flash/nor: check fill pattern fits in word size

[openocd.git] / src / flash / nor / tcl.c

diff --git a/src/flash/nor/tcl.c b/src/flash/nor/tcl.c
index 3287dd97f14fbc2c35104483ccbf560b2b64298a..40105b43f7f6fe337b643533f5f26a5e91ce6dea 100644 (file)
--- a/src/flash/nor/tcl.c
+++ b/src/flash/nor/tcl.c
@@ -512,6 +512,11 @@ COMMAND_HANDLER(handle_flash_fill_command)
                        return ERROR_COMMAND_SYNTAX_ERROR;
        }
 
+       if ((wordsize < sizeof(pattern)) && (pattern >> (8 * wordsize) != 0)) {
+               command_print(CMD, "Fill pattern 0x%" PRIx64 " does not fit within %" PRIu32 "-byte word", pattern, wordsize);
+               return ERROR_FAIL;
+       }
+
        if (count == 0)
                return ERROR_OK;