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Diffstat (limited to 'gdb/arc-jtag-tdep.c')
| -rw-r--r-- | gdb/arc-jtag-tdep.c | 638 |
1 files changed, 0 insertions, 638 deletions
diff --git a/gdb/arc-jtag-tdep.c b/gdb/arc-jtag-tdep.c deleted file mode 100644 index 84015387bb6..00000000000 --- a/gdb/arc-jtag-tdep.c +++ /dev/null @@ -1,638 +0,0 @@ -/* Target dependent code for ARC700, for GDB, the GNU debugger. - - Copyright 2005 Free Software Foundation, Inc. - - Contributed by Codito Technologies Pvt. Ltd. (www.codito.com) - - Authors: - Soam Vasani <soam.vasani@codito.com> - Ramana Radhakrishnan <ramana.radhakrishnan@codito.com> - - This file is part of GDB. - - This program 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 of the License, or - (at your option) any later version. - - This program 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. -*/ -#include <string.h> - -#include "defs.h" -#include "osabi.h" -#include "frame.h" -#include "regcache.h" -#include "gdb_assert.h" -#include "inferior.h" -#include "gdbcmd.h" -#include "reggroups.h" - -#include "arc-tdep.h" -#include "arc-jtag.h" - - -#ifdef ARC4_JTAG -/* brk */ -unsigned int a4_jtag_breakpoint_size = 4; -unsigned char a4_jtag_breakpoint_insn[4] = { 0x00, 0xfe, 0xff, 0x1f }; -#define A4_HALT_VALUE 0x02000000 -#else -/* brk_s */ -unsigned int arc700_jtag_breakpoint_size = 2; -unsigned char arc700_jtag_breakpoint_insn[2] = { 0xff, 0x7f }; -#endif - - - -struct arc_reg_info -{ - char *name ; - int hw_regno; - char *description; -#ifdef ARC4_JTAG - enum arc4_jtag_regnums gdbregno; -#else - enum arc700_jtag_regnums gdbregno; -#endif - enum ARCProcessorVersion arcVersionSupported; -}; - - - -static const char * -arc_jtag_register_name (int regno) -{ - static char jtag_names[][30] = { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", - "r7", "r8", "r9", "r10", "r11", "r12", "r13", - "r14", "r15", "r16", "r17", "r18", "r19", "r20", - "r21", "r22", "r23", "r24", "r25", "r26", - - "fp", - "sp", - "ilink1", - "ilink2", - "blink", - - /* Extension core regs are 32..59 inclusive. */ - "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", - "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", "r48", "r49", - "r50", "r51", "r52", "r53", "r54", "r55", "r56", "r57", "r58", "r59", - - "lp_count", - - /* 61 is reserved, 62 is not a real register. */ - /*FIXMEA: The following 3 are supposed to be registers - that are used only to encode immediate values in A4*/ - "r61", - "r62", - - "pcl", - - /* Now the aux registers. */ - - "status", - "semaphore", - "lp_start", - "lp_end", - "identity", - "debug", - -#ifndef ARC4_JTAG - "pc", - "status32", - "status32_l1", - "status32_l2", - - "count0", - "control0", - "limit0", - "int_vector_base", - "aux_macmode", - "aux_irq_lv12", - - - "count1", - "control1", - "limit1", - "aux_irq_lev", - "aux_irq_hint", - "eret", - "erbta", - "erstatus", - "ecr", - "efa", - "icause1", - "icause2", - "aux_ienable", - "aux_itrigger", - "xpu", - "bta", - "bta_l1", - "bta_l2", - "aux_irq_pulse_cancel", - "aux_irq_pending", - - /* Build configuration registers. */ - "bcr_0", - "dccm_base_build", - "crc_base_build", - "bta_link_build", - "dvbf_build", - "tel_instr_build", - "bcr_6", - "memsubsys", - "vecbase_ac_build", - "p_base_address", - "bcr_a", - "bcr_b", - "bcr_c", - "bcr_d", - "bcr_e", - "mmu_build", - "arcangel_build", - "bcr_11", - "d_cache_build", - "madi_build", - "dccm_build", - "timer_build", - "ap_build", - "icache_build", - "iccm_build", - "dspram_build", - "mac_build", - "multiply_build", - "swap_build", - "norm_build", - "minmax_build", - "barrel_build", -#endif - - }; - - gdb_assert(ARRAY_SIZE (jtag_names) == NUM_REGS + NUM_PSEUDO_REGS); - gdb_assert(regno >=0 && regno < NUM_REGS + NUM_PSEUDO_REGS); - - return jtag_names[regno]; -} - -int -arc_jtag_register_reggroup_p (int regnum, struct reggroup *group) -{ - /* These registers don't exist, so they are not in any reggroup. */ - if ((regnum >= 32 && regnum <= 59) || (regnum == 61) || (regnum == 62)) - return 0; - - /* Which regs to save/restore ? */ - if ((group == save_reggroup || group == restore_reggroup)) - { - /* Save/restore: - 1. all core regs, except PCL (PCL is not writable) - 2. aux regs LP_START..LP_END (IDENTITY is not writable) - 3. aux regs PC_REGNUM..STATUS32_L2 - 3. aux regs ERET..EFA */ - return ( ( regnum >= 0 && regnum < ARC_PCL_REGNUM) - || ( regnum >= ARC_LP_START_REGNUM && regnum<= ARC_LP_END_REGNUM) -#ifdef ARC4_JTAG - || ( regnum == ARC_STATUS_REGNUM) -#else - || ( regnum >= ARC_PC_REGNUM && regnum <= ARC_STATUS32_L2_REGNUM) - || ( regnum >= ARC_ERET_REGNUM && regnum <= ARC_EFA_REGNUM) -#endif - ); - } - - return -1; -} - -static void -arc_jtag_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, - struct frame_info *frame, int regnum, int all) -{ - int i; - - if (regnum >= 0 ) - { - default_print_registers_info (gdbarch, file, frame, regnum, all); - return; - } - - /* if regnum < 0 , print all registers */ - - for (i=0; i <= 26; ++i) - default_print_registers_info (gdbarch, file, frame, i, all); - default_print_registers_info (gdbarch, file, frame, - ARC_FP_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_SP_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_ILINK1_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_ILINK2_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_BLINK_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_LP_COUNT_REGNUM, all); - - /* now the aux registers */ - if (!all) - { - default_print_registers_info (gdbarch, file, frame, - ARC_LP_START_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_LP_END_REGNUM, all); - -#ifndef ARC4_JTAG - default_print_registers_info (gdbarch, file,frame, - ARC_STATUS32_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_BTA_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_EFA_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_ERET_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_STATUS32_L1_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_STATUS32_L2_REGNUM, all); - default_print_registers_info (gdbarch, file, frame, - ARC_ERSTATUS_REGNUM, all); - - - /* PC */ - default_print_registers_info (gdbarch, file, frame, - ARC_PC_REGNUM, all); -#endif - } - else - { - /* This part needs cleaning up. */ - for (i = ARC_STATUS_REGNUM; -#ifndef ARC4_JTAG - i <= ARC_AUX_IRQ_PENDING_REGNUM; -#else /*FIXMEA*/ - i <= ARC_DEBUG_REGNUM; -#endif - i ++ ) - default_print_registers_info (gdbarch, file, frame , - i, all); - - - for (i = ARC_STATUS_REGNUM ; -#ifndef ARC4_JTAG - i <= ARC_AUX_IRQ_PENDING_REGNUM; -#else /*FIXMEA*/ - i <= ARC_DEBUG_REGNUM; -#endif - i ++ ) - default_print_registers_info (gdbarch, file, frame, - i, all); - -#ifndef ARC4_JTAG - for (i = ARC_BCR_1_REGNUM ; - i <= ARC_BCR_5_REGNUM ; - i ++ ) - default_print_registers_info (gdbarch, file , frame, - i , all); - - for (i = ARC_BCR_7_REGNUM ; - i <= ARC_BCR_9_REGNUM; - i ++ ) - default_print_registers_info (gdbarch, file, frame, - i , all); - - for (i = ARC_BCR_F_REGNUM; - i <= ARC_BCR_10_REGNUM; - i ++ ) - default_print_registers_info (gdbarch, file, frame , - i , all); - - for (i = ARC_BCR_12_REGNUM; - i <= ARC_BCR_1F_REGNUM; - i ++) - default_print_registers_info (gdbarch, file, frame , - i , all); -#endif //if no ARC4_JTAG - - - } -} - -/* Command: aux-read <from> <to> - - Read and display a range of aux registers. Some of the aux registers - (pc, debug, etc.) are part of the register set, but this is a more - general interface. - - We should eventually change this to use the ui_out stuff rather than - printf_filtered. */ -static void -arc_jtag_aux_read_command (char *arg, int from_tty) -{ - char *arg2 = 