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[/] [openrisc/] [tags/] [or1ksim/] [or1ksim-0.3.0/] [debug/] [debug-unit.c] - Rev 307
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/* debug_unit.c -- Simulation of Or1k debug unit Copyright (C) 2001 Chris Ziomkowski, chris@asics.ws Copyright (C) 2008 Embecosm Limited Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> This file is part of OpenRISC 1000 Architectural Simulator. 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 3 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, see <http://www.gnu.org/licenses/>. */ /* This program is commented throughout in a fashion suitable for processing with Doxygen. */ /* This is an architectural level simulation of the Or1k debug unit as described in OpenRISC 1000 System Architecture Manual, v. 0.1 on 22 April, 2001. This unit is described in Section 13. Every attempt has been made to be as accurate as possible with respect to the registers and the behavior. There are no known limitations at this time. Note in particular that there is an alternative (smaller) debug unit on the OpenCores website, designed by Igor Mohor. At present this interface is NOT supported here. */ /* Autoconf and/or portability configuration */ #include "config.h" #include "port.h" /* System includes */ #include <stdlib.h> #include <stdio.h> #include <assert.h> /* Package includes */ #include "arch.h" #include "debug-unit.h" #include "sim-config.h" #include "except.h" #include "abstract.h" #include "parse.h" #include "gdb.h" #include "except.h" #include "opcode/or32.h" #include "spr-defs.h" #include "execute.h" #include "sprs.h" #include "toplevel-support.h" #include "rsp-server.h" /*! The fields for the RISCOP register in the development interface scan chain (JTAG_CHAIN_DEVELOPMENT). */ #define RISCOP_STALL 0x00000001 /*!< Stall processor */ #define RISCOP_RESET 0x00000002 /*!< Reset processor (clears stall) */ /*! The various addresses in the development interface scan chain (JTAG_CHAIN_DEVELOPMENT). Only documents the ones we actually have*/ enum development_interface_address_space { DEVELOPINT_RISCOP = 4, DEVELOPINT_MAX = 27, }; /*! Data structure holding debug registers and their bits */ unsigned long development[DEVELOPINT_MAX + 1]; /*! The current scan chain being accessed */ static enum debug_scan_chain_ids current_scan_chain = JTAG_CHAIN_GLOBAL; /*! External STALL signal to debug interface */ static int in_reset = 0; /*! Forward declaration of static functions */ static int calculate_watchpoints (enum debug_unit_action action, unsigned long udata); static int get_devint_reg (unsigned int addr, unsigned long *data); static int set_devint_reg (unsigned int addr, unsigned long data); static int debug_set_mem (oraddr_t address, uorreg_t data); static int debug_get_mem (oraddr_t address, uorreg_t * data); /*---------------------------------------------------------------------------*/ /*!Reset the debug unit Clear all development inteface registers */ /*---------------------------------------------------------------------------*/ void du_reset () { int i; for (i = 0; i <= DEVELOPINT_MAX; i++) { development[i] = 0; } set_stall_state (0); } /* du_reset () */ /*---------------------------------------------------------------------------*/ /*!Set the stall state of the processor @param[in] state If non-zero stall the processor. */ /*---------------------------------------------------------------------------*/ void set_stall_state (int state) { #if DYNAMIC_EXECUTION if (state) { PRINTF("FIXME: Emulating a stalled cpu not implemented " "(in the dynamic execution model)\n"); } #endif