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//========================================================================== // // arm-mon.c // // Support code to extend the generic monitor code to support // ARM(R) processors. // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos 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. // // eCos 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 eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): // Contributors: gthomas // Date: 1999-10-20 // Purpose: Support code to extend the generic monitor code to support // ARM(R) processors. // Description: Further board specific support is in other files. // This file contains: // register names lookup table // // Empty Stubs: // Interval timer - This should really belong to the application // operating system. // // Should not contain: // low level uart getchar and putchar functions // delay function to support uart // // ARM is a Registered Trademark of Advanced RISC Machines // Limited. // Other Brands and Trademarks are the property of their // respective owners. // //####DESCRIPTIONEND#### // //========================================================================= #include <setjmp.h> #include <bsp/bsp.h> #include <bsp/cpu.h> #ifdef DISASSEMBLER #include <dis-asm.h> #endif #include "cpu_info.h" #include "monitor.h" /* This module is required to provide many of the services defined in tservice.h */ static char *apcs_names[] = { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4", "v5", "v6", "sl", "fp", "ip", "sp", "lr", "pc", #if HAVE_FLOAT_REGS "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "fps", #endif "ps" }; static char *standard_names[] = { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "pc", #if HAVE_FLOAT_REGS "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "fps", #endif "ps", }; void arm_othernames (void); struct regstruct regtab[] = { { 0, REG_R0, REGTYPE_INT }, { 0, REG_R1, REGTYPE_INT }, { 0, REG_R2, REGTYPE_INT }, { 0, REG_R3, REGTYPE_INT }, { 0, REG_R4, REGTYPE_INT }, { 0, REG_R5, REGTYPE_INT }, { 0, REG_R6, REGTYPE_INT }, { 0, REG_R7, REGTYPE_INT }, { 0, REG_R8, REGTYPE_INT }, { 0, REG_R9, REGTYPE_INT }, { 0, REG_R10, REGTYPE_INT }, { 0, REG_R11, REGTYPE_INT }, { 0, REG_R12, REGTYPE_INT }, { 0, REG_SP, REGTYPE_INT }, { 0, REG_LR, REGTYPE_INT }, { 0, REG_PC, REGTYPE_INT }, #if HAVE_FLOAT_REGS { 0, REG_F0, REGTYPE_FLOAT }, { 0, REG_F1, REGTYPE_FLOAT }, { 0, REG_F2, REGTYPE_FLOAT }, { 0, REG_F3, REGTYPE_FLOAT }, { 0, REG_F4, REGTYPE_FLOAT }, { 0, REG_F5, REGTYPE_FLOAT }, { 0, REG_F6, REGTYPE_FLOAT }, { 0, REG_F6, REGTYPE_FLOAT }, { 0, REG_FPS, REGTYPE_FLOAT }, #endif { 0, REG_CPSR, REGTYPE_INT }, { 0, 0, 0 } /* Terminating element must be last */ } ; void initialize_mon(void) { /* FIXME: Convert ALL variable initializations to assignments in order to support ROMABLE CODE. This includes the register table */ /* * Call arm_othernames to sync up Cygmon and the disassembler * and ensure they are using the same set of registernames */ arm_othernames(); /* * Call arm_othernames again to revert to the assembler * default names */ arm_othernames(); } /* initialize_mon */ /* read_memory write_memory Defaults to generic_mem.c */ /* SET_BREAKPOINT - CLEAR_BREAKPOINT Defaults to generic_bp32.c */ #ifndef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS /* Return the currently-saved value corresponding to register "regnum". */ target_regval_t get_register (int regnum) { struct regstruct *p; target_regval_t reg; int offset, len; char *dest = (char*)0; for (p = regtab; p->registername && p->registernumber != regnum; ++p) ; if (p->registername) { len = bsp_regsize(p->registernumber); offset = bsp_regbyte(p->registernumber); switch (p->registertype) { case REGTYPE_INT: dest = (char*)&(reg.i); break; #if HAVE_FLOAT_REGS case REGTYPE_FLOAT: dest = (char*)&(reg.f); break; #endif #if HAVE_DOUBLE_REGS case REGTYPE_DOUBLE: dest = (char*)&(reg.d); break; #endif } if (dest) memcpy(dest, (char *)mon_saved_regs + offset, len); } else reg.i = 0; return reg; } /* Store VALUE in the register corresponding to REGNUM. */ void put_register (int regnum, target_regval_t value) { int offset, len; len = bsp_regsize(regnum); offset = bsp_regbyte(regnum); memcpy((char *)mon_saved_regs + offset, &value, len); } #endif // !CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS /* Change to the alternate register set names */ void arm_othernames (void) { static int regset = 1; char **name; int i; #ifdef DISASSEMBLER /* Change the disassembler */ regset = arm_toggle_regnames(); #else regset = (regset == 0) ? 1 : 0; #endif /* Change cygmon */ if (regset == 1) /* Disassembler is using apcs names. */ name = apcs_names; else /* Disassembler is using standard names. */ name = standard_names; for (i = 0; i < (sizeof(apcs_names)/sizeof(apcs_names[0])); i++) regtab[i].registername = name[i]; } #ifdef __ECOS__ #include <pkgconf/hal.h> #include <cyg/hal/hal_arch.h> #include "bsp/common/bsp_if.h" int machine_syscall(HAL_SavedRegisters *regs) { int res, err; err = _bsp_do_syscall(regs->d[0], // Function regs->d[1], regs->d[2], regs->d[3], 0, // arguments, &res); regs->d[0] = res; regs->pc += 4; // Advance PC return err; } #endif
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