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gdbstub: Introduce an is is_query_packet helper

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This helper supports parsing of query packets with optional extensions.
The separator can be specified so that we can use it already for both
qqemu.sstep[=] and qSupported[:feature].

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Jan Kiszka 2015-02-07 09:38:43 +01:00 committed by Peter Maydell
parent 070949f39e
commit 4dabe747af
1 changed files with 10 additions and 2 deletions
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12
gdbstub.c
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@ -769,6 +769,14 @@ static CPUState *find_cpu(uint32_t thread_id)
return NULL;
}
static int is_query_packet(const char *p, const char *query, char separator)
{
unsigned int query_len = strlen(query);
return strncmp(p, query, query_len) == 0 &&
(p[query_len] == '\0' || p[query_len] == separator);
}
static int gdb_handle_packet(GDBState *s, const char *line_buf)
{
CPUState *cpu;
@ -1062,7 +1070,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
SSTEP_NOTIMER);
put_packet(s, buf);
break;
} else if (strncmp(p,"qemu.sstep",10) == 0) {
} else if (is_query_packet(p, "qemu.sstep", '=')) {
/* Display or change the sstep_flags */
p += 10;
if (*p != '=') {
@ -1135,7 +1143,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
break;
}
#endif /* !CONFIG_USER_ONLY */
if (strncmp(p, "Supported", 9) == 0) {
if (is_query_packet(p, "Supported", ':')) {
snprintf(buf, sizeof(buf), "PacketSize=%x", MAX_PACKET_LENGTH);
cc = CPU_GET_CLASS(first_cpu);
if (cc->gdb_core_xml_file != NULL) {