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Diffstat (limited to 'src/target/nds32.c')
-rw-r--r--src/target/nds32.c320
1 files changed, 315 insertions, 5 deletions
diff --git a/src/target/nds32.c b/src/target/nds32.c
index 95a249d..c4bd63a 100644
--- a/src/target/nds32.c
+++ b/src/target/nds32.c
@@ -1645,6 +1645,10 @@ int nds32_init_arch_info(struct target *target, struct nds32 *nds32)
nds32->keep_target_edm_ctl = false;
nds32->word_access_mem = false;
nds32->virtual_hosting = false;
+ nds32->hit_syscall = false;
+ nds32->active_syscall_id = NDS32_SYSCALL_UNDEFINED;
+ nds32->virtual_hosting_errno = 0;
+ nds32->virtual_hosting_ctrl_c = false;
nds32_reg_init();
@@ -1772,13 +1776,24 @@ int nds32_step(struct target *target, int current,
ir14_value &= ~(0x1 << 31);
nds32_set_mapped_reg(nds32, IR14, ir14_value);
+ /* check hit_syscall before leave_debug_state() because
+ * leave_debug_state() may clear hit_syscall flag */
+ bool no_step = false;
+ if (nds32->hit_syscall)
+ /* step after hit_syscall should be ignored because
+ * leave_debug_state will step implicitly to skip the
+ * syscall */
+ no_step = true;
+
/********* TODO: maybe create another function to handle this part */
CHECK_RETVAL(nds32->leave_debug_state(nds32, true));
CHECK_RETVAL(target_call_event_callbacks(target, TARGET_EVENT_RESUMED));
- struct aice_port_s *aice = target_to_aice(target);
- if (ERROR_OK != aice_step(aice))
- return ERROR_FAIL;
+ if (no_step == false) {
+ struct aice_port_s *aice = target_to_aice(target);
+ if (ERROR_OK != aice_step(aice))
+ return ERROR_FAIL;
+ }
/* save state */
CHECK_RETVAL(nds32->enter_debug_state(nds32, true));
@@ -1878,6 +1893,12 @@ int nds32_examine_debug_reason(struct nds32 *nds32)
uint32_t reason;
struct target *target = nds32->target;
+ if (nds32->hit_syscall == true) {
+ LOG_DEBUG("Hit syscall breakpoint");
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ return ERROR_OK;
+ }
+
nds32->get_debug_reason(nds32, &reason);
LOG_DEBUG("nds32 examines debug reason: %s", nds32_debug_type_name[reason]);
@@ -2110,8 +2131,11 @@ int nds32_resume(struct target *target, int current,
CHECK_RETVAL(nds32->leave_debug_state(nds32, true));
CHECK_RETVAL(target_call_event_callbacks(target, TARGET_EVENT_RESUMED));
- struct aice_port_s *aice = target_to_aice(target);
- aice_run(aice);
+ if (nds32->virtual_hosting_ctrl_c == false) {
+ struct aice_port_s *aice = target_to_aice(target);
+ aice_run(aice);
+ } else
+ nds32->virtual_hosting_ctrl_c = false;
target->debug_reason = DBG_REASON_NOTHALTED;
if (!debug_execution)
@@ -2239,6 +2263,292 @@ int nds32_init(struct nds32 *nds32)
return ERROR_OK;
}
+int nds32_get_gdb_fileio_info(struct target *target, struct gdb_fileio_info *fileio_info)
+{
+ /* fill syscall parameters to file-I/O info */
+ if (NULL == fileio_info) {
+ LOG_ERROR("Target has not initial file-I/O data structure");
+ return ERROR_FAIL;
+ }
+
+ struct nds32 *nds32 = target_to_nds32(target);
+ uint32_t value_ir6;
+ uint32_t syscall_id;
+
+ if (nds32->hit_syscall == false)
+ return ERROR_FAIL;
+
+ nds32_get_mapped_reg(nds32, IR6, &value_ir6);
+ syscall_id = (value_ir6 >> 16) & 0x7FFF;
+ nds32->active_syscall_id = syscall_id;
+
+ LOG_DEBUG("hit syscall ID: 0x%x", syscall_id);
+
+ /* free previous identifier storage */
+ if (NULL != fileio_info->identifier) {
+ free(fileio_info->identifier);
+ fileio_info->identifier = NULL;
+ }
+
+ switch (syscall_id) {
+ case NDS32_SYSCALL_EXIT:
+ fileio_info->identifier = (char *)malloc(5);
+ sprintf(fileio_info->identifier, "exit");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ break;
+ case NDS32_SYSCALL_OPEN:
+ {
+ uint8_t filename[256];
+ fileio_info->identifier = (char *)malloc(5);
+ sprintf(fileio_info->identifier, "open");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ /* reserve fileio_info->param_2 for length of path */
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_3));
