*/
-/* The TRACE manifests enable the provision of extra features. If they
- are not defined then a simpler (quicker) simulator is constructed
- without the required run-time checks, etc. */
-#if 1 /* 0 to allow user build selection, 1 to force inclusion */
-#define TRACE (1)
-#endif
-
+#include "config.h"
#include "bfd.h"
#include "sim-main.h"
#include "sim-utils.h"
#include "gdb/callback.h" /* GDB simulator callback interface */
#include "gdb/remote-sim.h" /* GDB simulator interface */
-#include "sysdep.h"
-
-#ifndef PARAMS
-#define PARAMS(x)
-#endif
-
-char* pr_addr PARAMS ((SIM_ADDR addr));
-char* pr_uword64 PARAMS ((uword64 addr));
+char* pr_addr (SIM_ADDR addr);
+char* pr_uword64 (uword64 addr);
/* Within interp.c we refer to the sim_state and sim_cpu directly. */
trap is required. NOTE: Care must be taken, since this value may be
used in later revisions of the MIPS ISA. */
-#define RSVD_INSTRUCTION (0x00000005)
+#define RSVD_INSTRUCTION (0x00000039)
#define RSVD_INSTRUCTION_MASK (0xFC00003F)
#define RSVD_INSTRUCTION_ARG_SHIFT 6
/*-- GDB simulator interface ------------------------------------------------*/
/*---------------------------------------------------------------------------*/
-static void ColdReset PARAMS((SIM_DESC sd));
+static void ColdReset (SIM_DESC sd);
/*---------------------------------------------------------------------------*/
static SIM_RC sim_firmware_command (SIM_DESC sd, char* arg);
-
#define MEM_SIZE (8 << 20) /* 8 MBytes */
-#if defined(TRACE)
+#if WITH_TRACE_ANY_P
static char *tracefile = "trace.din"; /* default filename for trace log */
FILE *tracefh = NULL;
-static void open_trace PARAMS((SIM_DESC sd));
-#endif /* TRACE */
+static void open_trace (SIM_DESC sd);
+#else
+#define open_trace(sd)
+#endif
static const char * get_insn_name (sim_cpu *, int);
OPTION_DINERO_TRACE = OPTION_START,
OPTION_DINERO_FILE,
OPTION_FIRMWARE,
+ OPTION_INFO_MEMORY,
OPTION_BOARD
};
+static int display_mem_info = 0;
static SIM_RC
-mips_option_handler (sd, cpu, opt, arg, is_command)
- SIM_DESC sd;
- sim_cpu *cpu;
- int opt;
- char *arg;
- int is_command;
+mips_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, char *arg,
+ int is_command)
{
int cpu_nr;
switch (opt)
{
case OPTION_DINERO_TRACE: /* ??? */
-#if defined(TRACE)
+#if WITH_TRACE_ANY_P
/* Eventually the simTRACE flag could be treated as a toggle, to
allow external control of the program points being traced
(i.e. only from main onwards, excluding the run-time setup,
}
}
return SIM_RC_OK;
-#else /* !TRACE */
+#else /* !WITH_TRACE_ANY_P */
fprintf(stderr,"\
Simulator constructed without dinero tracing support (for performance).\n\
-Re-compile simulator with \"-DTRACE\" to enable this option.\n");
+Re-compile simulator with \"-DWITH_TRACE_ANY_P\" to enable this option.\n");
return SIM_RC_FAIL;
-#endif /* !TRACE */
+#endif /* !WITH_TRACE_ANY_P */
case OPTION_DINERO_FILE:
-#if defined(TRACE)
+#if WITH_TRACE_ANY_P
if (optarg != NULL) {
char *tmp;
tmp = (char *)malloc(strlen(optarg) + 1);
sim_io_printf(sd,"Placing trace information into file \"%s\"\n",tracefile);
}
}
-#endif /* TRACE */
