diff options
Diffstat (limited to 'src/target/arm_semihosting.c')
| -rw-r--r-- | src/target/arm_semihosting.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/src/target/arm_semihosting.c b/src/target/arm_semihosting.c index 115c7d4e..65fd1889 100644 --- a/src/target/arm_semihosting.c +++ b/src/target/arm_semihosting.c @@ -374,9 +374,34 @@ static int do_semihosting(struct target *target) } return target_call_event_callbacks(target, TARGET_EVENT_HALTED); + case 0x12: /* SYS_SYSTEM */ + /* Provide SYS_SYSTEM functionality. Uses the + * libc system command, there may be a reason *NOT* + * to use this, but as I can't think of one, I + * implemented it this way. + */ + retval = target_read_memory(target, r1, 4, 2, params); + if (retval != ERROR_OK) + return retval; + else { + uint32_t len = target_buffer_get_u32(target, params+4); + uint32_t c_ptr = target_buffer_get_u32(target, params); + uint8_t cmd[256]; + if (len > 255) { + result = -1; + arm->semihosting_errno = EINVAL; + } else { + memset(cmd, 0x0, 256); + retval = target_read_memory(target, c_ptr, 1, len, cmd); + if (retval != ERROR_OK) + return retval; + else + result = system((const char *)cmd); + } + } + break; case 0x0d: /* SYS_TMPNAM */ case 0x10: /* SYS_CLOCK */ - case 0x12: /* SYS_SYSTEM */ case 0x17: /* angel_SWIreason_EnterSVC */ case 0x30: /* SYS_ELAPSED */ case 0x31: /* SYS_TICKFREQ */ |