diff options
Diffstat (limited to 'src/target/cortex_m3.c')
| -rw-r--r-- | src/target/cortex_m3.c | 44 |
1 files changed, 33 insertions, 11 deletions
diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c index d6090f55..69398904 100644 --- 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; |