+#endif /* WITH_TRACE_ANY_P */
return SIM_RC_OK;
case OPTION_FIRMWARE:
}
return SIM_RC_OK;
}
+
+ case OPTION_INFO_MEMORY:
+ display_mem_info = 1;
+ break;
}
return SIM_RC_OK;
, "Customize simulation for a particular board.", mips_option_handler },
+ /* These next two options have the same names as ones found in the
+ memory_options[] array in common/sim-memopt.c. This is because
+ the intention is to provide an alternative handler for those two
+ options. We need an alternative handler because the memory
+ regions are not set up until after the command line arguments
+ have been parsed, and so we cannot display the memory info whilst
+ processing the command line. There is a hack in sim_open to
+ remove these handlers when we want the real --memory-info option
+ to work. */
+ { { "info-memory", no_argument, NULL, OPTION_INFO_MEMORY },
+ '\0', NULL, "List configured memory regions", mips_option_handler },
+ { { "memory-info", no_argument, NULL, OPTION_INFO_MEMORY },
+ '\0', NULL, NULL, mips_option_handler },
+
{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
};
interrupt_event (SIM_DESC sd, void *data)
{
sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */
- address_word cia = CIA_GET (cpu);
+ address_word cia = CPU_PC_GET (cpu);
if (SR & status_IE)
{
interrupt_pending = 0;
/*-- GDB simulator interface ------------------------------------------------*/
/*---------------------------------------------------------------------------*/
+static sim_cia
+mips_pc_get (sim_cpu *cpu)
+{
+ return PC;
+}
+
+static void
+mips_pc_set (sim_cpu *cpu, sim_cia pc)
+{
+ PC = pc;
+}
+
SIM_DESC
-sim_open (kind, cb, abfd, argv)
- SIM_OPEN_KIND kind;
- host_callback *cb;
- struct bfd *abfd;
- char **argv;
+sim_open (SIM_OPEN_KIND kind, host_callback *cb, struct bfd *abfd, char **argv)
{
+ int i;
SIM_DESC sd = sim_state_alloc (kind, cb);
- sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */
+ sim_cpu *cpu;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
+ /* The cpu data is kept in a separately allocated chunk of memory. */
+ if (sim_cpu_alloc_all (sd, 1, /*cgen_cpu_max_extra_bytes ()*/0) != SIM_RC_OK)
+ return 0;
+
+ cpu = STATE_CPU (sd, 0); /* FIXME */
+
/* FIXME: watchpoints code shouldn't need this */
STATE_WATCHPOINTS (sd)->pc = &(PC);
STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
/* Look for largest memory region defined on command-line at
phys address 0. */
-#ifdef SIM_HAVE_FLATMEM
- mem_size = STATE_MEM_SIZE (sd);
-#endif
for (entry = STATE_MEMOPT (sd); entry != NULL; entry = entry->next)
{
/* If we find an entry at address 0, then we will end up
}
#endif
+ if (display_mem_info)
+ {
+ struct option_list * ol;
+ struct option_list * prev;
+
+ /* This is a hack. We want to execute the real --memory-info command
+ line switch which is handled in common/sim-memopts.c, not the
+ override we have defined in this file. So we remove the
+ mips_options array from the state options list. This is safe
+ because we have now processed all of the command line. */
+ for (ol = STATE_OPTIONS (sd), prev = NULL;
+ ol != NULL;
+ prev = ol, ol = ol->next)
