegsAddr ;
if (fpregsaddr == 0) return RDIError_UnknownCoPro;
for (upto = 0, r = 0 ; r < 8 ; r++)
if (mask & (1L << r)) {
for (w = 0 ; w < 4 ; w++)
word[w] = ARMul_ReadWord(state,fpregsaddr + (ARMword)r * 16 + (ARMword)w * 4) ;
switch ((int)(word[3] >> 29)) {
case 0 :
case 2 :
case 4 :
case 6 : /* its unpacked, convert to extended */
buffer[upto++] = 2 ; /* mark as extended */
buffer[upto++] = (word[3] & 0x7fff) | (word[0] & 0x80000000) ; /* exp and sign */
buffer[upto++] = word[1] ; /* mantissa 1 */
buffer[upto++] = word[2] ; /* mantissa 2 */
break ;
case 1 : /* packed single */
buffer[upto++] = 0 ; /* mark as single */
buffer[upto++] = word[0] ; /* sign, exp and mantissa */
buffer[upto++] = word[1] ; /* padding */
buffer[upto++] = word[2] ; /* padding */
break ;
case 3 : /* packed double */
buffer[upto++] = 1 ; /* mark as double */
buffer[upto++] = word[0] ; /* sign, exp and mantissa1 */
buffer[upto++] = word[1] ; /* mantissa 2 */
buffer[upto++] = word[2] ; /* padding */
break ;
case 5 : /* packed extended */
buffer[upto++] = 2 ; /* mark as extended */
buffer[upto++] = word[0] ; /* sign and exp */
buffer[upto++] = word[1] ; /* mantissa 1 */
buffer[upto++] = word[2] ; /* mantissa 2 */
break ;
case 7 : /* packed decimal */
buffer[upto++] = 3 ; /* mark as packed decimal */
buffer[upto++] = word[0] ; /* sign, exp and mantissa1 */
buffer[upto++] = word[1] ; /* mantissa 2 */
buffer[upto++] = word[2] ; /* mantissa 3 */
break ;
}
}
if (mask & (1L << r))
buffer[upto++] = ARMul_ReadWord(state,fpregsaddr + 128) ; /* fpsr */
if (mask & (1L << (r+1) ))
buffer[upto++] = 0 ; /* fpcr */
TracePrint((state, "RDI_CPread: CPnum=%d mask=%.8lx\n", CPnum, mask));
#ifdef RDI_VERBOSE
if (rdi_log & 1) {
for (upto = 0, r = 0 ; r < 9 ; r++)
if (mask & (1L << r)) {
if (r != 8) {
ARMul_DebugPrint(state, "%08lx ",buffer[upto++]) ;
ARMul_DebugPrint(state, "%08lx ",buffer[upto++]) ;
ARMul_DebugPrint(state, "%08lx ",buffer[upto++]) ;
}
ARMul_DebugPrint(state, "%08lx\n",buffer[upto++]) ;
}
ARMul_DebugPrint(state, "\n") ;
}
#endif
return(RDIError_NoError) ;
#endif /* NOFPE */
}
/***************************************************************************\
* RDI_CPwrite *
\***************************************************************************/
static int RDI_CPwrite(unsigned CPnum, unsigned long mask, ARMword const buffer[])
{unsigned r ;
unsigned upto ;
ARMword fpregsaddr;
if (CPnum != 1 && CPnum != 2) {
unsigned char const *rmap = state->CPRegWords[CPnum];
if (rmap == NULL)
return(RDIError_UnknownCoPro) ;
TracePrint((state, "RDI_CPwrite: CPnum=%d mask=%.8lx", CPnum, mask));
#ifdef RDI_VERBOSE
if (rdi_log & 1) {
int w = 0;
for (upto = 0, r = 0; r < rmap[-1]; r++)
if (mask & (1L << r)) {
int words = rmap[r];
ARMul_DebugPrint(state, "%c%2d", (w >= 4 ? (w = 0, '\n') : ' '), r);
while (--words >= 0) {
ARMul_DebugPrint(state, " %.8lx", buffer[upto++]);
w++;
}
}
ARMul_DebugPrint(state, "\n") ;
}
#endif
for (upto = 0, r = 0; r < rmap[-1]; r++)
if (mask & (1L << r)) {
(void)state->CPWrite[CPnum](state, r, &buffer[upto]);
upto += rmap[r];
}
return RDIError_NoError;
}
#ifdef NOFPE
return RDIError_UnknownCoPro;
#else
TracePrint((state, "RDI_CPwrite: CPnum=%d mask=%.8lx", CPnum, mask));
#ifdef RDI_VERBOSE
if (rdi_log & 1) {
for (upto = 0, r = 0 ; r < 9 ; r++)
if (mask & (1L << r)) {
if (r != 8) {
ARMul_DebugPrint(state, "%08lx ",buffer[upto++]) ;
