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Diffstat (limited to 'sim/arm/wrapper.c')
| -rw-r--r-- | sim/arm/wrapper.c | 745 |
1 files changed, 0 insertions, 745 deletions
diff --git a/sim/arm/wrapper.c b/sim/arm/wrapper.c deleted file mode 100644 index c8361ba..0000000 --- a/sim/arm/wrapper.c +++ /dev/null @@ -1,745 +0,0 @@ -/* run front end support for arm - Copyright (C) 1995, 1996, 1997, 2000, 2001, 2002 - Free Software Foundation, Inc. - - This file is part of ARM SIM. - - GCC 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, or (at your - option) any later version. - - GCC 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* This file provides the interface between the simulator and - run.c and gdb (when the simulator is linked with gdb). - All simulator interaction should go through this file. */ - -#include <stdio.h> -#include <stdarg.h> -#include <string.h> -#include <bfd.h> -#include <signal.h> -#include "gdb/callback.h" -#include "gdb/remote-sim.h" -#include "armdefs.h" -#include "armemu.h" -#include "dbg_rdi.h" -#include "ansidecl.h" -#include "sim-utils.h" -#include "run-sim.h" -#include "gdb/sim-arm.h" - -host_callback *sim_callback; - -static struct ARMul_State *state; - -/* Who is using the simulator. */ -static SIM_OPEN_KIND sim_kind; - -/* argv[0] */ -static char *myname; - -/* Memory size in bytes. */ -static int mem_size = (1 << 23); - -/* Non-zero to display start up banner, and maybe other things. */ -static int verbosity; - -/* Non-zero to set big endian mode. */ -static int big_endian; - -int stop_simulator; - -static void -init () -{ - static int done; - - if (!done) - { - ARMul_EmulateInit (); - state = ARMul_NewState (); - state->bigendSig = (big_endian ? HIGH : LOW); - ARMul_MemoryInit (state, mem_size); - ARMul_OSInit (state); - ARMul_CoProInit (state); - state->verbose = verbosity; - done = 1; - } -} - -/* Set verbosity level of simulator. - This is not intended to produce detailed tracing or debugging information. - Just summaries. */ -/* FIXME: common/run.c doesn't do this yet. */ - -void -sim_set_verbose (v) - int v; -{ - verbosity = v; -} - -/* Set the memory size to SIZE bytes. - Must be called before initializing simulator. */ -/* FIXME: Rename to sim_set_mem_size. */ - -void -sim_size (size) - int size; -{ - mem_size = size; -} - -void -ARMul_ConsolePrint VPARAMS ((ARMul_State * state, - const char * format, - ...)) -{ - va_list ap; - - if (state->verbose) - { - va_start (ap, format); - vprintf (format, ap); - va_end (ap); - } -} - -ARMword -ARMul_Debug (state, pc, instr) - ARMul_State * state ATTRIBUTE_UNUSED; - ARMword pc ATTRIBUTE_UNUSED; - ARMword instr ATTRIBUTE_UNUSED; -{ - return 0; -} - -int -sim_write (sd, addr, buffer, size) - SIM_DESC sd ATTRIBUTE_UNUSED; - SIM_ADDR addr; - unsigned char * buffer; - int size; -{ - int i; - - init (); - - for (i = 0; i < size; i++) - ARMul_SafeWriteByte (state, addr + i, buffer[i]); - - return size; -} - -int -sim_read (sd, addr, buffer, size) - SIM_DESC sd ATTRIBUTE_UNUSED; - SIM_ADDR addr; - unsigned char * buffer; - int size; -{ - int i; - - init (); - - for (i = 0; i < size; i++) - buffer[i] = ARMul_SafeReadByte (state, addr + i); - - return size; -} - -int -sim_trace (sd) - SIM_DESC sd ATTRIBUTE_UNUSED; -{ - (*sim_callback->printf_filtered) - (sim_callback, - "This simulator does not support tracing\n"); - return 1; -} - -int -sim_stop (sd) - SIM_DESC sd ATTRIBUTE_UNUSED; -{ - state->Emulate = STOP; - stop_simulator = 1; - return 1; -} - -void -sim_resume (sd, step, siggnal) - SIM_DESC sd ATTRIBUTE_UNUSED; - int step; - int siggnal ATTRIBUTE_UNUSED; -{ - state->EndCondition = 0; - stop_simulator = 0; - - if (step) - { - state->Reg[15] = ARMul_DoInstr (state); - if (state->EndCondition == 0) - state->EndCondition = RDIError_BreakpointReached; - } - else - { - state->NextInstr = RESUME; /* treat as PC change */ - state->Reg[15] = ARMul_DoProg (state); - } - - FLUSHPIPE; -} - -SIM_RC -sim_create_inferior (sd, abfd, argv, env) - SIM_DESC sd ATTRIBUTE_UNUSED; - struct _bfd * abfd; - char ** argv; - char ** env; -{ - int argvlen = 0; - int mach; - char **arg; - - if (abfd != NULL) - ARMul_SetPC (state, bfd_get_start_address (abfd)); - else - ARMul_SetPC (state, 0); /* ??? */ - - mach = bfd_get_mach (abfd); - - switch (mach) - { - default: - (*sim_callback->printf_filtered) - (sim_callback, - "Unknown machine type '%d'; please update sim_create_inferior.\n", - mach); - /* fall through */ - - case 0: - /* We wouldn't set the machine type with earlier toolchains, so we - explicitly select a processor capable of supporting all ARMs in - 32bit mode. */ - case bfd_mach_arm_XScale: - ARMul_SelectProcessor (state, ARM_v5_Prop | ARM_v5e_Prop | ARM_XScale_Prop); - break; - - case bfd_mach_arm_5: - if (bfd_family_coff (abfd)) - { - /* This is a special case in order to support COFF based ARM toolchains. - The COFF header does not have enough room to store all the different - kinds of ARM cpu, so the XScale, v5T and v5TE architectures all default - to v5. (See coff_set_flags() in bdf/coffcode.h). So if we see a v5 - machine type here, we assume it could be any of the above architectures - and so select the most feature-full. */ - ARMul_SelectProcessor (state, ARM_v5_Prop | ARM_v5e_Prop | ARM_XScale_Prop); - break; - } - /* Otherwise drop through. */ - - case bfd_mach_arm_5T: - ARMul_SelectProcessor (state, ARM_v5_Prop); - break; - - case bfd_mach_arm_5TE: - ARMul_SelectProcessor (state, ARM_v5_Prop | ARM_v5e_Prop); - break; - - case bfd_mach_arm_4: - case bfd_mach_arm_4T: - ARMul_SelectProcessor (state, ARM_v4_Prop); - break; - - case bfd_mach_arm_3: - case bfd_mach_arm_3M: - ARMul_SelectProcessor (state, ARM_Lock_Prop); - break; - - case bfd_mach_arm_2: - case bfd_mach_arm_2a: - ARMul_SelectProcessor (state, ARM_Fix26_Prop); - break; - } - - if ( mach != bfd_mach_arm_3 - && mach != bfd_mach_arm_3M - && mach != bfd_mach_arm_2 - && mach != bfd_mach_arm_2a) - { - /* Reset mode to ARM. A gdb user may rerun a program that had entered - THUMB mode from the start and cause the ARM-mode startup code to be - executed in THUMB mode. */ - ARMul_SetCPSR (state, SVC32MODE); - } - - if (argv != NULL) - { - /* Set up the command line by laboriously stringing together - the environment carefully picked apart by our caller. */ - - /* Free any old stuff. */ - if (state->CommandLine != NULL) - { - free (state->CommandLine); - state->CommandLine = NULL; - } - - /* See how much we need. */ - for (arg = argv; *arg != NULL; arg++) - argvlen += strlen (*arg) + 1; - - /* Allocate it. */ - state->CommandLine = malloc (argvlen + 1); - if (state->CommandLine != NULL) - { - arg = argv; - state->CommandLine[0] = '\0'; - - for (arg = argv; *arg != NULL; arg++) - { - strcat (state->CommandLine, *arg); - strcat (state->CommandLine, " "); - } - } - } - - if (env != NULL) - { - /* Now see if there's a MEMSIZE spec in the environment. */ - while (*env) - { - if (strncmp (*env, "MEMSIZE=", sizeof ("MEMSIZE=") - 1) == 0) - { - char *end_of_num; - - /* Set up memory limit. */ - state->MemSize = - strtoul (*env + sizeof ("MEMSIZE=") - 1, &end_of_num, 0); - } - env++; - } - } - - return SIM_RC_OK; -} - -void -sim_info (sd, verbose) - SIM_DESC sd ATTRIBUTE_UNUSED; - int verbose ATTRIBUTE_UNUSED; -{ -} - -static int -frommem (state, memory) - struct ARMul_State *state; - unsigned char *memory; -{ - if (state->bigendSig == HIGH) - return (memory[0] << 24) | (memory[1] << 16) - | (memory[2] << 8) | (memory[3] << 0); - else - return (memory[3] << 24) | (memory[2] << 16) - | (memory[1] << 8) | (memory[0] << 0); -} - -static void -tomem (state, memory, val) - struct ARMul_State *state; - unsigned char *memory; - int val; -{ - if (state->bigendSig == HIGH) - { - memory[0] = val >> 24; - memory[1] = val >> 16; - memory[2] = val >> 8; - memory[3] = val >> 0; - } - else - { - memory[3] = val >> 24; - memory[2] = val >> 16; - memory[1] = val >> 8; - memory[0] = val >> 0; - } -} - -int -sim_store_register (sd, rn, memory, length) - SIM_DESC sd ATTRIBUTE_UNUSED; - int rn; - unsigned char *memory; - int length ATTRIBUTE_UNUSED; -{ - init (); - - switch ((enum sim_arm_regs) rn) - { - case SIM_ARM_R0_REGNUM: - case SIM_ARM_R1_REGNUM: - case SIM_ARM_R2_REGNUM: - case SIM_ARM_R3_REGNUM: - case SIM_ARM_R4_REGNUM: - case SIM_ARM_R5_REGNUM: - case SIM_ARM_R6_REGNUM: - case SIM_ARM_R7_REGNUM: - case SIM_ARM_R8_REGNUM: - case SIM_ARM_R9_REGNUM: - case SIM_ARM_R10_REGNUM: - case SIM_ARM_R11_REGNUM: - case SIM_ARM_R12_REGNUM: - case SIM_ARM_R13_REGNUM: - case SIM_ARM_R14_REGNUM: - case SIM_ARM_R15_REGNUM: /* PC */ - case SIM_ARM_FP0_REGNUM: - case SIM_ARM_FP1_REGNUM: - case SIM_ARM_FP2_REGNUM: - case SIM_ARM_FP3_REGNUM: - case SIM_ARM_FP4_REGNUM: - case SIM_ARM_FP5_REGNUM: - case SIM_ARM_FP6_REGNUM: - case SIM_ARM_FP7_REGNUM: - case SIM_ARM_FPS_REGNUM: - ARMul_SetReg (state, state->Mode, rn, frommem (state, memory)); - break; - - case