+ nds32_get_mapped_reg(nds32, R2, &(fileio_info->param_4));
+
+ target->type->read_buffer(target, fileio_info->param_1,
+ 256, filename);
+ fileio_info->param_2 = strlen((char *)filename) + 1;
+ }
+ break;
+ case NDS32_SYSCALL_CLOSE:
+ fileio_info->identifier = (char *)malloc(6);
+ sprintf(fileio_info->identifier, "close");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ break;
+ case NDS32_SYSCALL_READ:
+ fileio_info->identifier = (char *)malloc(5);
+ sprintf(fileio_info->identifier, "read");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_2));
+ nds32_get_mapped_reg(nds32, R2, &(fileio_info->param_3));
+ break;
+ case NDS32_SYSCALL_WRITE:
+ fileio_info->identifier = (char *)malloc(6);
+ sprintf(fileio_info->identifier, "write");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_2));
+ nds32_get_mapped_reg(nds32, R2, &(fileio_info->param_3));
+ break;
+ case NDS32_SYSCALL_LSEEK:
+ fileio_info->identifier = (char *)malloc(6);
+ sprintf(fileio_info->identifier, "lseek");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_2));
+ nds32_get_mapped_reg(nds32, R2, &(fileio_info->param_3));
+ break;
+ case NDS32_SYSCALL_UNLINK:
+ {
+ uint8_t filename[256];
+ fileio_info->identifier = (char *)malloc(7);
+ sprintf(fileio_info->identifier, "unlink");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ /* reserve fileio_info->param_2 for length of path */
+
+ target->type->read_buffer(target, fileio_info->param_1,
+ 256, filename);
+ fileio_info->param_2 = strlen((char *)filename) + 1;
+ }
+ break;
+ case NDS32_SYSCALL_RENAME:
+ {
+ uint8_t filename[256];
+ fileio_info->identifier = (char *)malloc(7);
+ sprintf(fileio_info->identifier, "rename");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ /* reserve fileio_info->param_2 for length of old path */
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_3));
+ /* reserve fileio_info->param_4 for length of new path */
+
+ target->type->read_buffer(target, fileio_info->param_1,
+ 256, filename);
+ fileio_info->param_2 = strlen((char *)filename) + 1;
+
+ target->type->read_buffer(target, fileio_info->param_3,
+ 256, filename);
+ fileio_info->param_4 = strlen((char *)filename) + 1;
+ }
+ break;
+ case NDS32_SYSCALL_FSTAT:
+ fileio_info->identifier = (char *)malloc(6);
+ sprintf(fileio_info->identifier, "fstat");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_2));
+ break;
+ case NDS32_SYSCALL_STAT:
+ {
+ uint8_t filename[256];
+ fileio_info->identifier = (char *)malloc(5);
+ sprintf(fileio_info->identifier, "stat");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ /* reserve fileio_info->param_2 for length of old path */
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_3));
+
+ target->type->read_buffer(target, fileio_info->param_1,
+ 256, filename);
+ fileio_info->param_2 = strlen((char *)filename) + 1;
+ }
+ break;
+ case NDS32_SYSCALL_GETTIMEOFDAY:
+ fileio_info->identifier = (char *)malloc(13);
+ sprintf(fileio_info->identifier, "gettimeofday");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ nds32_get_mapped_reg(nds32, R1, &(fileio_info->param_2));
+ break;
+ case NDS32_SYSCALL_ISATTY:
+ fileio_info->identifier = (char *)malloc(7);
+ sprintf(fileio_info->identifier, "isatty");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ break;
+ case NDS32_SYSCALL_SYSTEM:
+ {
+ uint8_t command[256];
+ fileio_info->identifier = (char *)malloc(7);
+ sprintf(fileio_info->identifier, "system");
+ nds32_get_mapped_reg(nds32, R0, &(fileio_info->param_1));
+ /* reserve fileio_info->param_2 for length of old path */
+
+ target->type->read_buffer(target, fileio_info->param_1,
+ 256, command);
+ fileio_info->param_2 = strlen((char *)command) + 1;
+ }
+ break;
+ case NDS32_SYSCALL_ERRNO:
+ fileio_info->identifier = (char *)malloc(6);
+ sprintf(fileio_info->identifier, "errno");
+ nds32_set_mapped_reg(nds32, R0, nds32->virtual_hosting_errno);
+ break;
+ default:
+ fileio_info->identifier = (char *)malloc(8);