ARMul_DebugPrint(state, "%08lx ",buffer[upto++]) ;
ARMul_DebugPrint(state, "%08lx ",buffer[upto++]) ;
}
ARMul_DebugPrint(state, "%08lx\n",buffer[upto++]) ;
}
ARMul_DebugPrint(state, "\n") ;
}
#endif
if (FPRegsAddr == 0) {
fpregsaddr = ARMul_ReadWord(state, 4L) ;
if ((fpregsaddr & 0xff800000) != 0xea000000) /* Must be a forward branch */
return RDIError_UnknownCoPro;
fpregsaddr = ((fpregsaddr & 0xffffff) << 2) + 8 ; /* address in __fp_decode - 4 */
if ((fpregsaddr < FPESTART) || (fpregsaddr >= FPEEND))
return RDIError_UnknownCoPro;
fpregsaddr = ARMul_ReadWord(state, fpregsaddr) ; /* pointer to fp registers */
FPRegsAddr = fpregsaddr ;
}
else
fpregsaddr = FPRegsAddr ;
if (fpregsaddr == 0) return RDIError_UnknownCoPro;
for (upto = 0, r = 0 ; r < 8 ; r++)
if (mask & (1L << r)) {
ARMul_WriteWord(state,fpregsaddr + (ARMword)r * 16,buffer[upto+1]) ;
ARMul_WriteWord(state,fpregsaddr + (ARMword)r * 16 + 4,buffer[upto+2]) ;
ARMul_WriteWord(state,fpregsaddr + (ARMword)r * 16 + 8,buffer[upto+3]) ;
ARMul_WriteWord(state,fpregsaddr + (ARMword)r * 16 + 12,(buffer[upto] * 2 + 1) << 29) ; /* mark type */
upto += 4 ;
}
if (mask & (1L << r))
ARMul_WriteWord(state,fpregsaddr + 128,buffer[upto++]) ; /* fpsr */
return(RDIError_NoError) ;
#endif /* NOFPE */
}
static void deletebreaknode(BreakNode **prevp) {
BreakNode *p = *prevp;
*prevp = p->next;
ARMul_WriteWord(state, p->address, p->inst);
free((char *)p);
BreaksSet-- ;
state->CallDebug-- ;
}
static int removebreak(ARMword address, unsigned type)
{ BreakNode *p, **prevp = &BreakList;
for (; (p = *prevp) != NULL ; prevp = &p->next)
if (p->address == address && p->type == type) {
deletebreaknode(prevp);
return TRUE;
}
return FALSE;
}
/* This routine installs a breakpoint into the breakpoint table */
static BreakNode *installbreak(ARMword address, unsigned type, ARMword bound)
{ BreakNode *p = (BreakNode *)malloc(sizeof(BreakNode));
p->next = BreakList;
BreakList = p;
p->address = address;
p->type = type;
p->bound = bound;
p->inst = ARMul_ReadWord(state, address);
ARMul_WriteWord(state, address, 0xee000000L);
return p;
}
/***************************************************************************\
* RDI_setbreak *
\***************************************************************************/
static int RDI_setbreak(ARMword address, unsigned type, ARMword bound,
PointHandle *handle)
{ BreakNode *p;
TracePrint((state, "RDI_setbreak: address=%.8lx type=%d bound=%.8lx\n",
address, type, bound));
removebreak(address, type);
p = installbreak(address, type, bound);
BreaksSet++ ;
state->CallDebug++ ;
*handle = (PointHandle)p;
TracePrint((state, " returns %.8lx\n", *handle));
return RDIError_NoError;
}
/***************************************************************************\
* RDI_clearbreak *
\***************************************************************************/
static int RDI_clearbreak(PointHandle handle)
{ TracePrint((state, "RDI_clearbreak: address=%.8lx\n", handle));
{ BreakNode *p, **prevp = &BreakList;
for (; (p = *prevp) != NULL; prevp = &p->next)
if (p == (BreakNode *)handle) break;
if (p == NULL) return RDIError_NoSuchPoint;
deletebreaknode(prevp);
return RDIError_NoError;
}
}
/***************************************************************************\
* Internal functions for breakpoint table manipulation *
\***************************************************************************/