+ if (ol->options == mips_options)
+ break;
+
+ SIM_ASSERT (ol != NULL);
+
+ if (prev == NULL)
+ STATE_OPTIONS (sd) = ol->next;
+ else
+ prev->next = ol->next;
+
+ sim_do_commandf (sd, "memory-info");
+ }
/* check for/establish the a reference program image */
if (sim_analyze_program (sd,
}
-#if defined(TRACE)
if (STATE & simTRACE)
open_trace(sd);
-#endif /* TRACE */
/*
sim_io_eprintf (sd, "idt@%x pmon@%x lsipmon@%x\n",
(((loop >> 2) & RSVD_INSTRUCTION_ARG_MASK)
<< RSVD_INSTRUCTION_ARG_SHIFT));
H2T (insn);
- sim_write (sd, vaddr, (char *)&insn, sizeof (insn));
+ sim_write (sd, vaddr, (unsigned char *)&insn, sizeof (insn));
}
}
if (pmon_monitor_base != 0)
{
address_word vaddr = (pmon_monitor_base + (loop * 4));
- sim_write (sd, vaddr, (char *)&value, sizeof (value));
+ sim_write (sd, vaddr, (unsigned char *)&value, sizeof (value));
}
if (lsipmon_monitor_base != 0)
{
address_word vaddr = (lsipmon_monitor_base + (loop * 4));
- sim_write (sd, vaddr, (char *)&value, sizeof (value));
+ sim_write (sd, vaddr, (unsigned char *)&value, sizeof (value));
}
}
HALT_INSTRUCTION /* BREAK */ };
H2T (halt[0]);
H2T (halt[1]);
- sim_write (sd, 0x80000000, (char *) halt, sizeof (halt));
- sim_write (sd, 0x80000180, (char *) halt, sizeof (halt));
- sim_write (sd, 0x80000200, (char *) halt, sizeof (halt));
+ sim_write (sd, 0x80000000, (unsigned char *) halt, sizeof (halt));
+ sim_write (sd, 0x80000180, (unsigned char *) halt, sizeof (halt));
+ sim_write (sd, 0x80000200, (unsigned char *) halt, sizeof (halt));
/* XXX: Write here unconditionally? */
- sim_write (sd, 0xBFC00200, (char *) halt, sizeof (halt));
- sim_write (sd, 0xBFC00380, (char *) halt, sizeof (halt));
- sim_write (sd, 0xBFC00400, (char *) halt, sizeof (halt));
+ sim_write (sd, 0xBFC00200, (unsigned char *) halt, sizeof (halt));
+ sim_write (sd, 0xBFC00380, (unsigned char *) halt, sizeof (halt));
+ sim_write (sd, 0xBFC00400, (unsigned char *) halt, sizeof (halt));
}
}
+ /* CPU specific initialization. */
+ for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+ {
+ SIM_CPU *cpu = STATE_CPU (sd, i);
+ CPU_PC_FETCH (cpu) = mips_pc_get;
+ CPU_PC_STORE (cpu) = mips_pc_set;
+ }
return sd;
}
-#if defined(TRACE)
+#if WITH_TRACE_ANY_P
static void
-open_trace(sd)
- SIM_DESC sd;
+open_trace (SIM_DESC sd)
{
tracefh = fopen(tracefile,"wb+");
if (tracefh == NULL)
tracefh = stderr;
}
}
-#endif /* TRACE */
+#endif
/* Return name of an insn, used by insn profiling. */
static const char *
}
void
-sim_close (sd, quitting)
- SIM_DESC sd;
- int quitting;
+mips_sim_close (SIM_DESC sd, int quitting)
{
-#ifdef DEBUG
- printf("DBG: sim_close: entered (quitting = %d)\n",quitting);
-#endif
-
-
- /* "quitting" is non-zero if we cannot hang on errors */
-
- /* shut down modules */
- sim_module_uninstall (sd);
-
- /* Ensure that any resources allocated through the callback
- mechanism are released: */
- sim_io_shutdown (sd);
-
-#if defined(TRACE)
+#if WITH_TRACE_ANY_P
if (tracefh != NULL && tracefh != stderr)
fclose(tracefh);
tracefh = NULL;
-#endif /* TRACE */
-
- /* FIXME - free SD */
-
- return;
-}
-
-
-int