development[DEVELOPINT_RISCOP] &= ~RISCOP_STALL; development[DEVELOPINT_RISCOP] |= state ? RISCOP_STALL : 0; runtime.cpu.stalled = state; /* If we unstall, any changed NPC becomes valid again */ if (!runtime.cpu.stalled) { cpu_state.npc_not_valid = 0; } } /* set_stall_state () */ /*---------------------------------------------------------------------------*/ /*!Check for a breakpoint on this action @note This does not include single-stepping - that will be picked up in the main loop AFTER the instruction has executed. @param[in] action The action to be checked @param[in] udata The data to compare against (for some actions) @return Non-zero if there was a breakpoint, 0 otherwise. */ /*---------------------------------------------------------------------------*/ int check_debug_unit (enum debug_unit_action action, unsigned long udata) { /* Do not stop if we have debug module disabled or during reset */ if (!config.debug.enabled || in_reset) { return 0; } /* is any watchpoint enabled to generate a break or count? If not, ignore */ if (cpu_state.sprs[SPR_DMR2] & (SPR_DMR2_WGB | SPR_DMR2_AWTC)) { return calculate_watchpoints (action, udata); } return 0; /* No breakpoint */ } /* check_debug_unit () */ /*---------------------------------------------------------------------------*/ /*!Check whether we should stall the RISC or cause an exception. Rewritten by JPB for current architecture. @param[in] action The action to be checked @param[in] udata The data to compare against (for some actions) @return Non-zero if this should generate a breakpoint */ /*---------------------------------------------------------------------------*/ static int calculate_watchpoints (enum debug_unit_action action, unsigned long udata) { int i; int match_found = 0; /* Flag if we found any matchpoint */ int breakpoint_found; /* Flag if we found any breakpoint */ /* Debug registers */ unsigned long dmr1; unsigned long dmr2; /* Debug bit fields */ unsigned char counter0_enabled; unsigned char counter1_enabled; unsigned char counter0_matched; unsigned char counter1_matched; unsigned char mp[MAX_MATCHPOINTS]; /* Which matchpoints matched */ unsigned char wp[MAX_WATCHPOINTS]; /* Which watchpoints matched */ memset (mp, sizeof (mp), 0); memset (wp, sizeof (wp), 0); /* First find the matchpoints */ for (i = 0; i < MAX_MATCHPOINTS; i++) { unsigned long dcr = cpu_state.sprs[SPR_DCR (i)]; unsigned char dcr_dp = dcr & SPR_DCR_DP; unsigned char dcr_cc; unsigned char dcr_sc; unsigned char dcr_ct; int match_so_far; if (SPR_DCR_DP != dcr_dp) { continue; } dcr_ct = dcr & SPR_DCR_CT; match_so_far = 0; switch (dcr_ct) { case SPR_DCR_CT_IFEA: match_so_far = (DebugInstructionFetch == action); break; case SPR_DCR_CT_LEA: match_so_far = (DebugLoadAddress == action); break; case SPR_DCR_CT_SEA: match_so_far = (DebugStoreAddress == action); break; case SPR_DCR_CT_LD: match_so_far = (DebugLoadData == action); break; case SPR_DCR_CT_SD: match_so_far = (DebugStoreData == action); break; case SPR_DCR_CT_LSEA: match_so_far = (DebugLoadAddress == action) || (DebugStoreAddress == action); break; case SPR_DCR_CT_LSD: match_so_far = (DebugLoadData == action) || (DebugStoreData == action); break; default: break; } if (!match_so_far) { continue; /* Skip to the end of the loop */ } dcr_sc = dcr & SPR_DCR_SC; dcr_cc = dcr & SPR_DCR_CC; /* Perform signed comparison? */ if (SPR_DCR_SC == dcr_sc) { long int sop1 = udata; long int sop2 = cpu_state.sprs[SPR_DVR (i)]; switch (dcr & SPR_DCR_CC) { case SPR_DCR_CC_MASKED: mp[i] = sop1 & sop2; break; case SPR_DCR_CC_EQUAL: mp[i] = sop1 == sop2; break; case SPR_DCR_CC_NEQUAL: mp[i] = sop1 != sop2; break; case SPR_DCR_CC_LESS: mp[i] = sop1 < sop2; break; case SPR_DCR_CC_LESSE: mp[i] = sop1 <= sop2; break; case SPR_DCR_CC_GREAT: mp[i] = sop1 > sop2; break; case SPR_DCR_CC_GREATE: mp[i] = sop1 >= sop2; break; default: break; } } else { unsigned long int op1 = udata; unsigned long int op2 = cpu_state.sprs[SPR_DVR (i)]; switch (dcr & SPR_DCR_CC) { case SPR_DCR_CC_MASKED: mp[i] = op1 & op2; break; case SPR_DCR_CC_EQUAL: mp[i] = op1 == op2; break; case SPR_DCR_CC_NEQUAL: mp[i] = op1 != op2; break; case SPR_DCR_CC_LESS: mp[i] = op1 < op2; break; case SPR_DCR_CC_LESSE: mp[i] = op1 <= op2; break; case SPR_DCR_CC_GREAT: mp[i] = op1 > op2; break; case SPR_DCR_CC_GREATE: mp[i] = op1 >= op2; break; default: break; } } if (mp[i]) { match_found = 1; /* A match was found */ } } /* If no match was found, give up here, since none of the watchpoints will change. */ if (!match_found) { return 0; } /* Compute the non-counting watchpoints. Done by slog, since each one is different. The counting watchpoints will be done AFTER the counts have been incremented. Done in order, so the chaining works correctly. This code expects the number of matchpoints to be 8. As a precaution, that is asserted here. IMPORTANT..... The architecture manual appears to be wrong, in suggesting that watchpoint 4 chains with external watchpoint in the same way as watchpoint 0. The Verilog source code suggests it chains with watchpoint 3. */ assert (MAX_MATCHPOINTS == 8); dmr1 = cpu_state.sprs[SPR_DMR1]; switch (dmr1 & SPR_DMR1_CW0) { case 0: wp[0] = mp[0]; break; case SPR_DMR1_CW0_AND: printf ("External watchpoint not supported\n"); break; case SPR_DMR1_CW0_OR: printf ("External watchpoint not supported\n"); break; case SPR_DMR1_CW0: printf ("SPR DMR1_CW0=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW1) { case 0: wp[1] = mp[1]; break; case SPR_DMR1_CW1_AND: wp[1] = mp[1] && wp[0]; break; case SPR_DMR1_CW1_OR: wp[1] = mp[1] || wp[0]; break; case SPR_DMR1_CW1: printf ("SPR DMR1_CW1=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW2) { case 0: wp[2] = mp[2]; break; case SPR_DMR1_CW2_AND: wp[2] = mp[2] && wp[1]; break; case SPR_DMR1_CW2_OR: wp[2] = mp[2] || wp[1]; break; case SPR_DMR1_CW2: printf ("SPR DMR1_CW2=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW3) { case 0: wp[3] = mp[3]; break; case SPR_DMR1_CW3_AND: wp[3] = mp[3] && wp[2]; break; case SPR_DMR1_CW3_OR: wp[3] = mp[3] || wp[2]; break; case SPR_DMR1_CW3: printf ("SPR DMR1_CW3=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW4) { case 0: wp[4] = mp[4]; break; case SPR_DMR1_CW4_AND: wp[4] = mp[4] && wp[3]; break; case SPR_DMR1_CW4_OR: wp[4] = mp[4] || wp[3]; break; case SPR_DMR1_CW4: printf ("SPR DMR1_CW4=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW5) { case 0: wp[5] = mp[5]; break; case SPR_DMR1_CW5_AND: wp[5] = mp[5] && wp[4]; break; case SPR_DMR1_CW5_OR: wp[5] = mp[5] || wp[4]; break; case SPR_DMR1_CW5: printf ("SPR DMR1_CW5=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW6) { case 0: wp[6] = mp[6]; break; case SPR_DMR1_CW6_AND: wp[6] = mp[6] && wp[5]; break; case SPR_DMR1_CW6_OR: wp[6] = mp[6] || wp[5]; break; case SPR_DMR1_CW6: printf ("SPR DMR1_CW6=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW7) { case 0: wp[7] = mp[7]; break; case SPR_DMR1_CW7_AND: wp[7] = mp[7] && wp[6]; break; case SPR_DMR1_CW7_OR: wp[7] = mp[7] || wp[6]; break; case SPR_DMR1_CW7: printf ("SPR DMR1_CW7=11 reserved\n"); break; } /* Increment counters. Note the potential ambiguity, if the last two watchpoints, which depend on the counters, also increment the counters. Since they cannot yet be set, they are not tested here. */ dmr2 = cpu_state.sprs[SPR_DMR2]; counter0_enabled = SPR_DMR2_WCE0 == (dmr2 & SPR_DMR2_WCE0); counter1_enabled = SPR_DMR2_WCE1 == (dmr2 & SPR_DMR2_WCE1); if (counter0_enabled || counter1_enabled) { short int counter0 = cpu_state.sprs[SPR_DWCR0] & SPR_DWCR_COUNT; short int counter1 = cpu_state.sprs[SPR_DWCR1] & SPR_DWCR_COUNT; for (i = 0; i < MAX_WATCHPOINTS - 2; i++) { int use_counter_0 = (dmr2 >> (SPR_DMR2_AWTC_OFF + i) & 1) != 1; if (use_counter_0) { if (counter0_enabled && wp[i]) { counter0++; } } else { if (counter1_enabled && wp[i]) { counter1++; } } } cpu_state.sprs[SPR_DWCR0] &= ~SPR_DWCR_COUNT; cpu_state.sprs[SPR_DWCR0] |= counter0; cpu_state.sprs[SPR_DWCR1] &= ~SPR_DWCR_COUNT; cpu_state.sprs[SPR_DWCR1] |= counter1; } /* Sort out the last two matchpoints, which depend on counters IMPORTANT..... The architecture manual appears to be wrong, in suggesting that watchpoint 8 chains with watchpoint 3 and watchpoint 9 chains with watchpoint 7. The Verilog source code suggests watchpoint 8 chains with watchpoint 7 and watchpoint 9 chains with watchpoint 8. */ counter0_matched = ((cpu_state.sprs[SPR_DWCR0] & SPR_DWCR_COUNT) == ((cpu_state.sprs[SPR_DWCR0] & SPR_DWCR_MATCH) >> SPR_DWCR_MATCH_OFF)); counter1_matched = ((cpu_state.sprs[SPR_DWCR1] & SPR_DWCR_COUNT) == ((cpu_state.sprs[SPR_DWCR1] & SPR_DWCR_MATCH) >> SPR_DWCR_MATCH_OFF)); switch (dmr1 & SPR_DMR1_CW8) { case 0: wp[8] = counter0_matched; break; case SPR_DMR1_CW8_AND: wp[8] = counter0_matched && wp[7]; break; case SPR_DMR1_CW8_OR: wp[8] = counter0_matched || wp[7]; break; case SPR_DMR1_CW8: printf ("SPR DMR1_CW8=11 reserved\n"); break; } switch (dmr1 & SPR_DMR1_CW9) { case 0: wp[9] = counter1_matched; break; case SPR_DMR1_CW9_AND: wp[9] = counter1_matched && wp[8]; break; case SPR_DMR1_CW9_OR: wp[9] = counter1_matched || wp[8]; break; case SPR_DMR1_CW9: printf ("SPR DMR1_CW9=11 reserved\n"); break; } /* Now work out which watchpoints (if any) have caused a breakpoint and update the breakpoint status bits */ breakpoint_found = 0; for (i = 0; i < MAX_WATCHPOINTS; i++) { if (1 == (dmr2 >> (SPR_DMR2_WGB_OFF + i) & 1)) { if (wp[i]) { dmr2 |= 1 << (SPR_DMR2_WBS_OFF + i); breakpoint_found = 1; } } } cpu_state.sprs[SPR_DMR2] = dmr2; return breakpoint_found; } /* calculate_watchpoints () */ /*---------------------------------------------------------------------------*/ /*!Get a JTAG register Action depends on which scan chain is currently active. @param[in] address Address on the scan chain @param[out] data Where to put the result of the read @return An error code (including ERR_NONE) if there is no error */ /*---------------------------------------------------------------------------*/ int debug_get_register (oraddr_t address, uorreg_t *data) { int err = ERR_NONE; switch (current_scan_chain) { case JTAG_CHAIN_DEBUG_UNIT: *data = mfspr (address); break; case JTAG_CHAIN_TRACE: err = JTAG_PROXY_INVALID_CHAIN; /* Not yet implemented */ break; case JTAG_CHAIN_DEVELOPMENT: err = get_devint_reg (address, (unsigned long *)data); break; case JTAG_CHAIN_WISHBONE: err = debug_get_mem (address, data); break; default: err = JTAG_PROXY_INVALID_CHAIN; } return err; } /* debug_get_register () */ /*---------------------------------------------------------------------------*/ /*!Set a JTAG register Action depends on which scan chain is currently active. @param[in] address Address on the scan chain @param[out] data Data to set @return An error code (including ERR_NONE) if there is no error */ /*---------------------------------------------------------------------------*/ int debug_set_register (oraddr_t address, uorreg_t data) { int