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target/xtensa: avoid IHI for writes to non-executable memory
[openocd.git] / src / target / xscale.c
diff --git a/src/target/xscale.c b/src/target/xscale.c
index dd383b6e46d50ef831ab23562d637ca09df9411e..fbf43516d02fcbb446287ee7939c51c18974630e 100644 (file)
--- a/src/target/xscale.c
+++ b/src/target/xscale.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 /***************************************************************************
  *   Copyright (C) 2006, 2007 by Dominic Rath                              *
  *   Dominic.Rath@gmx.de                                                   *
@@ -7,19 +9,6 @@
  *                                                                         *
  *   Copyright (C) 2009 Michael Schwingen                                  *
  *   michael@schwingen.org                                                 *
- *                                                                         *
- *   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, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
@@ -1087,7 +1076,7 @@ static void xscale_enable_watchpoints(struct target *target)
        struct watchpoint *watchpoint = target->watchpoints;
 
        while (watchpoint) {
-               if (watchpoint->set == 0)
+               if (!watchpoint->is_set)
                        xscale_set_watchpoint(target, watchpoint);
                watchpoint = watchpoint->next;
        }
@@ -1099,7 +1088,7 @@ static void xscale_enable_breakpoints(struct target *target)
 
        /* set any pending breakpoints */
        while (breakpoint) {
-               if (breakpoint->set == 0)
+               if (!breakpoint->is_set)
                        xscale_set_breakpoint(target, breakpoint);
                breakpoint = breakpoint->next;
        }
@@ -1129,7 +1118,7 @@ static int xscale_resume(struct target *target, int current,
        LOG_DEBUG("-");
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -1393,7 +1382,7 @@ static int xscale_step(struct target *target, int current,
        int retval;
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -1506,7 +1495,7 @@ static int xscale_deassert_reset(struct target *target)
        /* mark all hardware breakpoints as unset */
        while (breakpoint) {
                if (breakpoint->type == BKPT_HARD)
-                       breakpoint->set = 0;
+                       breakpoint->is_set = false;
                breakpoint = breakpoint->next;
        }
 
@@ -1643,7 +1632,7 @@ static int xscale_full_context(struct target *target)
        LOG_DEBUG("-");
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -1716,7 +1705,7 @@ static int xscale_restore_banked(struct target *target)
        int i, j;
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -1792,7 +1781,7 @@ static int xscale_read_memory(struct target *target, target_addr_t address,
                count);
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -1891,7 +1880,7 @@ static int xscale_write_memory(struct target *target, target_addr_t address,
                count);
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -2084,11 +2073,11 @@ static int xscale_set_breakpoint(struct target *target,
        struct xscale_common *xscale = target_to_xscale(target);
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if (breakpoint->set) {
+       if (breakpoint->is_set) {
                LOG_WARNING("breakpoint already set");
                return ERROR_OK;
        }
@@ -2098,11 +2087,13 @@ static int xscale_set_breakpoint(struct target *target,
                if (!xscale->ibcr0_used) {
                        xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR0], value);
                        xscale->ibcr0_used = 1;
-                       breakpoint->set = 1;    /* breakpoint set on first breakpoint register */
+                       /* breakpoint set on first breakpoint register */
+                       breakpoint_hw_set(breakpoint, 0);
                } else if (!xscale->ibcr1_used) {
                        xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR1], value);
                        xscale->ibcr1_used = 1;
-                       breakpoint->set = 2;    /* breakpoint set on second breakpoint register */
+                       /* breakpoint set on second breakpoint register */
+                       breakpoint_hw_set(breakpoint, 1);
                } else {/* bug: availability previously verified in xscale_add_breakpoint() */
                        LOG_ERROR("BUG: no hardware comparator available");
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
@@ -2133,7 +2124,7 @@ static int xscale_set_breakpoint(struct target *target,
                        if (retval != ERROR_OK)
                                return retval;
                }
-               breakpoint->set = 1;
+               breakpoint->is_set = true;
 