-sim_write (sd,addr,buffer,size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- int index;
- sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */
-
- /* Return the number of bytes written, or zero if error. */
-#ifdef DEBUG
- sim_io_printf(sd,"sim_write(0x%s,buffer,%d);\n",pr_addr(addr),size);
#endif
-
- /* We use raw read and write routines, since we do not want to count
- the GDB memory accesses in our statistics gathering. */
-
- for (index = 0; index < size; index++)
- {
- address_word vaddr = (address_word)addr + index;
- address_word paddr;
- int cca;
- if (!address_translation (SD, CPU, NULL_CIA, vaddr, isDATA, isSTORE, &paddr, &cca, isRAW))
- break;
- if (sim_core_write_buffer (SD, CPU, read_map, buffer + index, paddr, 1) != 1)
- break;
- }
-
- return(index);
-}
-
-int
-sim_read (sd,addr,buffer,size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- int index;
- sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */
-
- /* Return the number of bytes read, or zero if error. */
-#ifdef DEBUG
- sim_io_printf(sd,"sim_read(0x%s,buffer,%d);\n",pr_addr(addr),size);
-#endif /* DEBUG */
-
- for (index = 0; (index < size); index++)
- {
- address_word vaddr = (address_word)addr + index;
- address_word paddr;
- int cca;
- if (!address_translation (SD, CPU, NULL_CIA, vaddr, isDATA, isLOAD, &paddr, &cca, isRAW))
- break;
- if (sim_core_read_buffer (SD, CPU, read_map, buffer + index, paddr, 1) != 1)
- break;
- }
-
- return(index);
}
int
-sim_store_register (sd,rn,memory,length)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
- int length;
+sim_store_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
{
sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */
/* NOTE: gdb (the client) stores registers in target byte order
}
int
-sim_fetch_register (sd,rn,memory,length)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
- int length;
+sim_fetch_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
{
sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */
/* NOTE: gdb (the client) stores registers in target byte order
return 0;
}
-
SIM_RC
-sim_create_inferior (sd, abfd, argv,env)
- SIM_DESC sd;
- struct bfd *abfd;
- char **argv;
- char **env;
+sim_create_inferior (SIM_DESC sd, struct bfd *abfd, char **argv, char **env)
{
#ifdef DEBUG
for (cpu_nr = 0; cpu_nr < sim_engine_nr_cpus (sd); cpu_nr++)
{
sim_cpu *cpu = STATE_CPU (sd, cpu_nr);
- CIA_SET (cpu, (unsigned64) bfd_get_start_address (abfd));
+ CPU_PC_SET (cpu, (unsigned64) bfd_get_start_address (abfd));
}
}
return SIM_RC_OK;
}
-void
-sim_do_command (sd,cmd)
- SIM_DESC sd;
- char *cmd;
-{
- if (sim_args_command (sd, cmd) != SIM_RC_OK)
- sim_io_printf (sd, "Error: \"%s\" is not a valid MIPS simulator command.\n",
- cmd);
-}
-
/*---------------------------------------------------------------------------*/
/*-- Private simulator support interface ------------------------------------*/
/*---------------------------------------------------------------------------*/
{
char *buf;
int nr = 0;
- char null;
+ unsigned char null;
while (sim_read (sd, addr + nr, &null, 1) == 1 && null != 0)
nr++;
buf = NZALLOC (char, nr + 1);