static void deletewatchnode(WatchNode **prevp)
{ WatchNode *p = *prevp;
if (p->datatype & Watch_AnyRead) state->MemReadDebug--;
if (p->datatype & Watch_AnyWrite) state->MemWriteDebug--;
*prevp = p->next;
free((char *)p);
}
int removewatch(ARMword address, unsigned type)
{ WatchNode *p, **prevp = &WatchList;
for (; (p = *prevp) != NULL ; prevp = &p->next)
if (p->address == address && p->type == type) { /* found a match */
deletewatchnode(prevp);
return TRUE;
}
return FALSE; /* never found a match */
}
static WatchNode *installwatch(ARMword address, unsigned type, unsigned datatype,
ARMword bound)
{ WatchNode *p = (WatchNode *)malloc(sizeof(WatchNode));
p->next = WatchList;
WatchList = p;
p->address = address;
p->type = type;
p->datatype = datatype;
p->bound = bound;
return p;
}
/***************************************************************************\
* RDI_setwatch *
\***************************************************************************/
static int RDI_setwatch(ARMword address, unsigned type, unsigned datatype,
ARMword bound, PointHandle *handle)
{ WatchNode *p;
TracePrint((state, "RDI_setwatch: address=%.8lx type=%d datatype=%d bound=%.8lx",
address, type, datatype, bound));
if (!state->CanWatch) return RDIError_UnimplementedMessage;
removewatch(address, type);
p = installwatch(address, type, datatype, bound);
if (datatype & Watch_AnyRead) state->MemReadDebug++;
if (datatype & Watch_AnyWrite) state->MemWriteDebug++;
*handle = (PointHandle)p;
TracePrint((state, " returns %.8lx\n", *handle));
return RDIError_NoError;
}
/***************************************************************************\
* RDI_clearwatch *
\***************************************************************************/
static int RDI_clearwatch(PointHandle handle)
{ TracePrint((state, "RDI_clearwatch: address=%.8lx\n", handle));
{ WatchNode *p, **prevp = &WatchList;
for (; (p = *prevp) != NULL; prevp = &p->next)
if (p == (WatchNode *)handle) break;
if (p == NULL) return RDIError_NoSuchPoint;
deletewatchnode(prevp);
return RDIError_NoError;
}
}
/***************************************************************************\
* RDI_execute *
\***************************************************************************/
static int RDI_execute(PointHandle *handle)
{
TracePrint((state, "RDI_execute\n"));
if (rdi_log & 4) {
state->CallDebug++ ;
state->Debug = TRUE ;
}
state->EndCondition = RDIError_NoError ;
state->StopHandle = 0;
ARMul_DoProg(state);
*handle = state->StopHandle;
state->Reg[15] -= 8 ; /* undo the pipeline */
if (rdi_log & 4) {
state->CallDebug-- ;
state->Debug = FALSE ;
}
return(state->EndCondition) ;
}
/***************************************************************************\
* RDI_step *
\***************************************************************************/
static int RDI_step(unsigned ninstr, PointHandle *handle)
{
TracePrint((state, "RDI_step\n"));
if (ninstr != 1) return RDIError_UnimplementedMessage;
if (rdi_log & 4) {
state->CallDebug++ ;
state->Debug = TRUE ;
}
state->EndCondition = RDIError_NoError ;
state->StopHandle = 0;
ARMul_DoInstr(state) ;
*handle = state->StopHandle;
state->Reg[15] -= 8 ; /* undo the pipeline */
if (rdi_log & 4) {
state->CallDebug-- ;
state->Debug = FALSE ;
}
return(state->EndCondition) ;
}
/***************************************************************************\