SIM_ARM_PS_REGNUM: - state->Cpsr = frommem (state, memory); - ARMul_CPSRAltered (state); - break; - - default: - return 0; - } - - return -1; -} - -int -sim_fetch_register (sd, rn, memory, length) - SIM_DESC sd ATTRIBUTE_UNUSED; - int rn; - unsigned char *memory; - int length ATTRIBUTE_UNUSED; -{ - ARMword regval; - - init (); - - switch ((enum sim_arm_regs) rn) - { - case SIM_ARM_R0_REGNUM: - case SIM_ARM_R1_REGNUM: - case SIM_ARM_R2_REGNUM: - case SIM_ARM_R3_REGNUM: - case SIM_ARM_R4_REGNUM: - case SIM_ARM_R5_REGNUM: - case SIM_ARM_R6_REGNUM: - case SIM_ARM_R7_REGNUM: - case SIM_ARM_R8_REGNUM: - case SIM_ARM_R9_REGNUM: - case SIM_ARM_R10_REGNUM: - case SIM_ARM_R11_REGNUM: - case SIM_ARM_R12_REGNUM: - case SIM_ARM_R13_REGNUM: - case SIM_ARM_R14_REGNUM: - case SIM_ARM_R15_REGNUM: /* PC */ - regval = ARMul_GetReg (state, state->Mode, rn); - break; - - case SIM_ARM_FP0_REGNUM: - case SIM_ARM_FP1_REGNUM: - case SIM_ARM_FP2_REGNUM: - case SIM_ARM_FP3_REGNUM: - case SIM_ARM_FP4_REGNUM: - case SIM_ARM_FP5_REGNUM: - case SIM_ARM_FP6_REGNUM: - case SIM_ARM_FP7_REGNUM: - case SIM_ARM_FPS_REGNUM: - memset (memory, 0, length); - return 0; - - case SIM_ARM_PS_REGNUM: - regval = ARMul_GetCPSR (state); - break; - - default: - return 0; - } - - while (length) - { - tomem (state, memory, regval); - - length -= 4; - memory += 4; - regval = 0; - } - - return -1; -} - -#ifdef SIM_TARGET_SWITCHES - -static void sim_target_parse_arg_array PARAMS ((char **)); - -typedef struct -{ - char * swi_option; - unsigned int swi_mask; -} swi_options; - -#define SWI_SWITCH "--swi-support" - -static swi_options options[] = - { - { "none", 0 }, - { "demon", SWI_MASK_DEMON }, - { "angel", SWI_MASK_ANGEL }, - { "redboot", SWI_MASK_REDBOOT }, - { "all", -1 }, - { "NONE", 0 }, - { "DEMON", SWI_MASK_DEMON }, - { "ANGEL", SWI_MASK_ANGEL }, - { "REDBOOT", SWI_MASK_REDBOOT }, - { "ALL", -1 } - }; - - -int -sim_target_parse_command_line (argc, argv) - int argc; - char ** argv; -{ - int i; - - for (i = 1; i < argc; i++) - { - char * ptr = argv[i]; - int arg; - - if ((ptr == NULL) || (* ptr != '-')) - break; - - if (strncmp (ptr, SWI_SWITCH, sizeof SWI_SWITCH - 1) != 0) - continue; - - if (ptr[sizeof SWI_SWITCH - 1] == 0) - { - /* Remove this option from the argv array. */ - for (arg = i; arg < argc; arg ++) - argv[arg] = argv[arg + 1]; - argc --; - - ptr = argv[i]; - } - else - ptr += sizeof SWI_SWITCH; - - swi_mask = 0; - - while (* ptr) - { - int i; - - for (i = sizeof options / sizeof options[0]; i--;) - if (strncmp (ptr, options[i].swi_option, - strlen (options[i].swi_option)) == 0) - { - swi_mask |= options[i].swi_mask; - ptr += strlen (options[i].swi_option); - - if (* ptr == ',') - ++ ptr; - - break; - } - - if (i < 0) - break; - } - - if (* ptr != 0) - fprintf (stderr, "Ignoring swi options: %s\n", ptr); - - /* Remove this option from the argv array. */ - for (arg = i; arg < argc; arg ++) - argv[arg] = argv[arg + 1]; - argc --; - i --; - } - return argc; -} - -static void -sim_target_parse_arg_array (argv) - char ** argv; -{ - int i; - - for (i = 0; argv[i]; i++) - ; - - return (void) sim_target_parse_command_line (i, argv); -} - -void -sim_target_display_usage () -{ - fprintf (stderr, "%s=<list> Comma seperated list of SWI protocols to supoport.