0; - struct expression *expr; - struct value *val; - struct cleanup *old_chain = 0; - int auxregno, auxregno2 = 0, nrregs; - unsigned int *buf; - int i, nrtransfered; - - if (!arg) - { - printf_filtered ("aux-read <REG-FROM> [<REG-TO>]\n"); - return; - } - - /* strip leading spaces */ - while(*arg == ' ') - arg++; - - /* two arguments ? */ - /* This assumes that the first arg cannot have spaces. (The disas command - also seems to work this way.) */ - arg2 = strchr (arg, ' '); - - /* get the second one */ - if (arg2) - { - struct expression *expr2; - struct value *val2; - - arg2[0] = 0; - arg2++; - - expr2 = parse_expression (arg2); - val2 = evaluate_expression (expr2); - xfree (expr2); - - auxregno2 = *(int *)(VALUE_CONTENTS (val2)); - } - - /* first arg */ - expr = parse_expression (arg); - val = evaluate_expression (expr); - old_chain = make_cleanup (free_current_contents, &expr); - - auxregno = *(int *)(VALUE_CONTENTS (val)); - - /* so, how many regs do we want ? */ - if (arg2) - { - if (auxregno2 < auxregno) - { - warning ("aux-read: %s < %s, showing one register", arg2, arg); - nrregs = 1; - } - else - nrregs = auxregno2 - auxregno + 1; - } - else - nrregs = 1; - - buf = xcalloc (nrregs, sizeof(int)); - make_cleanup (free_current_contents, &buf); - - /* Go get 'em ! */ - nrtransfered = target_read_aux_reg (buf, auxregno, nrregs); - if (nrtransfered <= 0) - { - do_cleanups (old_chain); - error ("aux-read: couldn't read any registers."); - } - else if (nrtransfered < nrregs) - { - warning ("aux-read: could only read %d registers", nrtransfered); - } - - gdb_assert (nrtransfered <= nrregs); - - /* Show them. */ - for (i = auxregno; i - auxregno < nrtransfered; ++i) - { - if ((i - auxregno) % 4 == 0) - printf_filtered("%s%08x: ", ((i - auxregno) ? "\n" : ""), i); - - printf_filtered ("%08x ", buf[i - auxregno]); - } - printf_filtered ("\n"); - - do_cleanups (old_chain); -} - -/* aux-write <regnum> = <value> - Write VALUE to aux register REGNUM. */ -static void -arc_jtag_aux_write_command (char *arg, int from_tty) -{ - char *value_arg = 0; - struct expression *regnum_expr, *value_expr; - struct value *regnum_val, *value_val; - struct cleanup *old_chain = 0; - unsigned int regnum, value; - int err; - - if (!arg) - { - printf_filtered ("aux-write <regnum> = <value>\n"); - return; - } - - value_arg = strchr(arg, '='); - if (!value_arg) - { - error ("aux-write: can't find second argument\n\ -Usage: aux-write <regnum> = <value>"); - return; - } - value_arg[0] = 0; - value_arg++; - - /* Regnum expression */ - regnum_expr = parse_expression (arg); - regnum_val = evaluate_expression (regnum_expr); - old_chain = make_cleanup (free_current_contents, ®num_expr); - regnum = *(unsigned int *)(VALUE_CONTENTS (regnum_val)); - - /* Value expression */ - value_expr = parse_expression (value_arg); - value_val = evaluate_expression (value_expr); - make_cleanup (free_current_contents, &value_expr); - value = *(unsigned int *)(VALUE_CONTENTS (value_val)); - - /* Write it. */ - err = target_write_aux_reg (&value, regnum, 1); - if (err != 1) - { - do_cleanups (old_chain); - error ("aux-write: couldn't write to register 0x%x", regnum); - } - - do_cleanups (old_chain); -} - -#ifdef ARC4_JTAG -// gdbarch_write_pc_ftype *write_pc; -/* - Write PC - Arguments: - 1.CORE_ADDR val : Contains the value to be written into PC. - 2.ptid_t ptid: Process id of the process. - - Returns: void - Description: FIXMEA: Update - Reads the status register - Inserts the value (upper 24 bit) into the bits - 0-23 in the status register - Write the status register - */ -void -a4_jtag_write_pc (CORE_ADDR val, ptid_t ptid) -{ - CORE_ADDR insert_val = val >> 2; - unsigned int buffer; - - - if(debug_arc_jtag_target_message) - printf_filtered ("\n -----***------------ a4_jtag_write_pc Entered ---*%%*#\n"); - - - target_read_aux_reg (&buffer, ARC_HW_STATUS_REGNUM, 1); - - if (!