* RDI_info *
\***************************************************************************/
static int RDI_info(unsigned type, ARMword *arg1, ARMword *arg2)
{
switch (type) {
case RDIInfo_Target:
TracePrint((state, "RDI_Info_Target\n"));
/* Emulator, speed 10**5 IPS */
*arg1 = 5 | HIGHEST_RDI_LEVEL << 5 | LOWEST_RDI_LEVEL << 8;
*arg2 = 1298224434;
return RDIError_NoError;
case RDIInfo_Points:
{ ARMword n = RDIPointCapability_Comparison | RDIPointCapability_Range |
RDIPointCapability_Mask | RDIPointCapability_Status;
TracePrint((state, "RDI_Info_Points\n"));
if (state->CanWatch) n |= (Watch_AnyRead+Watch_AnyWrite) << 2;
*arg1 = n;
return RDIError_NoError;
}
case RDIInfo_Step:
TracePrint((state, "RDI_Info_Step\n"));
*arg1 = RDIStep_Single;
return RDIError_NoError;
case RDIInfo_MMU:
TracePrint((state, "RDI_Info_MMU\n"));
*arg1 = 1313820229 ;
return RDIError_NoError;
case RDISignal_Stop:
TracePrint((state, "RDISignal_Stop\n"));
state->CallDebug++ ;
state->EndCondition = RDIError_UserInterrupt ;
return RDIError_NoError;
case RDIVector_Catch:
TracePrint((state, "RDIVector_Catch %.8lx\n", *arg1));
state->VectorCatch = (unsigned)*arg1 ;
return RDIError_NoError;
case RDISet_Cmdline:
TracePrint((state, "RDI_Set_Cmdline %s\n", (char *)arg1));
state->CommandLine = (char *)malloc((unsigned)strlen((char *)arg1)+1) ;
(void)strcpy(state->CommandLine,(char *)arg1) ;
return RDIError_NoError;
case RDICycles:
TracePrint((state, "RDI_Info_Cycles\n"));
arg1[0] = 0;
arg1[1] = state->NumInstrs;
arg1[2] = 0;
arg1[3] = state->NumScycles;
arg1[4] = 0;
arg1[5] = state->NumNcycles;
arg1[6] = 0;
arg1[7] = state->NumIcycles;
arg1[8] = 0;
arg1[9] = state->NumCcycles;
arg1[10] = 0;
arg1[11] = state->NumFcycles;
return RDIError_NoError;
case RDIErrorP:
*arg1 = ARMul_OSLastErrorP(state);
TracePrint((state, "RDI_ErrorP returns %ld\n", *arg1));
return RDIError_NoError;
case RDIInfo_DescribeCoPro:
{ int cpnum = *(int *)arg1;
struct Dbg_CoProDesc *cpd = (struct Dbg_CoProDesc *)arg2;
int i;
unsigned char const *map = state->CPRegWords[cpnum];
if (map == NULL) return RDIError_UnknownCoPro;
for (i = 0; i < cpd->entries; i++) {
unsigned r, w = cpd->regdesc[i].nbytes / sizeof(ARMword);
for (r = cpd->regdesc[i].rmin; r <= cpd->regdesc[i].rmax; r++)
if (map[r] != w) return RDIError_BadCoProState;
}
return RDIError_NoError;
}
case RDIInfo_RequestCoProDesc:
{ int cpnum = *(int *)arg1;
struct Dbg_CoProDesc *cpd = (struct Dbg_CoProDesc *)arg2;
int i = -1, lastw = -1, r;
unsigned char const *map;
if ((unsigned)cpnum >= 16) return RDIError_UnknownCoPro;
map = state->CPRegWords[cpnum];
if (map == NULL) return RDIError_UnknownCoPro;
for (r = 0; r < map[-1]; r++) {
int words = map[r];
if (words == lastw)
cpd->regdesc[i].rmax = r;
else {
if (++i >= cpd->entries) return RDIError_BufferFull;
cpd->regdesc[i].rmax = cpd->regdesc[i].rmin = r;
cpd->regdesc[i].nbytes = words * sizeof(ARMword);
cpd->regdesc[i].access = Dbg_Access_Readable+Dbg_Access_Writable;
}
}
cpd->entries = i+1;
return RDIError_NoError;
}
case RDIInfo_Log:
*arg1 = (ARMword)rdi_log;
return RDIError_NoError;
case RDIInfo_SetLog:
rdi_log = (int)*arg1;
return RDIError_NoError;
case RDIInfo_CoPro:
return RDIError_NoError;
case RDIPointStatus_Watch:
{ WatchNode *p, *handle = (WatchNode *)*arg1;
for (p = WatchList; p != NULL; p = p->next)
if (p == handle) {
*arg1 = -1;
*arg2 = 1;
return RDIError_NoError;
