Cortex-A8: no exit() calls, add missing v7-A init

Eventually there should be a v7a init routine, but for now
all that is inlined here.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

diff --git a/src/target/cortex_a8.c b/src/target/cortex_a8.c
index f099be94485e880519959800178560442afd3390..f4b5550f7f9baa6bf90896c1771c064a10bda116 100644 (file)
--- a/src/target/cortex_a8.c
+++ b/src/target/cortex_a8.c
@@ -984,7 +984,7 @@ static int cortex_a8_set_breakpoint(struct target *target,
                if (brp_i >= cortex_a8->brp_num)
                {
                        LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
-                       exit(-1);
+                       return ERROR_FAIL;
                }
                breakpoint->set = brp_i + 1;
                if (breakpoint->length == 2)
@@ -1180,19 +1180,14 @@ static int cortex_a8_read_memory(struct target *target, uint32_t address,
 {
        struct armv7a_common *armv7a = target_to_armv7a(target);
        struct swjdp_common *swjdp = &armv7a->swjdp_info;
-
-       int retval = ERROR_OK;
-
-       /* sanitize arguments */
-       if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer))
-               return ERROR_INVALID_ARGUMENTS;
+       int retval = ERROR_INVALID_ARGUMENTS;
 
        /* cortex_a8 handles unaligned memory access */
 
 // ??? dap_ap_select(swjdp, swjdp_memoryap);
 
-       switch (size)
-       {
+       if (count && buffer) {
+               switch (size) {
                case 4:
                        retval = mem_ap_read_buf_u32(swjdp, buffer, 4 * count, address);
                        break;
@@ -1202,9 +1197,7 @@ static int cortex_a8_read_memory(struct target *target, uint32_t address,
                case 1:
                        retval = mem_ap_read_buf_u8(swjdp, buffer, count, address);
                        break;
-               default:
-                       LOG_ERROR("BUG: we shouldn't get here");
-                       exit(-1);
+               }
        }
 
        return retval;
@@ -1215,17 +1208,12 @@ int cortex_a8_write_memory(struct target *target, uint32_t address,
 {
        struct armv7a_common *armv7a = target_to_armv7a(target);
        struct swjdp_common *swjdp = &armv7a->swjdp_info;
-
-       int retval;
-
-       /* sanitize arguments */
-       if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer))
-               return ERROR_INVALID_ARGUMENTS;
+       int retval = ERROR_INVALID_ARGUMENTS;
 
 // ??? dap_ap_select(swjdp, swjdp_memoryap);
 
-       switch (size)
-       {
+       if (count && buffer) {
+               switch (size) {
                case 4:
                        retval = mem_ap_write_buf_u32(swjdp, buffer, 4 * count, address);
                        break;
@@ -1235,12 +1223,10 @@ int cortex_a8_write_memory(struct target *target, uint32_t address,
                case 1:
                        retval = mem_ap_write_buf_u8(swjdp, buffer, count, address);
                        break;
-               default:
-                       LOG_ERROR("BUG: we shouldn't get here");
-                       exit(-1);
+               }
        }
 
-       if (target->state == TARGET_HALTED)
+       if (retval == ERROR_OK && target->state == TARGET_HALTED)
        {
                /* The Cache handling will NOT work with MMU active, the wrong addresses will be invalidated */
                /* invalidate I-Cache */
@@ -1453,19 +1439,18 @@ static int cortex_a8_init_target(struct command_context *cmd_ctx,
 int cortex_a8_init_arch_info(struct target *target,
                struct cortex_a8_common *cortex_a8, struct jtag_tap *tap)
 {
-       struct arm *armv4_5;
-       struct armv7a_common *armv7a;
-
-       armv7a = &cortex_a8->armv7a_common;
-       armv4_5 = &armv7a->armv4_5_common;
+       struct armv7a_common *armv7a = &cortex_a8->armv7a_common;
+       struct arm *armv4_5 = &armv7a->armv4_5_common;
        struct swjdp_common *swjdp = &armv7a->swjdp_info;
 
+       /* REVISIT v7a setup should be in a v7a-specific routine */
+       armv4_5_init_arch_info(target, armv4_5);
+       armv7a->common_magic = ARMV7_COMMON_MAGIC;
+
        /* Setup struct cortex_a8_common */
        cortex_a8->common_magic = CORTEX_A8_COMMON_MAGIC;
        armv4_5->arch_info = armv7a;
 
-       armv4_5_init_arch_info(target, armv4_5);
-
        /* prepare JTAG information for the new target */
        cortex_a8->jtag_info.tap = tap;
        cortex_a8->jtag_info.scann_size = 4;