err = ERR_NONE; switch (current_scan_chain) { case JTAG_CHAIN_DEBUG_UNIT: mtspr (address, data); break; case JTAG_CHAIN_TRACE: err = JTAG_PROXY_ACCESS_EXCEPTION; /* Not yet implemented */ break; case JTAG_CHAIN_DEVELOPMENT: err = set_devint_reg (address, data); break; case JTAG_CHAIN_WISHBONE: err = debug_set_mem (address, data); break; default: err = JTAG_PROXY_INVALID_CHAIN; } return err; } /* debug_set_register () */ /*---------------------------------------------------------------------------*/ /*!Set the JTAG chain Only permit chains we support. Currently TRACE is not implemented. @param[in] chain Chain to be set as current @return An error code (including ERR_NONE) if there is no error */ /*---------------------------------------------------------------------------*/ int debug_set_chain (enum debug_scan_chain_ids chain) { switch (chain) { case JTAG_CHAIN_DEBUG_UNIT: case JTAG_CHAIN_DEVELOPMENT: case JTAG_CHAIN_WISHBONE: current_scan_chain = chain; break; case JTAG_CHAIN_TRACE: return JTAG_PROXY_INVALID_CHAIN; /* Not yet implemented */ default: return JTAG_PROXY_INVALID_CHAIN; /* All other chains not implemented */ } return ERR_NONE; } /* debug_set_chain() */ /*---------------------------------------------------------------------------*/ /*!Get a development interface register No side effects on get - just return the register @param[in] address The register to get @param[out] data Where to put the result @return An error code (including ERR_NONE) if there is no error */ /*---------------------------------------------------------------------------*/ static int get_devint_reg (enum development_interface_address_space address, unsigned long *data) { int err = ERR_NONE; if (address <= DEVELOPINT_MAX) { *data = development[address]; } else { err = JTAG_PROXY_INVALID_ADDRESS; } return err; } /* get_devint_reg () */ /*---------------------------------------------------------------------------*/ /*!Set a development interface register Sets the value of the corresponding register. Only RISC_OP has any side-effects. The others just store the value, so it can be read back. @param[in] address The register to set @param[in] data The data to set @return An error code (including ERR_NONE) if there is no error */ /*---------------------------------------------------------------------------*/ static int set_devint_reg (enum development_interface_address_space address, unsigned long data) { int err = ERR_NONE; if (DEVELOPINT_RISCOP == address) { int old_value = (development[DEVELOPINT_RISCOP] & RISCOP_RESET) != 0; development[DEVELOPINT_RISCOP] = data; in_reset = ((data & RISCOP_RESET) != 0); /* Reset the cpu on the negative edge of RESET */ if (old_value && !in_reset) { sim_reset (); /* Reset all units */ } set_stall_state ((development[DEVELOPINT_RISCOP] & RISCOP_STALL) != 0); } else if (address <= DEVELOPINT_MAX) { development[address] = data; } else { err = JTAG_PROXY_INVALID_ADDRESS; } return err; } /* set_devint_reg() */ /*---------------------------------------------------------------------------*/ /*!Read from main bus @param[in] address Address to read from @param[out] data Where to put the result @return An error code (including ERR_NONE) if there is no error */ /*---------------------------------------------------------------------------*/ static int debug_get_mem (oraddr_t address, uorreg_t *data) { int err = ERR_NONE; if (!verify_memoryarea (address)) { err = JTAG_PROXY_INVALID_ADDRESS; } else { *data = eval_direct32 (address, 0, 0); } return err; } /* debug_get_mem () */ /*---------------------------------------------------------------------------*/ /*!Write to main