+ sprintf(fileio_info->identifier, "unknown");
+ break;
+ }
+
+ return ERROR_OK;
+}
+
+int nds32_gdb_fileio_end(struct target *target, int retcode, int fileio_errno, bool ctrl_c)
+{
+ LOG_DEBUG("syscall return code: 0x%x, errno: 0x%x, ctrl_c: %s",
+ retcode, fileio_errno, ctrl_c ? "true" : "false");
+
+ struct nds32 *nds32 = target_to_nds32(target);
+
+ nds32_set_mapped_reg(nds32, R0, (uint32_t)retcode);
+
+ nds32->virtual_hosting_errno = fileio_errno;
+ nds32->virtual_hosting_ctrl_c = ctrl_c;
+ nds32->active_syscall_id = NDS32_SYSCALL_UNDEFINED;
+
+ return ERROR_OK;
+}
+
+int nds32_gdb_fileio_write_memory(struct nds32 *nds32, uint32_t address,
+ uint32_t size, const uint8_t *buffer)
+{
+ if ((NDS32_SYSCALL_FSTAT == nds32->active_syscall_id) ||
+ (NDS32_SYSCALL_STAT == nds32->active_syscall_id)) {
+ /* If doing GDB file-I/O, target should convert 'struct stat'
+ * from gdb-format to target-format */
+ uint8_t stat_buffer[NDS32_STRUCT_STAT_SIZE];
+ /* st_dev 2 */
+ stat_buffer[0] = buffer[3];
+ stat_buffer[1] = buffer[2];
+ /* st_ino 2 */
+ stat_buffer[2] = buffer[7];
+ stat_buffer[3] = buffer[6];
+ /* st_mode 4 */
+ stat_buffer[4] = buffer[11];
+ stat_buffer[5] = buffer[10];
+ stat_buffer[6] = buffer[9];
+ stat_buffer[7] = buffer[8];
+ /* st_nlink 2 */
+ stat_buffer[8] = buffer[15];
+ stat_buffer[9] = buffer[16];
+ /* st_uid 2 */
+ stat_buffer[10] = buffer[19];
+ stat_buffer[11] = buffer[18];
+ /* st_gid 2 */
+ stat_buffer[12] = buffer[23];
+ stat_buffer[13] = buffer[22];
+ /* st_rdev 2 */
+ stat_buffer[14] = buffer[27];
+ stat_buffer[15] = buffer[26];
+ /* st_size 4 */
+ stat_buffer[16] = buffer[35];
+ stat_buffer[17] = buffer[34];
+ stat_buffer[18] = buffer[33];
+ stat_buffer[19] = buffer[32];
+ /* st_atime 4 */
+ stat_buffer[20] = buffer[55];
+ stat_buffer[21] = buffer[54];
+ stat_buffer[22] = buffer[53];
+ stat_buffer[23] = buffer[52];
+ /* st_spare1 4 */
+ stat_buffer[24] = 0;
+ stat_buffer[25] = 0;
+ stat_buffer[26] = 0;
+ stat_buffer[27] = 0;
+ /* st_mtime 4 */
+ stat_buffer[28] = buffer[59];
+ stat_buffer[29] = buffer[58];
+ stat_buffer[30] = buffer[57];
+ stat_buffer[31] = buffer[56];
+ /* st_spare2 4 */
+ stat_buffer[32] = 0;
+ stat_buffer[33] = 0;
+ stat_buffer[34] = 0;
+ stat_buffer[35] = 0;
+ /* st_ctime 4 */
+ stat_buffer[36] = buffer[63];
+ stat_buffer[37] = buffer[62];
+ stat_buffer[38] = buffer[61];
+ stat_buffer[39] = buffer[60];
+ /* st_spare3 4 */
+ stat_buffer[40] = 0;
+ stat_buffer[41] = 0;
+ stat_buffer[42] = 0;
+ stat_buffer[43] = 0;
+ /* st_blksize 4 */
+ stat_buffer[44] = buffer[43];
+ stat_buffer[45] = buffer[42];
+ stat_buffer[46] = buffer[41];
+ stat_buffer[47] = buffer[40];
+ /* st_blocks 4 */
+ stat_buffer[48] = buffer[51];
+ stat_buffer[49] = buffer[50];
+ stat_buffer[50] = buffer[49];
+ stat_buffer[51] = buffer[48];
+ /* st_spare4 8 */
+ stat_buffer[52] = 0;
+ stat_buffer[53] = 0;
+ stat_buffer[54] = 0;
+ stat_buffer[55] = 0;
+ stat_buffer[56] = 0;
+ stat_buffer[57] = 0;
+ stat_buffer[58] = 0;
+ stat_buffer[59] = 0;
+
+ return nds32_write_buffer(nds32->target, address, NDS32_STRUCT_STAT_SIZE, stat_buffer);
+ } else if (NDS32_SYSCALL_GETTIMEOFDAY == nds32->active_syscall_id) {
+ /* If doing GDB file-I/O, target should convert 'struct timeval'
+ * from gdb-format to target-format */
+ uint8_t timeval_buffer[NDS32_STRUCT_TIMEVAL_SIZE];
+ timeval_buffer[0] = buffer[3];
+ timeval_buffer[1] = buffer[2];
+ timeval_buffer[2] = buffer[1];
+ timeval_buffer[3] = buffer[0];
+ timeval_buffer[4] = buffer[11];
+ timeval_buffer[5] = buffer[10];
+ timeval_buffer[6] = buffer[9];
+ timeval_buffer[7] = buffer[8];
+
+ return nds32_write_buffer(nds32->target, address, NDS32_STRUCT_TIMEVAL_SIZE, timeval_buffer);
+ }
+
+ return nds32_write_buffer(nds32->target, address, size, buffer);
+}
+
int nds32_reset_halt(struct nds32 *nds32)
{
LOG_INFO("reset halt as init");
generated by cgit v1.1 at 2024-11-16 18:01:18 +0000