mem_ap_read_u32 error propagation

[openocd.git] / src / target / cortex_m3.c

diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c
index d6090f55b98b90f46c7ed04b32623fc433bc4d79..6939890460895335e731b9a595505fbce97cad4e 100644 (file)
--- a/src/target/cortex_m3.c
+++ b/src/target/cortex_m3.c
@@ -68,7 +68,9 @@ static int cortexm3_dap_read_coreregister_u32(struct adiv5_dap *swjdp,
        /* because the DCB_DCRDR is used for the emulated dcc channel
         * we have to save/restore the DCB_DCRDR when used */
 
-       mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
+       retval = mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
+       if (retval != ERROR_OK)
+               return retval;
 
        /* mem_ap_write_u32(swjdp, DCB_DCRSR, regnum); */
        retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0);
@@ -107,7 +109,9 @@ static int cortexm3_dap_write_coreregister_u32(struct adiv5_dap *swjdp,
        /* because the DCB_DCRDR is used for the emulated dcc channel
         * we have to save/restore the DCB_DCRDR when used */
 
-       mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
+       retval = mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
+       if (retval != ERROR_OK)
+               return retval;
 
        /* mem_ap_write_u32(swjdp, DCB_DCRDR, core_regs[i]); */
        retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0);
@@ -297,33 +301,51 @@ static int cortex_m3_examine_exception_reason(struct target *target)
        struct adiv5_dap *swjdp = &armv7m->dap;
        int retval;
 
-       mem_ap_read_u32(swjdp, NVIC_SHCSR, &shcsr);
+       retval = mem_ap_read_u32(swjdp, NVIC_SHCSR, &shcsr);
+       if (retval != ERROR_OK)
+               return retval;
        switch (armv7m->exception_number)
        {
                case 2: /* NMI */
                        break;
                case 3: /* Hard Fault */
-                       mem_ap_read_atomic_u32(swjdp, NVIC_HFSR, &except_sr);
+                       retval = mem_ap_read_atomic_u32(swjdp, NVIC_HFSR, &except_sr);
+                       if (retval != ERROR_OK)
+                               return retval;
                        if (except_sr & 0x40000000)
                        {
-                               mem_ap_read_u32(swjdp, NVIC_CFSR, &cfsr);
+                               retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &cfsr);
+                               if (retval != ERROR_OK)
+                                       return retval;
                        }
                        break;
                case 4: /* Memory Management */
-                       mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
-                       mem_ap_read_u32(swjdp, NVIC_MMFAR, &except_ar);
+                       retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
+                       if (retval != ERROR_OK)
+                               return retval;
+                       retval = mem_ap_read_u32(swjdp, NVIC_MMFAR, &except_ar);
+                       if (retval != ERROR_OK)
+                               return retval;
                        break;
                case 5: /* Bus Fault */
-                       mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
-                       mem_ap_read_u32(swjdp, NVIC_BFAR, &except_ar);
+                       retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
+                       if (retval != ERROR_OK)
+                               return retval;
+                       retval = mem_ap_read_u32(swjdp, NVIC_BFAR, &except_ar);
+                       if (retval != ERROR_OK)
+                               return retval;
                        break;
                case 6: /* Usage Fault */
-                       mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
+                       retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr);
+                       if (retval != ERROR_OK)
+                               return retval;
                        break;
                case 11:        /* SVCall */
                        break;
                case 12:        /* Debug Monitor */
-                       mem_ap_read_u32(swjdp, NVIC_DFSR, &except_sr);
+                       retval = mem_ap_read_u32(swjdp, NVIC_DFSR, &except_sr);
+                       if (retval != ERROR_OK)
+                               return retval;
                        break;
                case 14:        /* PendSV */
                        break;