bus @param[in] address Address to write to @param[out] data Data to write @return An error code (including ERR_NONE) if there is no error */ /*---------------------------------------------------------------------------*/ static int debug_set_mem (oraddr_t address, uint32_t data) { int err = ERR_NONE; if (!verify_memoryarea (address)) { err = JTAG_PROXY_INVALID_ADDRESS; } else { // circumvent the read-only check usually done for mem accesses // data is in host order, because that's what set_direct32 needs set_program32 (address, data); } return err; } /* debug_set_mem () */ /*---------------------------------------------------------------------------*/ /*!See if an exception should be ignored @param[in] except The exception to consider @return Non-zero if the exception should be ignored */ /*---------------------------------------------------------------------------*/ int debug_ignore_exception (unsigned long except) { int result = 0; unsigned long dsr = cpu_state.sprs[SPR_DSR]; switch (except) { case EXCEPT_RESET: result = (dsr & SPR_DSR_RSTE); break; case EXCEPT_BUSERR: result = (dsr & SPR_DSR_BUSEE); break; case EXCEPT_DPF: result = (dsr & SPR_DSR_DPFE); break; case EXCEPT_IPF: result = (dsr & SPR_DSR_IPFE); break; case EXCEPT_TICK: result = (dsr & SPR_DSR_TTE); break; case EXCEPT_ALIGN: result = (dsr & SPR_DSR_AE); break; case EXCEPT_ILLEGAL: result = (dsr & SPR_DSR_IIE); break; case EXCEPT_INT: result = (dsr & SPR_DSR_IE); break; case EXCEPT_DTLBMISS: result = (dsr & SPR_DSR_DME); break; case EXCEPT_ITLBMISS: result = (dsr & SPR_DSR_IME); break; case EXCEPT_RANGE: result = (dsr & SPR_DSR_RE); break; case EXCEPT_SYSCALL: result = (dsr & SPR_DSR_SCE); break; case EXCEPT_TRAP: result = (dsr & SPR_DSR_TE); break; default: break; } cpu_state.sprs[SPR_DRR] |= result; set_stall_state (result != 0); /* Notify RSP if enabled. TODO: Should we actually notify ALL exceptions, not just those maked in the DSR? */ if (config.debug.rsp_enabled && (0 != result)) { rsp_exception (except); } return (result != 0); } /* debug_ignore_exception () */ /*---------------------------------------------------------------------------*/ /*!Enable or disable the debug unit Set the corresponding field in the UPR @param[in] val The value to use @param[in] dat The config data structure (not used here) */ /*---------------------------------------------------------------------------*/ static void debug_enabled (union param_val val, void *dat) { if (val.int_val) { cpu_state.sprs[SPR_UPR] |= SPR_UPR_DUP; } else { cpu_state.sprs[SPR_UPR] &= ~SPR_UPR_DUP; } config.debug.enabled = val.int_val; } /* debug_enabled() */ /*---------------------------------------------------------------------------*/ /*!Enable or disable the legacy GDB interface to the debug unit This is for use with the OpenRISC Remote JTAG protocol (now deprecated). It may only be specified if the RSP interface is not specified. If both are specified, the RSP will be used. @param[in] val The value to use @param[in] dat The config data structure (not used here) */ /*---------------------------------------------------------------------------*/ static void debug_gdb_enabled (union param_val val, void *dat) { config.debug.gdb_enabled = val.int_val; if (config.debug.gdb_enabled && config.debug.rsp_enabled) { fprintf (stderr, "WARNING. Cannot specify both legacy and RSP GDB " "interfaces: legacy interface ignored\n"); config.debug.gdb_enabled = 0; } } /* debug_gdb_enabled () */ /*---------------------------------------------------------------------------*/ /*!Enable or disable Remote Serial Protocol GDB interface to the debug unit This is