Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-05-22 05:42:05 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

libc/gdbstub: add memory binary read support

Browse Source 
Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>
This commit is contained in:
xuxingliang
2024-12-26 02:34:32 +08:00
committed by Xiang Xiao
parent b1d0b5a4d6
commit 03765a6a1e
1 changed files with 55 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libs/libc/gdbstub/lib_gdbstub.c
+55 -1
View File
@@ -815,7 +815,15 @@ static ssize_t gdb_get_memory(FAR struct gdb_state_s *state,
if (gdb_is_valid_region(state, addr, len, PF_R))
{
return format(buf, buf_len, (FAR const void *)addr, len);
if (format)
{
return format(buf, buf_len, (FAR const void *)addr, len);
}
else
{
ret = MIN(len, buf_len);
memcpy(buf, (FAR const void *)addr, ret);
}
}
return ret;
@@ -1164,6 +1172,49 @@ static int gdb_read_memory(FAR struct gdb_state_s *state)
return ret;
}
/****************************************************************************
* Name: gdb_read_bin_memory
*
* Description:
* Read Memory (Binary) Command Format: M addr,length
*
* Input Parameters:
* state - The pointer to the GDB state structure.
*
* Returned Value:
* The number of bytes read if successful.
* Negative value on error.
*
* Note : Comand Format: MAAAAAAAAA,LLLLLLLL
* Response Format: bXXXXXXXXYYYYYYYYY...
****************************************************************************/
static int gdb_read_bin_memory(FAR struct gdb_state_s *state)
{
uintptr_t addr;
size_t length;
int ret;
state->pkt_next++;
ret = gdb_expect_addr_length(state, &addr, &length);
if (ret < 0)
{
return ret;
}
state->pkt_buf[0] = 'b';
ret = gdb_get_memory(state, state->pkt_buf + 1, sizeof(state->pkt_buf) - 1,
addr, length, NULL);
if (ret < 0)
{
return ret;
}
state->pkt_len = ret + 1;
gdb_send_packet(state);
return ret + 1;
}
/****************************************************************************
* Name: gdb_write_memory
*
@@ -1998,6 +2049,9 @@ int gdb_process(FAR struct gdb_state_s *state, int stopreason,
case 'M': /* Write memory */
ret = gdb_write_memory(state);
break;
case 'x': /* Read binary memory */
ret = gdb_read_bin_memory(state);
break;
case 'X': /* Write binary memory */
ret = gdb_write_bin_memory(state);
break;