diff options
Diffstat (limited to 'sim/mcore/interp.c')
| -rw-r--r-- | sim/mcore/interp.c | 207 |
1 files changed, 95 insertions, 112 deletions
diff --git a/sim/mcore/interp.c b/sim/mcore/interp.c index b06bd1fb3f7..93856d41572 100644 --- a/sim/mcore/interp.c +++ b/sim/mcore/interp.c @@ -29,16 +29,15 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "libiberty.h" #include "gdb/remote-sim.h" +#include "sim-main.h" +#include "sim-base.h" +#include "sim-options.h" + #ifndef NUM_ELEM #define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0]) #endif - -typedef long int word; -typedef unsigned long int uword; - -static int target_big_endian = 0; -host_callback * callback; +#define target_big_endian (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) static unsigned long @@ -104,6 +103,7 @@ mcore_store_unsigned_integer (unsigned char *addr, int len, unsigned long val) read/write functions. Keeping this data in native order improves the performance of the simulator. Simulation speed is deemed more important. */ +/* TODO: Should be moved to sim-main.h:sim_cpu. */ /* The ordering of the mcore_regset structure is matched in the gdb/config/mcore/tm-mcore.h file in the REGISTER_NAMES macro. */ @@ -112,7 +112,6 @@ struct mcore_regset word gregs [16]; /* primary registers */ word alt_gregs [16]; /* alt register file */ word cregs [32]; /* control registers */ - word pc; /* the pc */ int ticks; int stalls; int cycles; @@ -132,10 +131,7 @@ union #define LAST_VALID_CREG 32 /* only 0..12 implemented */ #define NUM_MCORE_REGS (16 + 16 + LAST_VALID_CREG + 1) -int memcycles = 1; - -static SIM_OPEN_KIND sim_kind; -static char * myname; +static int memcycles = 1; static int issue_messages = 0; @@ -352,10 +348,11 @@ rhat (word x) /* Default to a 8 Mbyte (== 2^23) memory space. */ +/* TODO: Delete all this custom memory logic and move to common sim helpers. */ static int sim_memory_size = 23; #define MEM_SIZE_FLOOR 64 -void +static void sim_size (int power) { sim_memory_size = power; @@ -391,7 +388,7 @@ init_pointers (void) } static void -set_initial_gprs (void) +set_initial_gprs (SIM_CPU *scpu) { int i; long space; @@ -400,7 +397,7 @@ set_initial_gprs (void) init_pointers (); /* Set up machine just out of reset. */ - cpu.asregs.pc = 0; + CIA_SET (scpu, 0); cpu.sr = 0; memsize = cpu.asregs.msize / (1024 * 1024); @@ -468,9 +465,10 @@ is_opened (int fd) } static void -handle_trap1 (void) +handle_trap1 (SIM_DESC sd) { unsigned long a[3]; + host_callback *callback = STATE_CALLBACK (sd); switch ((unsigned long) (cpu.gr [TRAPCODE])) { @@ -587,7 +585,7 @@ handle_trap1 (void) } static void -process_stub (int what) +process_stub (SIM_DESC sd, int what) { /* These values should match those in libgloss/mcore/syscalls.s. */ switch (what) @@ -600,7 +598,7 @@ process_stub (int what) case 19: /* _lseek */ case 43: /* _times */ cpu.gr [TRAPCODE] = what; - handle_trap1 (); + handle_trap1 (sd); break; default: @@ -611,7 +609,7 @@ process_stub (int what) } static void -util (unsigned what) +util (SIM_DESC sd, unsigned what) { switch (what) { @@ -653,7 +651,7 @@ util (unsigned what) break; case 0xFF: - process_stub (cpu.gr[1]); + process_stub (sd, cpu.gr[1]); break; default: @@ -705,6 +703,7 @@ static int tracing = 0; void sim_resume (SIM_DESC sd, int step, int siggnal) { + SIM_CPU *scpu = STATE_CPU (sd, 0); int needfetch; word ibuf; word pc; @@ -717,7 +716,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal) word WLhash; cpu.asregs.exception = step ? SIGTRAP: 0; - pc = cpu.asregs.pc; + pc = CIA_GET (scpu); /* Fetch the initial instructions that we'll decode. */ ibuf = rlat (pc & 0xFFFFFFFC); @@ -895,7 +894,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal) break; case 0x9: /* trap 1 */ - handle_trap1 (); + handle_trap1 (sd); break; } break; @@ -1492,7 +1491,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal) cpu.asregs.exception = SIGILL; break; case 0x50: - util (inst & 0xFF); + util (sd, inst & 0xFF); break; case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: @@ -1649,7 +1648,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal) while (!cpu.asregs.exception); /* Hide away the things we've cached while executing. */ - cpu.asregs.pc = pc; + CIA_SET (scpu, pc); cpu.asregs.insts += insts; /* instructions done ... */ cpu.asregs.cycles += insts; /* and each takes a cycle */ cpu.asregs.cycles += bonus_cycles; /* and extra cycles for branches */ @@ -1723,19 +1722,6 @@ sim_fetch_register (SIM_DESC sd, int rn, unsigned char *memory, int length) return 0; } - -int -sim_trace (SIM_DESC sd) -{ - tracing = 1; - - sim_resume (sd, 0, 0); - - tracing = 0; - - return 1; -} - void sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) { @@ -1751,15 +1737,6 @@ sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) } } - -int -sim_stop (SIM_DESC sd) -{ - cpu.asregs.exception = SIGINT; - return 1; -} - - void sim_info (SIM_DESC sd, int verbose) { @@ -1767,6 +1744,7 @@ sim_info (SIM_DESC sd, int verbose) int w, wcyc; #endif double virttime = cpu.asregs.cycles / 36.0e6; + host_callback *callback = STATE_CALLBACK (sd); callback->printf_filtered (callback, "\n\n# instructions executed %10d\n", cpu.asregs.insts); @@ -1817,12 +1795,71 @@ struct aout #define LONG(x) (((x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3]) #define SHORT(x) (((x)[0]<<8)|(x)[1]) +static void +free_state (SIM_DESC sd) +{ + if (STATE_MODULES (sd) != NULL) + sim_module_uninstall (sd); + sim_cpu_free_all (sd); + sim_state_free (sd); +} + SIM_DESC sim_open (SIM_OPEN_KIND kind, host_callback *cb, struct bfd *abfd, char **argv) { - int osize = sim_memory_size; - myname = argv[0]; - callback = cb; + SIM_DESC sd = sim_state_alloc (kind, cb); + int i, osize; + 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) + { + free_state (sd); + return 0; + } + + if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + /* getopt will print the error message so we just have to exit if this fails. + FIXME: Hmmm... in the case of gdb we need getopt to call + print_filtered. */ + if (sim_parse_args (sd, argv) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + /* Check for/establish the a reference program image. */ + if (sim_analyze_program (sd, + (STATE_PROG_ARGV (sd) != NULL + ? *STATE_PROG_ARGV (sd) + : NULL), abfd) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + /* Configure/verify the target byte order and other runtime + configuration options. */ + if (sim_config (sd) != SIM_RC_OK) + { + sim_module_uninstall (sd); + return 0; + } + + if (sim_post_argv_init (sd) != SIM_RC_OK) + { + /* Uninstall the modules to avoid memory leaks, + file descriptor leaks, etc. */ + sim_module_uninstall (sd); + return 0; + } + + osize = sim_memory_size; if (kind == SIM_OPEN_STANDALONE) issue_messages = 1; @@ -1831,10 +1868,14 @@ sim_open (SIM_OPEN_KIND kind, host_callback *cb, struct bfd *abfd, char **argv) sim_size (1); /* small */ sim_size (osize); /* and back again */ - set_initial_gprs (); /* Reset the GPR registers. */ + /* CPU specific initialization. */ + for (i = 0; i < MAX_NR_PROCESSORS; ++i) + { + SIM_CPU *cpu = STATE_CPU (sd, i); + set_initial_gprs (cpu); /* Reset the GPR registers. */ + } - /* Fudge our descriptor for now. */ - return (SIM_DESC) 1; + return sd; } void @@ -1844,61 +1885,9 @@ sim_close (SIM_DESC sd, int quitting) } SIM_RC -sim_load (SIM_DESC sd, const char *prog, bfd *abfd, int from_tty) -{ - /* Do the right thing for ELF executables; this turns out to be - just about the right thing for any object format that: - - we crack using BFD routines - - follows the traditional UNIX text/data/bss layout - - calls the bss section ".bss". */ - - extern bfd * sim_load_file (); /* ??? Don't know where this should live. */ - bfd * prog_bfd; - - { - bfd * handle; - handle = bfd_openr (prog, 0); /* could be "mcore" */ - - if (!handle) - { - printf("``%s'' could not be opened.\n", prog); - return SIM_RC_FAIL; - } - - /* Makes sure that we have an object file, also cleans gets the - section headers in place. */ - if (!bfd_check_format (handle, bfd_object)) - { - /* wasn't an object file */ - bfd_close (handle); - printf ("``%s'' is not appropriate object file.\n", prog); - return SIM_RC_FAIL; - } - - /* Clean up after ourselves. */ - bfd_close (handle); - - /* XXX: do we need to free the s_bss and handle structures? */ - } - - /* from sh -- dac */ - prog_bfd = sim_load_file (sd, myname, callback, prog, abfd, - sim_kind == SIM_OPEN_DEBUG, - 0, sim_write); - if (prog_bfd == NULL) - return SIM_RC_FAIL; - - target_big_endian = bfd_big_endian (prog_bfd); - - if (abfd == NULL) - bfd_close (prog_bfd); - - return SIM_RC_OK; -} - -SIM_RC sim_create_inferior (SIM_DESC sd, struct bfd *prog_bfd, char **argv, char **env) { + SIM_CPU *scpu = STATE_CPU (sd, 0); char ** avp; int nargs = 0; int nenv = 0; @@ -1912,11 +1901,11 @@ sim_create_inferior (SIM_DESC sd, struct bfd *prog_bfd, char **argv, char **env) /* Set the initial register set. */ l = issue_messages; issue_messages = 0; - set_initial_gprs (); + set_initial_gprs (scpu); issue_messages = l; hi_stack = cpu.asregs.msize - 4; - cpu.asregs.pc = bfd_get_start_address (prog_bfd); + CIA_SET (scpu, bfd_get_start_address (prog_bfd)); /* Calculate the argument and environment strings. */ s_length = 0; @@ -2085,9 +2074,3 @@ sim_do_command (SIM_DESC sd, const char *cmd) fprintf (stderr, " verbose\n"); } } - -void -sim_set_callbacks (host_callback *ptr) -{ - callback = ptr; -} |