(buffer & A4_HALT_VALUE)) - { - if(debug_arc_jtag_target_message) - printf_filtered ("\n***** Halting Processor... *********\n"); - - buffer = buffer | A4_HALT_VALUE ; - target_write_aux_reg (&buffer, ARC_HW_STATUS_REGNUM, 1); - /* Now the A4 processor has halted*/ - } - - if(debug_arc_jtag_target_message) - printf_filtered (" \nWriting value %u to PC\n", val); - - - target_read_aux_reg (&buffer, ARC_HW_STATUS_REGNUM, 1); - if(debug_arc_jtag_target_message) - printf_filtered (" \nValue of Status Register before writing %d\ - \n Value of PC: 0x%x\n", buffer, buffer & 0x00ffffff); - - buffer = buffer & 0xff000000; - insert_val = insert_val & 0x00ffffff; - buffer = buffer | insert_val ; - - if(debug_arc_jtag_target_message) - printf_filtered (" \nValue of Status Register to be written %d\ - \n Value of PC: 0x%x\n", buffer, buffer & 0x00ffffff); - - // jtag_ops.jtag_write_aux_reg (ARC_STATUS_REGNUM, buffer); - target_write_aux_reg (&buffer, ARC_HW_STATUS_REGNUM, 1); - - if(debug_arc_jtag_target_message) - { - target_read_aux_reg (&buffer, ARC_HW_STATUS_REGNUM, 1); - printf_filtered (" \nValue of Status Register after reading again %d\ - \n Value of PC: 0x%x\n", buffer, buffer & 0x00ffffff); - } - - if(debug_arc_jtag_target_message) - printf_filtered ("\n -----***------------ a4_jtag_write_pc Leaving ---*%%*#\n"); - -} - - -/* - Read PC - Arguments: - 1.ptid_t ptid: Process id of the process. - - Returns: CORE_ADDR - Description: - Reads the status register - Extracts the PC value from it. - Right shift twice to get correct value of PC - return PC -*/ -CORE_ADDR -a4_jtag_read_pc (ptid_t ptid) -{ - unsigned int buffer; - - if (debug_arc_jtag_target_message) - printf_filtered ("\n Entering a4_jtag_read_pc ()"); - buffer = 0; - target_read_aux_reg (&buffer, ARC_HW_STATUS_REGNUM, 1); - if (debug_arc_jtag_target_message) - printf_filtered ("\n Value of Status Reg: 0x%x",buffer); - buffer = buffer & 0x00ffffff; - buffer = buffer << 2; - - if (debug_arc_jtag_target_message) - printf_filtered ("\n Leaving a4_jtag_read_pc ()\ - \n Value of Pc: 0x%x\n", buffer); - - return buffer; -} - -#endif // ARC4_JTAG - -ARCVariantsInfo arc_debug_processor_information; - -struct gdbarch * -arc_jtag_init (struct gdbarch *gdbarch) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - -#ifndef ARC4_JTAG - tdep->arc_breakpoint_size = arc700_jtag_breakpoint_size; - tdep->arc_breakpoint_insn = arc700_jtag_breakpoint_insn; -#else - tdep->arc_breakpoint_size = a4_jtag_breakpoint_size; - tdep->arc_breakpoint_insn = a4_jtag_breakpoint_insn; -#endif - - set_gdbarch_num_regs (gdbarch, ARC_NR_REGS); -#ifndef ARC4_JTAG - set_gdbarch_pc_regnum (gdbarch, ARC_PC_REGNUM); -#else - // set_gdbarch_pc_regnum (gdbarch, ARC_STATUS_REGNUM); - set_gdbarch_write_pc (gdbarch, a4_jtag_write_pc); - set_gdbarch_read_pc (gdbarch, a4_jtag_read_pc); -#endif - set_gdbarch_register_name (gdbarch, arc_jtag_register_name); - - set_gdbarch_print_registers_info (gdbarch, arc_jtag_print_registers_info); - - tdep->register_reggroup_p = arc_jtag_register_reggroup_p; - - tdep->lowest_pc = 0; - - tdep->sigtramp_p = NULL; - - tdep->arc_processor_variant_info = &arc_debug_processor_information; - - /* Auxillary register commands. */ - add_cmd ("arc-aux-read", class_vars, arc_jtag_aux_read_command, - "Read and show a range of auxillary registers.\n\ -Usage: arc-aux-read <REG-FROM> [<REG-TO>]\n\ -REG-FROM and REG-TO can be any expressions that evaluate to integers.\n\ -If REG-TO is not specified, one register is displayed.", - &cmdlist); - - add_cmd ("arc-aux-write", class_vars, arc_jtag_aux_write_command, - "Write to an auxillary register.\n\ -Usage: arc-aux-write <REG> = <VALUE>\n\ -REG and VALUE can be any expressions that evaluate to integers.", - &cmdlist); - - return gdbarch; -} - |