From cd6245ce7034b1a26aedee8ef1a8ad29fcd0dce4 Mon Sep 17 00:00:00 2001 From: Doug Evans Date: Tue, 2 Feb 1999 19:38:43 +0000 Subject: sparc cgen port --- sim/sparc/sim-if.c | 245 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 245 insertions(+) create mode 100644 sim/sparc/sim-if.c (limited to 'sim/sparc/sim-if.c') diff --git a/sim/sparc/sim-if.c b/sim/sparc/sim-if.c new file mode 100644 index 0000000..6d44075 --- /dev/null +++ b/sim/sparc/sim-if.c @@ -0,0 +1,245 @@ +/* Main simulator entry points for the SPARC. + Copyright (C) 1999 Cygnus Solutions. */ + +#include "sim-main.h" +#include +#ifdef HAVE_STDLIB_H +#include +#endif +#include "libiberty.h" +#include "bfd.h" +#include "sim-core.h" +#include "dev32.h" + +/* FIXME: Do we *need* to pass state to the semantic routines? */ +SIM_DESC current_state; + +static MODULE_SUSPEND_FN regwin_suspend; + +/* Cover function of sim_state_free to free the cpu buffers as well. */ + +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); +} + +/* Create an instance of the simulator. */ + +SIM_DESC +sim_open (kind, callback, abfd, argv) + SIM_OPEN_KIND kind; + host_callback *callback; + struct _bfd *abfd; + char **argv; +{ + char c; + int i; + SIM_DESC sd = sim_state_alloc (kind, callback); + + /* The cpu data is kept in a separately allocated chunk of memory. */ + if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + +#if 0 /* FIXME: 'twould be nice if we could do this */ + /* These options override any module options. + Obviously ambiguity should be avoided, however the caller may wish to + augment the meaning of an option. */ + if (extra_options != NULL) + sim_add_option_table (sd, extra_options); +#endif + + /* Make the default --environment=operating to be compatible with erc32. */ + STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT; + + /* 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; + } + + /* Establish any remaining configuration options. */ + if (sim_config (sd) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + if (sim_post_argv_init (sd) != SIM_RC_OK) + { + free_state (sd); + return 0; + } + + /* Initialize various cgen things not done by common framework. */ + cgen_init (sd); + + /* Open a copy of the opcode table. */ + STATE_OPCODE_TABLE (sd) = sparc_cgen_opcode_open (STATE_ARCHITECTURE (sd)->mach, + CGEN_ENDIAN_BIG); + sparc_cgen_init_dis (STATE_OPCODE_TABLE (sd)); + + /* Allocate a handler for the control registers and other devices + if no memory for that range has been allocated by the user. + All are allocated in one chunk to keep things from being + unnecessarily complicated. */ + if (sim_core_read_buffer (sd, NULL, read_map, &c, ERC32_DEVICE_ADDR, 1) == 0) + sim_core_attach (sd, NULL, + 0 /*level*/, + access_read_write, + 0 /*space ???*/, + ERC32_DEVICE_ADDR, ERC32_DEVICE_LEN /*nr_bytes*/, + 0 /*modulo*/, + &sparc_devices, + NULL /*buffer*/); + + /* Allocate core managed memory if none specified by user. */ + /* Use address 4 here in case the user wanted address 0 unmapped. */ + if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0) + sim_do_commandf (sd, "memory region 0,0x%x", SPARC_DEFAULT_MEM_SIZE); + /* FIXME: magic number */ + if (sim_core_read_buffer (sd, NULL, read_map, &c, 0x2000000, 1) == 0) + sim_do_commandf (sd, "memory region 0x%x,0x%x", 0x2000000, 0x200000); + +#ifdef HAVE_SPARC32 + if (! ARCH64_P (sd)) + { + sparc32_alloc_regwins (STATE_CPU (sd, 0), NWINDOWS); + } +#endif +#ifdef HAVE_SPARC64 + if (ARCH64_P (sd)) + { + sparc64_alloc_regwins (STATE_CPU (sd, 0), NWINDOWS); + } +#endif + + sim_module_add_suspend_fn (sd, regwin_suspend); + + /* Perform a cold-reset of the cpu(s). */ + + for (i = 0; i < MAX_NR_PROCESSORS; ++i) + sparc32_cold_reset (STATE_CPU (sd, i), 0); + + /* Store in a global so things like sparc32_dump_regs can be invoked + from the gdb command line. */ + current_state = sd; + + return sd; +} + +void +sim_close (sd, quitting) + SIM_DESC sd; + int quitting; +{ +#ifdef HAVE_SPARC32 + if (! ARCH64_P (sd)) + sparc32_free_regwins (STATE_CPU (sd, 0)); +#endif +#ifdef HAVE_SPARC64 + if (ARCH64_P (sd)) + sparc64_free_regwins (STATE_CPU (sd, 0)); +#endif + sim_module_uninstall (sd); +} + +SIM_RC +sim_create_inferior (sd, abfd, argv, envp) + SIM_DESC sd; + struct _bfd *abfd; + char **argv; + char **envp; +{ + SIM_ADDR addr; + + if (abfd) + addr = bfd_get_start_address (abfd); + else + addr = 0; + +#if 0 + STATE_ARGV (sd) = sim_copy_argv (argv); + STATE_ENVP (sd) = sim_copy_argv (envp); +#endif + +#ifdef HAVE_SPARC32 + if (! ARCH64_P (sd)) + { + sparc32_cold_reset (STATE_CPU (sd, 0), 1); + sparc32_init_pc (STATE_CPU (sd, 0), addr, addr + 4); + } +#endif +#ifdef HAVE_SPARC64 + if (ARCH64_P (sd)) + { + sparc64_cold_reset (STATE_CPU (sd, 0), 1); + sparc64_init_pc (STATE_CPU (sd, 0), addr, addr + 4); + } +#endif + + return SIM_RC_OK; +} + +/* Flush the register windows when we suspend so we can walk the stack + in gdb. + ??? Extremely inefficient in case where gdb is running a program + by stepping it. + ??? Also interferes with debugging of --environment=operating. */ + +static SIM_RC +regwin_suspend (SIM_DESC sd) +{ + int c; + + for (c = 0; c < MAX_NR_PROCESSORS; ++c) + { + SIM_CPU *cpu = STATE_CPU (sd, c); + +#ifdef HAVE_SPARC32 + if (ARCH32_P (cpu)) + sparc32_flush_regwins (cpu, sim_pc_get (cpu), 1 /* no errors */); +#endif +#ifdef HAVE_SPARC64 + if (ARCH64_P (cpu)) + sparc64_flush_regwins (cpu, sim_pc_get (cpu), 1 /* no errors */); +#endif + } + + 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_eprintf (sd, "Unknown command `%s'\n", cmd); +} -- cgit v1.1