}
return RDIError_NoSuchPoint;
}
case RDIPointStatus_Break:
{ BreakNode *p, *handle = (BreakNode *)*arg1;
for (p = BreakList; p != NULL; p = p->next)
if (p == handle) {
*arg1 = -1;
*arg2 = 1;
return RDIError_NoError;
}
return RDIError_NoSuchPoint;
}
case RDISet_RDILevel:
if (*arg1 < LOWEST_RDI_LEVEL || *arg1 > HIGHEST_RDI_LEVEL)
return RDIError_IncompatibleRDILevels;
MYrdi_level = *arg1;
return RDIError_NoError;
default:
return RDIError_UnimplementedMessage;
}
}
/***************************************************************************\
* The emulator calls this routine at the beginning of every cycle when the *
* CallDebug flag is set. The second parameter passed is the address of the *
* currently executing instruction (i.e Program Counter - 8), the third *
* parameter is the instruction being executed. *
\***************************************************************************/
ARMword ARMul_Debug(ARMul_State *state, ARMword pc, ARMword instr)
{
if (state->EndCondition == RDIError_UserInterrupt) {
TracePrint((state, "User interrupt at %.8lx\n", pc));
state->CallDebug--;
state->Emulate = STOP;
} else {
BreakNode *p = BreakList;
for (; p != NULL ; p = p->next) {
switch (p->type) {
case RDIPoint_EQ: if (pc == p->address) break; continue;
case RDIPoint_GT: if (pc > p->address) break; continue;
case RDIPoint_GE: if (pc >= p->address) break; continue;
case RDIPoint_LT: if (pc < p->address) break; continue;
case RDIPoint_LE: if (pc <= p->address) break; continue;
case RDIPoint_IN: if (p->address <= pc && pc < p->address+p->bound) break;
continue;
case RDIPoint_OUT:if (p->address > pc || pc >= p->address+p->bound) break;
continue;
case RDIPoint_MASK:if ((pc & p->bound) == p->address) break; continue;
}
/* found a match */
TracePrint((state, "Breakpoint reached at %.8lx\n", pc));
state->EndCondition = RDIError_BreakpointReached ;
state->Emulate = STOP;
state->StopHandle = (ARMword)p;
break;
}
}
return instr;
}
void ARMul_CheckWatch(ARMul_State *state, ARMword addr, int access)
{ WatchNode *p;
for (p = WatchList; p != NULL; p = p->next)
if (p->datatype & access) {
switch (p->type) {
case RDIPoint_EQ: if (addr == p->address) break; continue;
case RDIPoint_GT: if (addr > p->address) break; continue;
case RDIPoint_GE: if (addr >= p->address) break; continue;
case RDIPoint_LT: if (addr < p->address) break; continue;
case RDIPoint_LE: if (addr <= p->address) break; continue;
case RDIPoint_IN: if (p->address <= addr && addr < p->address+p->bound) break;
continue;
case RDIPoint_OUT:if (p->address > addr || addr >= p->address+p->bound) break;
continue;
case RDIPoint_MASK:if ((addr & p->bound) == p->address) break; continue;
}
/* found a match */
TracePrint((state, "Watchpoint at %.8lx accessed\n", addr));
state->EndCondition = RDIError_WatchpointAccessed;
state->Emulate = STOP;
state->StopHandle = (ARMword)p;
return;
}
}
static RDI_NameList const *RDI_cpunames() {
return (RDI_NameList const *)&processorconfig.count;
}
const struct RDIProcVec armul_rdi = {
"ARMUL",
RDI_open,
RDI_close,
RDI_read,
RDI_write,
RDI_CPUread,
RDI_CPUwrite,
RDI_CPread,
RDI_CPwrite,
RDI_setbreak,
RDI_clearbreak,
RDI_setwatch,
RDI_clearwatch,
RDI_execute,
RDI_step,
RDI_info,
0, /*pointinq*/
0, /*addconfig*/
0, /*loadconfigdata*/
0, /*selectconfig*/
0, /*drivernames*/
RDI_cpunames
};
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