                xscale_send_u32(target, 0x50);  /* clean dcache */
                xscale_send_u32(target, xscale->cache_clean_address);
@@ -2172,24 +2163,24 @@ static int xscale_unset_breakpoint(struct target *target,
        struct xscale_common *xscale = target_to_xscale(target);
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if (!breakpoint->set) {
+       if (!breakpoint->is_set) {
                LOG_WARNING("breakpoint not set");
                return ERROR_OK;
        }
 
        if (breakpoint->type == BKPT_HARD) {
-               if (breakpoint->set == 1) {
+               if (breakpoint->number == 0) {
                        xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR0], 0x0);
                        xscale->ibcr0_used = 0;
-               } else if (breakpoint->set == 2) {
+               } else if (breakpoint->number == 1) {
                        xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_IBCR1], 0x0);
                        xscale->ibcr1_used = 0;
                }
-               breakpoint->set = 0;
+               breakpoint->is_set = false;
        } else {
                /* restore original instruction (kept in target endianness) */
                if (breakpoint->length == 4) {
@@ -2203,7 +2194,7 @@ static int xscale_unset_breakpoint(struct target *target,
                        if (retval != ERROR_OK)
                                return retval;
                }
-               breakpoint->set = 0;
+               breakpoint->is_set = false;
 
                xscale_send_u32(target, 0x50);  /* clean dcache */
                xscale_send_u32(target, xscale->cache_clean_address);
@@ -2219,11 +2210,11 @@ static int xscale_remove_breakpoint(struct target *target, struct breakpoint *br
        struct xscale_common *xscale = target_to_xscale(target);
 
        if (target->state != TARGET_HALTED) {
-               LOG_ERROR("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if (breakpoint->set)
+       if (breakpoint->is_set)
                xscale_unset_breakpoint(target, breakpoint);
 
        if (breakpoint->type == BKPT_HARD)
@@ -2241,7 +2232,7 @@ static int xscale_set_watchpoint(struct target *target,
        uint32_t dbcon_value = buf_get_u32(dbcon->value, 0, 32);
 
        if (target->state != TARGET_HALTED) {
-               LOG_ERROR("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -2279,13 +2270,13 @@ static int xscale_set_watchpoint(struct target *target,
                xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_DBR0], watchpoint->address);
                dbcon_value |= enable;
                xscale_set_reg_u32(dbcon, dbcon_value);
-               watchpoint->set = 1;
+               watchpoint_set(watchpoint, 0);
                xscale->dbr0_used = 1;
        } else if (!xscale->dbr1_used) {
                xscale_set_reg_u32(&xscale->reg_cache->reg_list[XSCALE_DBR1], watchpoint->address);
                dbcon_value |= enable << 2;
                xscale_set_reg_u32(dbcon, dbcon_value);
-               watchpoint->set = 2;
+               watchpoint_set(watchpoint, 1);
                xscale->dbr1_used = 1;
        } else {
                LOG_ERROR("BUG: no hardware comparator available");
@@ -2305,7 +2296,7 @@ static int xscale_add_watchpoint(struct target *target,
                return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
 
-       if (watchpoint->value)
+       if (watchpoint->mask != WATCHPOINT_IGNORE_DATA_VALUE_MASK)
                LOG_WARNING("xscale does not support value, mask arguments; ignoring");
 
        /* check that length is a power of two */
@@ -2345,16 +2336,16 @@ static int xscale_unset_watchpoint(struct target *target,
        uint32_t dbcon_value = buf_get_u32(dbcon->value, 0, 32);
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if (!watchpoint->set) {
+       if (!watchpoint->is_set) {
                LOG_WARNING("breakpoint not set");
                return ERROR_OK;
        }
 
