cortex_a: fix FTBS on ARM due to alignment issues

[openocd.git] / src / target / cortex_a.c

diff --git a/src/target/cortex_a.c b/src/target/cortex_a.c
index d9d804921f7116c127fd3e4bb00f308a66c39154..cc6ae995eae47087d3b236af99786a8313e9d11c 100644 (file)
--- a/src/target/cortex_a.c
+++ b/src/target/cortex_a.c
@@ -1949,7 +1949,7 @@ static int cortex_a8_read_apb_ab_memory(struct target *target,
        int start_byte = address & 0x3;
        struct reg *reg;
        uint32_t dscr;
-       char *tmp_buff = NULL;
+       uint32_t *tmp_buff;
        uint32_t buff32[2];
        if (target->state != TARGET_HALTED) {
                LOG_WARNING("target not halted");
@@ -1958,6 +1958,14 @@ static int cortex_a8_read_apb_ab_memory(struct target *target,
 
        total_u32 = DIV_ROUND_UP((address & 3) + total_bytes, 4);
 
+       /* Due to offset word alignment, the  buffer may not have space
+        * to read the full first and last int32 words,
+        * hence, malloc space to read into, then copy and align into the buffer.
+        */
+       tmp_buff = malloc(total_u32 * 4);
+       if (tmp_buff == NULL)
+               return ERROR_FAIL;
+
        /* Mark register R0 as dirty, as it will be used
         * for transferring the data.
         * It will be restored automatically when exiting
@@ -2009,12 +2017,6 @@ static int cortex_a8_read_apb_ab_memory(struct target *target,
                goto error_unset_dtr_r;
 
 
-       /* Due to offset word alignment, the  buffer may not have space
-        * to read the full first and last int32 words,
-        * hence, malloc space to read into, then copy and align into the buffer.
-        */
-       tmp_buff = (char *) malloc(total_u32<<2);
-
        /* The last word needs to be handled separately - read all other words in one go.
         */
        if (total_u32 > 1) {
@@ -2023,7 +2025,7 @@ static int cortex_a8_read_apb_ab_memory(struct target *target,
                 *
                 * This data is read in aligned to 32 bit boundary, hence may need shifting later.
                 */
-               retval = mem_ap_sel_read_buf_u32_noincr(swjdp, armv7a->debug_ap, (uint8_t *)tmp_buff, (total_u32-1)<<2,
+               retval = mem_ap_sel_read_buf_u32_noincr(swjdp, armv7a->debug_ap, (uint8_t *)tmp_buff, (total_u32-1) * 4,
                                                                        armv7a->debug_base + CPUDBG_DTRTX);
                if (retval != ERROR_OK)
                        goto error_unset_dtr_r;
@@ -2060,12 +2062,12 @@ static int cortex_a8_read_apb_ab_memory(struct target *target,
 
        /* Read the last word */
        retval = mem_ap_sel_read_atomic_u32(swjdp, armv7a->debug_ap,
-                               armv7a->debug_base + CPUDBG_DTRTX, (uint32_t *)&tmp_buff[(total_u32-1)<<2]);
+                               armv7a->debug_base + CPUDBG_DTRTX, &tmp_buff[total_u32 - 1]);
        if (retval != ERROR_OK)
                goto error_free_buff_r;
 
        /* Copy and align the data into the output buffer */
-       memcpy(buffer, &tmp_buff[start_byte], total_bytes);
+       memcpy(buffer, (uint8_t *)tmp_buff + start_byte, total_bytes);
 
        free(tmp_buff);
 
@@ -2746,9 +2748,9 @@ static const struct command_registration cortex_a8_command_handlers[] = {
                .chain = armv7a_command_handlers,
        },
        {
-               .name = "cortex_a8",
+               .name = "cortex_a",
                .mode = COMMAND_ANY,
-               .help = "Cortex-A8 command group",
+               .help = "Cortex-A command group",
                .usage = "",
                .chain = cortex_a8_exec_command_handlers,
        },
@@ -2756,7 +2758,8 @@ static const struct command_registration cortex_a8_command_handlers[] = {
 };
 
 struct target_type cortexa8_target = {
-       .name = "cortex_a8",
+       .name = "cortex_a",
+       .deprecated_name = "cortex_a8",
 
        .poll = cortex_a8_poll,
        .arch_state = armv7a_arch_state,
@@ -2856,7 +2859,6 @@ struct target_type cortexr4_target = {
 
        .read_memory = cortex_a8_read_memory,
        .write_memory = cortex_a8_write_memory,
-       .bulk_write_memory = cortex_a8_bulk_write_memory,
 
        .checksum_memory = arm_checksum_memory,
        .blank_check_memory = arm_blank_check_memory,