the preferred interface. It may only be specified if the RSP interface is not specified. If both are specified, the RSP will be used. @param[in] val The value to use @param[in] dat The config data structure (not used here) */ /*---------------------------------------------------------------------------*/ static void debug_rsp_enabled (union param_val val, void *dat) { config.debug.rsp_enabled = val.int_val; if (config.debug.gdb_enabled && config.debug.rsp_enabled) { fprintf (stderr, "WARNING. Cannot specify both legacy and RSP GDB " "interfaces: legacy interface ignored\n"); config.debug.gdb_enabled = 0; } } /* debug_rsp_enabled () */ /*---------------------------------------------------------------------------*/ /*!Set the legacy GDB server port This is for use with the OpenRISC Remote JTAG protocol (now deprecated). Ensure the value chosen is valid. Note that 0 is permitted, meaning the connection should be to the "or1ksim" service, rather than a port. Both this and the RSP port may be specified, but only one may be enabled (see debug_gdb_enabled() and debug_rsp_enabled()). @param[in] val The value to use @param[in] dat The config data structure (not used here) */ /*---------------------------------------------------------------------------*/ static void debug_server_port (union param_val val, void *dat) { if ((val.int_val < 0) || (val.int_val > 65535)) { fprintf (stderr, "Warning: invalid legacy GDB port specified: ignored\n"); } else { config.debug.server_port = val.int_val; } } /* debug_server_port() */ /*---------------------------------------------------------------------------*/ /*!Set the Remote Serial Protocol GDB server port This is for use with the RSP, which is now the preferred interface. Ensure the value chosen is valid. Note that 0 is permitted, meaning the connection should be to the "or1ksim-rsp" service, rather than a port. Both this and the legacy port may be specified, but only one may be enabled (see debug_gdb_enabled() and debug_rsp_enabled()). @param[in] val The value to use @param[in] dat The config data structure (not used here) */ /*---------------------------------------------------------------------------*/ static void debug_rsp_port (union param_val val, void *dat) { if ((val.int_val < 0) || (val.int_val > 65535)) { fprintf (stderr, "Warning: invalid RSP GDB port specified: ignored\n"); } else { config.debug.rsp_port = val.int_val; } } /* debug_rsp_port() */ /*---------------------------------------------------------------------------*/ /*!Set the VAPI ID for the debug unit @param[in] val The value to use @param[in] dat The config data structure (not used here) */ /*---------------------------------------------------------------------------*/ static void debug_vapi_id (union param_val val, void *dat) { config.debug.vapi_id = val.int_val; } /* debug_vapi_id () */ /*---------------------------------------------------------------------------*/ /*!Register the configuration functions for the debug unit */ /*---------------------------------------------------------------------------*/ void reg_debug_sec () { struct config_section *sec = reg_config_sec ("debug", NULL, NULL); reg_config_param (sec, "enabled", paramt_int, debug_enabled); reg_config_param (sec, "gdb_enabled", paramt_int, debug_gdb_enabled); reg_config_param (sec, "rsp_enabled", paramt_int, debug_rsp_enabled); reg_config_param (sec, "server_port", paramt_int, debug_server_port); reg_config_param (sec, "rsp_port", paramt_int, debug_rsp_port); reg_config_param (sec, "vapi_id", paramt_int, debug_vapi_id); } /* reg_debug_sec () */
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