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Revert "server/gdb_server.c: support unavailable registers" 

This reverts commit 236c54c94a.

Change-Id: I59ac4e3907547356e08c567fc2c8f50a13902bd9
This commit is contained in:
wangyanwen 2024-06-03 18:19:44 +08:00 committed by Huaqi Fang
parent 56dab6ce0c
commit 71b32bc43e
1 changed files with 19 additions and 36 deletions
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55
src/server/gdb_server.c
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@ -1260,29 +1260,6 @@ static void gdb_target_to_reg(struct target *target,
}
}
/* get register value if needed and fill the buffer accordingly */
static int gdb_get_reg_value_as_str(struct target *target, char *tstr, struct reg *reg)
{
int retval = ERROR_OK;
if (!reg->valid)
retval = reg->type->get(reg);
const unsigned int len = DIV_ROUND_UP(reg->size, 8) * 2;
switch (retval) {
case ERROR_OK:
gdb_str_to_target(target, tstr, reg);
return ERROR_OK;
case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
memset(tstr, 'x', len);
tstr[len] = '\0';
return ERROR_OK;
}
memset(tstr, '0', len);
tstr[len] = '\0';
return ERROR_FAIL;
}
static int gdb_get_registers_packet(struct connection *connection,
char const *packet, int packet_size)
{
@ -1324,13 +1301,16 @@ static int gdb_get_registers_packet(struct connection *connection,
for (i = 0; i < reg_list_size; i++) {
if (!reg_list[i] || !reg_list[i]->exist || reg_list[i]->hidden)
continue;
retval = gdb_get_reg_value_as_str(target, reg_packet_p, reg_list[i]);
if (retval != ERROR_OK && gdb_report_register_access_error) {
LOG_DEBUG("Couldn't get register %s.", reg_list[i]->name);
free(reg_packet);
free(reg_list);
return gdb_error(connection, retval);
if (!reg_list[i]->valid) {
retval = reg_list[i]->type->get(reg_list[i]);
if (retval != ERROR_OK && gdb_report_register_access_error) {
LOG_DEBUG("Couldn't get register %s.", reg_list[i]->name);
free(reg_packet);
free(reg_list);
return gdb_error(connection, retval);
}
}
gdb_str_to_target(target, reg_packet_p, reg_list[i]);
reg_packet_p += DIV_ROUND_UP(reg_list[i]->size, 8) * 2;
}
@ -1447,15 +1427,18 @@ static int gdb_get_register_packet(struct connection *connection,
return gdb_error(connection, ERROR_FAIL);
}
if (!reg_list[reg_num]->valid) {
retval = reg_list[reg_num]->type->get(reg_list[reg_num]);
if (retval != ERROR_OK && gdb_report_register_access_error) {
LOG_DEBUG("Couldn't get register %s.", reg_list[reg_num]->name);
free(reg_list);
return gdb_error(connection, retval);
}
}
reg_packet = calloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2 + 1, 1); /* plus one for string termination null */
retval = gdb_get_reg_value_as_str(target, reg_packet, reg_list[reg_num]);
if (retval != ERROR_OK && gdb_report_register_access_error) {
LOG_DEBUG("Couldn't get register %s.", reg_list[reg_num]->name);
free(reg_packet);
free(reg_list);
return gdb_error(connection, retval);
}
gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
gdb_put_packet(connection, reg_packet, DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2);