- sim_read (sd, addr, buf, nr);
+ sim_read (sd, addr, (unsigned char *)buf, nr);
return buf;
}
{
char *path = fetch_str (sd, A0);
V0 = sim_io_open (sd, path, (int)A1);
- zfree (path);
+ free (path);
break;
}
int nr = A2;
char *buf = zalloc (nr);
V0 = sim_io_read (sd, fd, buf, nr);
- sim_write (sd, A1, buf, nr);
- zfree (buf);
+ sim_write (sd, A1, (unsigned char *)buf, nr);
+ free (buf);
}
break;
int fd = A0;
int nr = A2;
char *buf = zalloc (nr);
- sim_read (sd, A1, buf, nr);
+ sim_read (sd, A1, (unsigned char *)buf, nr);
V0 = sim_io_write (sd, fd, buf, nr);
- zfree (buf);
+ if (fd == 1)
+ sim_io_flush_stdout (sd);
+ else if (fd == 2)
+ sim_io_flush_stderr (sd);
+ free (buf);
break;
}
value = mem_size;
H2T (value);
- sim_write (sd, A0 + 0, (char *)&value, 4);
- sim_write (sd, A0 + 4, (char *)&zero, 4);
- sim_write (sd, A0 + 8, (char *)&zero, 4);
+ sim_write (sd, A0 + 0, (unsigned char *)&value, 4);
+ sim_write (sd, A0 + 4, (unsigned char *)&zero, 4);
+ sim_write (sd, A0 + 8, (unsigned char *)&zero, 4);
/* sim_io_eprintf (sd, "sim: get_mem_info() deprecated\n"); */
break;
}
/* The following is based on the PMON printf source */
{
address_word s = A0;
- char c;
+ unsigned char c;
signed_word *ap = &A1; /* 1st argument */
/* This isn't the quickest way, since we call the host print
routine for every character almost. But it does avoid
if ((int)*ap != 0)
{
address_word p = *ap++;
- char ch;
+ unsigned char ch;
while (sim_read (sd, p++, &ch, 1) == 1 && ch != '\0')
sim_io_printf(sd, "%c", ch);
}
uword64 vaddr,
signed_word val)
{
- address_word paddr;
- int uncached;
+ address_word paddr = vaddr;
if ((vaddr & 3) != 0)
SignalExceptionAddressStore ();
else
{
- if (AddressTranslation (vaddr, isDATA, isSTORE, &paddr, &uncached,
- isTARGET, isREAL))
- {
- const uword64 mask = 7;
- uword64 memval;
- unsigned int byte;
-
- paddr = (paddr & ~mask) | ((paddr & mask) ^ (ReverseEndian << 2));
- byte = (vaddr & mask) ^ (BigEndianCPU << 2);
- memval = ((uword64) val) << (8 * byte);
- StoreMemory (uncached, AccessLength_WORD, memval, 0, paddr, vaddr,
- isREAL);
- }
+ const uword64 mask = 7;
+ uword64 memval;
+ unsigned int byte;
+
+ paddr = (paddr & ~mask) | ((paddr & mask) ^ (ReverseEndian << 2));
+ byte = (vaddr & mask) ^ (BigEndianCPU << 2);
+ memval = ((uword64) val) << (8 * byte);
+ StoreMemory (AccessLength_WORD, memval, 0, paddr, vaddr,
+ isREAL);
}
}
}
else
{
- address_word paddr;
- int uncached;
-
- if (AddressTranslation (vaddr, isDATA, isLOAD, &paddr, &uncached,
- isTARGET, isREAL))
- {
- const uword64 mask = 0x7;
- const unsigned int reverse = ReverseEndian ? 1 : 0;
- const unsigned int bigend = BigEndianCPU ? 1 : 0;
- uword64 memval;
- unsigned int byte;
-
- paddr = (paddr & ~mask) | ((paddr & mask) ^ (reverse << 2));
- LoadMemory (&memval,NULL,uncached, AccessLength_WORD, paddr, vaddr,
- isDATA, isREAL);
- byte = (vaddr & mask) ^ (bigend << 2);
- return EXTEND32 (memval >> (8 * byte));
- }
+ address_word paddr = vaddr;
+ const uword64 mask = 0x7;
+ const unsigned int reverse = ReverseEndian ? 1 : 0;
+ const unsigned int bigend = BigEndianCPU ? 1 : 0;
