summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/target/cortex_a8.c65
1 files changed, 52 insertions, 13 deletions
diff --git a/src/target/cortex_a8.c b/src/target/cortex_a8.c
index 441c93b2..d0922232 100644
--- a/src/target/cortex_a8.c
+++ b/src/target/cortex_a8.c
@@ -182,7 +182,10 @@ static int cortex_a8_read_regs_through_mem(struct target *target, uint32_t addre
cortex_a8_dap_read_coreregister_u32(target, regfile, 0);
cortex_a8_dap_write_coreregister_u32(target, address, 0);
- cortex_a8_exec_opcode(target, ARMV4_5_STMIA(0, 0xFFFE, 0, 0), NULL);
+ retval = cortex_a8_exec_opcode(target, ARMV4_5_STMIA(0, 0xFFFE, 0, 0), NULL);
+ if (retval != ERROR_OK)
+ return retval;
+
dap_ap_select(swjdp, swjdp_memoryap);
mem_ap_read_buf_u32(swjdp, (uint8_t *)(&regfile[1]), 4*15, address);
dap_ap_select(swjdp, swjdp_debugap);
@@ -205,27 +208,37 @@ static int cortex_a8_dap_read_coreregister_u32(struct target *target,
if (reg < 15)
{
/* Rn to DCCTX, "MCR p14, 0, Rn, c0, c5, 0" 0xEE00nE15 */
- cortex_a8_exec_opcode(target,
+ retval = cortex_a8_exec_opcode(target,
ARMV4_5_MCR(14, 0, reg, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
}
else if (reg == 15)
{
/* "MOV r0, r15"; then move r0 to DCCTX */
- cortex_a8_exec_opcode(target, 0xE1A0000F, &dscr);
- cortex_a8_exec_opcode(target,
+ retval = cortex_a8_exec_opcode(target, 0xE1A0000F, &dscr);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = cortex_a8_exec_opcode(target,
ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
}
else
{
/* "MRS r0, CPSR" or "MRS r0, SPSR"
* then move r0 to DCCTX
*/
- cortex_a8_exec_opcode(target, ARMV4_5_MRS(0, reg & 1), &dscr);
- cortex_a8_exec_opcode(target,
+ retval = cortex_a8_exec_opcode(target, ARMV4_5_MRS(0, reg & 1), &dscr);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = cortex_a8_exec_opcode(target,
ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
}
/* Wait for DTRRXfull then read DTRRTX */
@@ -264,8 +277,10 @@ static int cortex_a8_dap_write_coreregister_u32(struct target *target,
{
LOG_ERROR("DSCR_DTR_RX_FULL, dscr 0x%08" PRIx32, dscr);
/* Clear DCCRX with MCR(p14, 0, Rd, c0, c5, 0), opcode 0xEE000E15 */
- cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
+ retval = cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
}
if (Rd > 17)
@@ -281,33 +296,47 @@ static int cortex_a8_dap_write_coreregister_u32(struct target *target,
if (Rd < 15)
{
/* DCCRX to Rn, "MCR p14, 0, Rn, c0, c5, 0", 0xEE00nE15 */
- cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, Rd, 0, 5, 0),
+ retval = cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, Rd, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
}
else if (Rd == 15)
{
/* DCCRX to R0, "MCR p14, 0, R0, c0, c5, 0", 0xEE000E15
* then "mov r15, r0"
*/
- cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
+ retval = cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
&dscr);
- cortex_a8_exec_opcode(target, 0xE1A0F000, &dscr);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = cortex_a8_exec_opcode(target, 0xE1A0F000, &dscr);
+ if (retval != ERROR_OK)
+ return retval;
}
else
{
/* DCCRX to R0, "MCR p14, 0, R0, c0, c5, 0", 0xEE000E15
* then "MSR CPSR_cxsf, r0" or "MSR SPSR_cxsf, r0" (all fields)
*/
- cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
+ retval = cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
&dscr);
- cortex_a8_exec_opcode(target, ARMV4_5_MSR_GP(0, 0xF, Rd & 1),
+ if (retval != ERROR_OK)
+ return retval;
+ retval = cortex_a8_exec_opcode(target, ARMV4_5_MSR_GP(0, 0xF, Rd & 1),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
/* "Prefetch flush" after modifying execution status in CPSR */
if (Rd == 16)
- cortex_a8_exec_opcode(target,
+ {
+ retval = cortex_a8_exec_opcode(target,
ARMV4_5_MCR(15, 0, 0, 7, 5, 4),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
+ }
}
return retval;
@@ -412,6 +441,8 @@ static int cortex_a8_dpm_prepare(struct arm_dpm *dpm)
a8->armv7a_common.armv4_5_common.target,
ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
}
return retval;
@@ -452,6 +483,8 @@ static int cortex_a8_instr_write_data_r0(struct arm_dpm *dpm,
a8->armv7a_common.armv4_5_common.target,
ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
/* then the opcode, taking data from R0 */
retval = cortex_a8_exec_opcode(
@@ -485,6 +518,8 @@ static int cortex_a8_instr_read_data_dcc(struct arm_dpm *dpm,
a8->armv7a_common.armv4_5_common.target,
opcode,
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
return cortex_a8_read_dcc(a8, data, &dscr);
}
@@ -502,12 +537,16 @@ static int cortex_a8_instr_read_data_r0(struct arm_dpm *dpm,
a8->armv7a_common.armv4_5_common.target,
opcode,
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
/* write R0 to DCC */
retval = cortex_a8_exec_opcode(
a8->armv7a_common.armv4_5_common.target,
ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
&dscr);
+ if (retval != ERROR_OK)
+ return retval;
return cortex_a8_read_dcc(a8, data, &dscr);
}