diff options
Diffstat (limited to 'src/target/arm7_9_common.c')
| -rw-r--r-- | src/target/arm7_9_common.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c index 825f7fac..45411c19 100644 --- a/src/target/arm7_9_common.c +++ b/src/target/arm7_9_common.c @@ -186,17 +186,33 @@ int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { if (breakpoint->length == 4) { + u32 verify = 0xffffffff; /* keep the original instruction in target endianness */ target->type->read_memory(target, breakpoint->address, 4, 1, breakpoint->orig_instr); /* write the breakpoint instruction in target endianness (arm7_9->arm_bkpt is host endian) */ target_write_u32(target, breakpoint->address, arm7_9->arm_bkpt); + + target->type->read_memory(target, breakpoint->address, 4, 1, (u8 *)&verify); + if (verify != arm7_9->arm_bkpt) + { + ERROR("Unable to set 32 bit software breakpoint at address %08x", breakpoint->address); + return ERROR_OK; + } } else { + u16 verify = 0xffff; /* keep the original instruction in target endianness */ target->type->read_memory(target, breakpoint->address, 2, 1, breakpoint->orig_instr); /* write the breakpoint instruction in target endianness (arm7_9->thumb_bkpt is host endian) */ target_write_u16(target, breakpoint->address, arm7_9->thumb_bkpt); + + target->type->read_memory(target, breakpoint->address, 2, 1, (u8 *)&verify); + if (verify != arm7_9->thumb_bkpt) + { + ERROR("Unable to set thumb software breakpoint at address %08x", breakpoint->address); + return ERROR_OK; + } } breakpoint->set = 1; } @@ -1914,7 +1930,7 @@ int arm7_9_read_memory(struct target_s *target, u32 address, u32 size, u32 count if ((retval = jtag_execute_queue()) != ERROR_OK) { ERROR("JTAG error while reading cpsr"); - exit(-1); + return ERROR_TARGET_DATA_ABORT; } if (((cpsr & 0x1f) == ARMV4_5_MODE_ABT) && (armv4_5->core_mode != ARMV4_5_MODE_ABT)) @@ -1943,7 +1959,9 @@ int arm7_9_write_memory(struct target_s *target, u32 address, u32 size, u32 coun int retval; int last_reg = 0; +#ifdef _DEBUG_ARM7_9_ DEBUG("address: 0x%8.8x, size: 0x%8.8x, count: 0x%8.8x", address, size, count); +#endif if (target->state != TARGET_HALTED) { @@ -2079,7 +2097,7 @@ int arm7_9_write_memory(struct target_s *target, u32 address, u32 size, u32 coun if ((retval = jtag_execute_queue()) != ERROR_OK) { ERROR("JTAG error while reading cpsr"); - exit(-1); + return ERROR_TARGET_DATA_ABORT; } if (((cpsr & 0x1f) == ARMV4_5_MODE_ABT) && (armv4_5->core_mode != ARMV4_5_MODE_ABT)) |