\n\ - This list can contain: NONE, DEMON, ANGEL, REDBOOT and/or ALL.\n", - SWI_SWITCH); -} -#endif - -SIM_DESC -sim_open (kind, ptr, abfd, argv) - SIM_OPEN_KIND kind; - host_callback *ptr; - struct _bfd *abfd; - char **argv; -{ - sim_kind = kind; - if (myname) free (myname); - myname = (char *) xstrdup (argv[0]); - sim_callback = ptr; - -#ifdef SIM_TARGET_SWITCHES - sim_target_parse_arg_array (argv); -#endif - - /* Decide upon the endian-ness of the processor. - If we can, get the information from the bfd itself. - Otherwise look to see if we have been given a command - line switch that tells us. Otherwise default to little endian. */ - if (abfd != NULL) - big_endian = bfd_big_endian (abfd); - else if (argv[1] != NULL) - { - int i; - - /* Scan for endian-ness switch. */ - for (i = 0; (argv[i] != NULL) && (argv[i][0] != 0); i++) - if (argv[i][0] == '-' && argv[i][1] == 'E') - { - char c; - - if ((c = argv[i][2]) == 0) - { - ++i; - c = argv[i][0]; - } - - switch (c) - { - case 0: - sim_callback->printf_filtered - (sim_callback, "No argument to -E option provided\n"); - break; - - case 'b': - case 'B': - big_endian = 1; - break; - - case 'l': - case 'L': - big_endian = 0; - break; - - default: - sim_callback->printf_filtered - (sim_callback, "Unrecognised argument to -E option\n"); - break; - } - } - } - - return (SIM_DESC) 1; -} - -void -sim_close (sd, quitting) - SIM_DESC sd ATTRIBUTE_UNUSED; - int quitting ATTRIBUTE_UNUSED; -{ - if (myname) - free (myname); - myname = NULL; -} - -SIM_RC -sim_load (sd, prog, abfd, from_tty) - SIM_DESC sd; - char *prog; - bfd *abfd; - int from_tty ATTRIBUTE_UNUSED; -{ - bfd *prog_bfd; - - prog_bfd = sim_load_file (sd, myname, sim_callback, prog, abfd, - sim_kind == SIM_OPEN_DEBUG, 0, sim_write); - if (prog_bfd == NULL) - return SIM_RC_FAIL; - ARMul_SetPC (state, bfd_get_start_address (prog_bfd)); - if (abfd == NULL) - bfd_close (prog_bfd); - return SIM_RC_OK; -} - -void -sim_stop_reason (sd, reason, sigrc) - SIM_DESC sd ATTRIBUTE_UNUSED; - enum sim_stop *reason; - int *sigrc; -{ - if (stop_simulator) - { - *reason = sim_stopped; - *sigrc = SIGINT; - } - else if (state->EndCondition == 0) - { - *reason = sim_exited; - *sigrc = state->Reg[0] & 255; - } - else - { - *reason = sim_stopped; - if (state->EndCondition == RDIError_BreakpointReached) - *sigrc = SIGTRAP; - else - *sigrc = 0; - } -} - -void -sim_do_command (sd, cmd) - SIM_DESC sd ATTRIBUTE_UNUSED; - char *cmd ATTRIBUTE_UNUSED; -{ - (*sim_callback->printf_filtered) - (sim_callback, - "This simulator does not accept any commands.\n"); -} - -void -sim_set_callbacks (ptr) - host_callback *ptr; -{ - sim_callback = ptr; -} |