+ uword64 memval;
+ unsigned int byte;
+
+ paddr = (paddr & ~mask) | ((paddr & mask) ^ (reverse << 2));
+ LoadMemory (&memval, NULL, AccessLength_WORD, paddr, vaddr, isDATA,
+ isREAL);
+ byte = (vaddr & mask) ^ (bigend << 2);
+ return EXTEND32 (memval >> (8 * byte));
}
return 0;
/*-- trace support ----------------------------------------------------------*/
-/* The TRACE support is provided (if required) in the memory accessing
+/* The trace support is provided (if required) in the memory accessing
routines. Since we are also providing the architecture specific
features, the architecture simulation code can also deal with
- notifying the TRACE world of cache flushes, etc. Similarly we do
+ notifying the trace world of cache flushes, etc. Similarly we do
not need to provide profiling support in the simulator engine,
since we can sample in the instruction fetch control loop. By
- defining the TRACE manifest, we add tracing as a run-time
+ defining the trace manifest, we add tracing as a run-time
option. */
-#if defined(TRACE)
+#if WITH_TRACE_ANY_P
/* Tracing by default produces "din" format (as required by
dineroIII). Each line of such a trace file *MUST* have a din label
and address field. The rest of the line is ignored, so comments can
return;
}
-#endif /* TRACE */
+#endif /* WITH_TRACE_ANY_P */
/*---------------------------------------------------------------------------*/
/*-- simulator engine -------------------------------------------------------*/
FPR_STATE[rn] = fmt_uninterpreted;
}
+ /* Initialise the Config0 register. */
+ C0_CONFIG = 0x80000000 /* Config1 present */
+ | 2; /* KSEG0 uncached */
+ if (WITH_TARGET_WORD_BITSIZE == 64)
+ {
+ /* FIXME Currently mips/sim-main.c:address_translation()
+ truncates all addresses to 32-bits. */
+ if (0 && WITH_TARGET_ADDRESS_BITSIZE == 64)
+ C0_CONFIG |= (2 << 13); /* MIPS64, 64-bit addresses */
+ else
+ C0_CONFIG |= (1 << 13); /* MIPS64, 32-bit addresses */
+ }
+ if (BigEndianMem)
+ C0_CONFIG |= 0x00008000; /* Big Endian */
}
}
decode_coproc (SIM_DESC sd,
sim_cpu *cpu,
address_word cia,
- unsigned int instruction)
+ unsigned int instruction,
+ int coprocnum,
+ CP0_operation op,
+ int rt,
+ int rd,
+ int sel)
{
- int coprocnum = ((instruction >> 26) & 3);
-
switch (coprocnum)
{
case 0: /* standard CPU control and cache registers */
{
- int code = ((instruction >> 21) & 0x1F);
- int rt = ((instruction >> 16) & 0x1F);
- int rd = ((instruction >> 11) & 0x1F);
- int tail = instruction & 0x3ff;
/* R4000 Users Manual (second edition) lists the following CP0
instructions:
CODE><-RT><RD-><--TAIL--->
CACHE Cache operation (VR4100 = 101111bbbbbpppppiiiiiiiiiiiiiiii)
ERET Exception return (VR4100 = 01000010000000000000000000011000)
*/
- if (((code == 0x00) || (code == 0x04) /* MFC0 / MTC0 */
- || (code == 0x01) || (code == 0x05)) /* DMFC0 / DMTC0 */
- && tail == 0)
+ if (((op == cp0_mfc0) || (op == cp0_mtc0) /* MFC0 / MTC0 */
+ || (op == cp0_dmfc0) || (op == cp0_dmtc0)) /* DMFC0 / DMTC0 */
+ && sel == 0)
{
- /* Clear double/single coprocessor move bit. */
- code &= ~1;
-
- /* M[TF]C0 (32 bits) | DM[TF]C0 (64 bits) */