-       if (watchpoint->set == 1) {
+       if (watchpoint->number == 0) {
                if (watchpoint->length > 4) {
                        dbcon_value &= ~0x103;  /* clear DBCON[M] as well */
                        xscale->dbr1_used = 0;  /* DBR1 was used for mask */
@@ -2363,12 +2354,12 @@ static int xscale_unset_watchpoint(struct target *target,
 
                xscale_set_reg_u32(dbcon, dbcon_value);
                xscale->dbr0_used = 0;
-       } else if (watchpoint->set == 2) {
+       } else if (watchpoint->number == 1) {
                dbcon_value &= ~0xc;
                xscale_set_reg_u32(dbcon, dbcon_value);
                xscale->dbr1_used = 0;
        }
-       watchpoint->set = 0;
+       watchpoint->is_set = false;
 
        return ERROR_OK;
 }
@@ -2378,11 +2369,11 @@ static int xscale_remove_watchpoint(struct target *target, struct watchpoint *wa
        struct xscale_common *xscale = target_to_xscale(target);
 
        if (target->state != TARGET_HALTED) {
-               LOG_ERROR("target not halted");
+               LOG_TARGET_ERROR(target, "not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if (watchpoint->set)
+       if (watchpoint->is_set)
                xscale_unset_watchpoint(target, watchpoint);
 
        if (watchpoint->length > 4)
@@ -2499,7 +2490,7 @@ static int xscale_read_trace(struct target *target)
        unsigned int num_checkpoints = 0;
 
        if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target must be stopped to read trace data");
+               LOG_TARGET_ERROR(target, "must be stopped to read trace data");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -3140,8 +3131,8 @@ static int xscale_mmu(struct target *target, int *enabled)
        struct xscale_common *xscale = target_to_xscale(target);
 
        if (target->state != TARGET_HALTED) {
-               LOG_ERROR("Target not halted");
-               return ERROR_TARGET_INVALID;
+               LOG_TARGET_ERROR(target, "not halted");
+               return ERROR_TARGET_NOT_HALTED;
        }
        *enabled = xscale->armv4_5_mmu.mmu_enabled;
        return ERROR_OK;
@@ -3158,8 +3149,8 @@ COMMAND_HANDLER(xscale_handle_mmu_command)
                return retval;
 
        if (target->state != TARGET_HALTED) {
-               command_print(CMD, "target must be stopped for \"%s\" command", CMD_NAME);
-               return ERROR_OK;
+               command_print(CMD, "Error: target must be stopped for \"%s\" command", CMD_NAME);
+               return ERROR_TARGET_NOT_HALTED;
        }
 
        if (CMD_ARGC >= 1) {
@@ -3188,8 +3179,8 @@ COMMAND_HANDLER(xscale_handle_idcache_command)
                return retval;
 
        if (target->state != TARGET_HALTED) {
-               command_print(CMD, "target must be stopped for \"%s\" command", CMD_NAME);
-               return ERROR_OK;
+               command_print(CMD, "Error: target must be stopped for \"%s\" command", CMD_NAME);
+               return ERROR_TARGET_NOT_HALTED;
        }
 
        bool icache = false;
@@ -3356,8 +3347,8 @@ COMMAND_HANDLER(xscale_handle_trace_buffer_command)
                return retval;
 
        if (target->state != TARGET_HALTED) {
-               command_print(CMD, "target must be stopped for \"%s\" command", CMD_NAME);
-               return ERROR_OK;
+               command_print(CMD, "Error: target must be stopped for \"%s\" command", CMD_NAME);
+               return ERROR_TARGET_NOT_HALTED;
        }
 
        if (CMD_ARGC >= 1) {
@@ -3460,8 +3451,8 @@ COMMAND_HANDLER(xscale_handle_dump_trace_command)
                return retval;
 
        if (target->state != TARGET_HALTED) {
-               command_print(CMD, "target must be stopped for \"%s\" command", CMD_NAME);
-               return ERROR_OK;
+               command_print(CMD, "Error: target must be stopped for \"%s\" command", CMD_NAME);
+               return ERROR_TARGET_NOT_HALTED;
        }
 
        if (CMD_ARGC < 1)
@@ -3523,8 +3514,8 @@ COMMAND_HANDLER(xscale_handle_cp15)
                return retval;
 
        if (target->state != TARGET_HALTED) {
-               command_print(CMD, "target must be stopped for \"%s\" command", CMD_NAME);
-               return ERROR_OK;
+               command_print(CMD, "Error: target must be stopped for \"%s\" command", CMD_NAME);
+               return ERROR_TARGET_NOT_HALTED;
        }
        uint32_t reg_no = 0;
        struct reg *reg = NULL;
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