-
switch (rd) /* NOTEs: Standard CP0 registers */
{
/* 0 = Index R4000 VR4100 VR4300 */
case 8:
/* 8 = BadVAddr R4000 VR4100 VR4300 */
- if (code == 0x00)
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
GPR[rt] = (signed_word) (signed_address) COP0_BADVADDR;
else
COP0_BADVADDR = GPR[rt];
#endif /* SUBTARGET_R3900 */
case 12:
- if (code == 0x00)
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
GPR[rt] = SR;
else
SR = GPR[rt];
break;
/* 13 = Cause R4000 VR4100 VR4300 */
case 13:
- if (code == 0x00)
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
GPR[rt] = CAUSE;
else
CAUSE = GPR[rt];
break;
/* 14 = EPC R4000 VR4100 VR4300 */
case 14:
- if (code == 0x00)
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
GPR[rt] = (signed_word) (signed_address) EPC;
else
EPC = GPR[rt];
#ifdef SUBTARGET_R3900
/* 16 = Debug */
case 16:
- if (code == 0x00)
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
GPR[rt] = Debug;
else
Debug = GPR[rt];
#else
/* 16 = Config R4000 VR4100 VR4300 */
case 16:
- if (code == 0x00)
- GPR[rt] = C0_CONFIG;
- else
- C0_CONFIG = GPR[rt];
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
+ GPR[rt] = C0_CONFIG;
+ else
+ /* only bottom three bits are writable */
+ C0_CONFIG = (C0_CONFIG & ~0x7) | (GPR[rt] & 0x7);
break;
#endif
#ifdef SUBTARGET_R3900
/* 17 = Debug */
case 17:
- if (code == 0x00)
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
GPR[rt] = DEPC;
else
DEPC = GPR[rt];
GPR[rt] = 0xDEADC0DE; /* CPR[0,rd] */
/* CPR[0,rd] = GPR[rt]; */
default:
- if (code == 0x00)
+ if (op == cp0_mfc0 || op == cp0_dmfc0)
GPR[rt] = (signed_word) (signed32) COP0_GPR[rd];
else
COP0_GPR[rd] = GPR[rt];
#endif
}
}
- else if (code == 0x10 && (tail & 0x3f) == 0x18)
+ else if ((op == cp0_mfc0 || op == cp0_dmfc0)
+ && rd == 16)
+ {
+ /* [D]MFC0 RT,C0_CONFIG,SEL */
+ signed32 cfg = 0;
+ switch (sel)
+ {
+ case 0:
+ cfg = C0_CONFIG;
+ break;
+ case 1:
+ /* MIPS32 r/o Config1:
+ Config2 present */
+ cfg = 0x80000000;
+ /* MIPS16 implemented.
+ XXX How to check configuration? */
+ cfg |= 0x0000004;
+ if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT)
+ /* MDMX & FPU implemented */
+ cfg |= 0x00000021;
+ break;
+ case 2:
+ /* MIPS32 r/o Config2:
+ Config3 present. */
+ cfg = 0x80000000;
+ break;
+ case 3:
+ /* MIPS32 r/o Config3:
+ SmartMIPS implemented. */
+ cfg = 0x00000002;
+ break;
+ }
+ GPR[rt] = cfg;
+ }
+ else if (op == cp0_eret && sel == 0x18)
{
/* ERET */
if (SR & status_ERL)
SR &= ~status_EXL;
}
}
- else if (code == 0x10 && (tail & 0x3f) == 0x10)
+ else if (op == cp0_rfe && sel == 0x10)
{
/* RFE */
#ifdef SUBTARGET_R3900
/* TODO: CACHE register */
#endif /* SUBTARGET_R3900 */
}
- else if (code == 0x10 && (tail & 0x3f) == 0x1F)
+ else if (op == cp0_deret && sel == 0x1F)
{
/* DERET */
Debug &= ~Debug_DM;
static int thirty_two = 32;
char*
-pr_addr(addr)
- SIM_ADDR addr;
+pr_addr (SIM_ADDR addr)
{
char *paddr_str=get_cell();
switch (sizeof(addr))
}
char*
-pr_uword64(addr)
- uword64 addr;
+pr_uword64 (uword64 addr)
{
char *paddr_str=get_cell();
sprintf(paddr_str,"%08lx%08lx",
projects / deliverable / binutils-gdb.git / blobdiff