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libafl_qemu_gdb_reply

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This commit is contained in:
Andrea Fioraldi 2022-06-10 17:50:57 +02:00
parent e08af84b06
commit 0602bf8c22
1 changed files with 19 additions and 6 deletions
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25
gdbstub.c
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@ -2162,15 +2162,15 @@ static void handle_query_offsets(GArray *params, void *user_ctx)
//// --- Begin LibAFL code --- //// --- Begin LibAFL code ---
struct libafl_custom_gdb_cmd { struct libafl_custom_gdb_cmd {
void (*callback)(uint8_t*, size_t, void*); int (*callback)(uint8_t*, size_t, void*);
void* data; void* data;
struct libafl_custom_gdb_cmd* next; struct libafl_custom_gdb_cmd* next;
}; };
struct libafl_custom_gdb_cmd* libafl_qemu_gdb_cmds = NULL; struct libafl_custom_gdb_cmd* libafl_qemu_gdb_cmds = NULL;
void libafl_qemu_add_gdb_cmd(void (*callback)(uint8_t*, size_t, void*), void* data); void libafl_qemu_add_gdb_cmd(int (*callback)(uint8_t*, size_t, void*), void* data);
void libafl_qemu_add_gdb_cmd(void (*callback)(uint8_t*, size_t, void*), void* data) void libafl_qemu_add_gdb_cmd(int (*callback)(uint8_t*, size_t, void*), void* data)
{ {
struct libafl_custom_gdb_cmd* c = malloc(sizeof(struct libafl_custom_gdb_cmd)); struct libafl_custom_gdb_cmd* c = malloc(sizeof(struct libafl_custom_gdb_cmd));
c->callback = callback; c->callback = callback;
@ -2179,10 +2179,18 @@ void libafl_qemu_add_gdb_cmd(void (*callback)(uint8_t*, size_t, void*), void* da
libafl_qemu_gdb_cmds = c; libafl_qemu_gdb_cmds = c;
} }
void libafl_qemu_gdb_reply(const char* buf, size_t len);
void libafl_qemu_gdb_reply(const char* buf, size_t len)
{
g_autoptr(GString) hex_buf = g_string_new("O");
memtohex(hex_buf, (const uint8_t *) buf, len);
put_packet(hex_buf->str);
}
static void handle_query_rcmd(GArray *params, void *user_ctx) static void handle_query_rcmd(GArray *params, void *user_ctx)
{ {
// const guint8 zero = 0; // const guint8 zero = 0;
int len; size_t len;
if (!params->len) { if (!params->len) {
put_packet("E22"); put_packet("E22");
@ -2201,12 +2209,17 @@ static void handle_query_rcmd(GArray *params, void *user_ctx)
// g_byte_array_append(gdbserver_state.mem_buf, &zero, 1); // g_byte_array_append(gdbserver_state.mem_buf, &zero, 1);
struct libafl_custom_gdb_cmd** c = &libafl_qemu_gdb_cmds; struct libafl_custom_gdb_cmd** c = &libafl_qemu_gdb_cmds;
int recognized = 0;
while (*c) { while (*c) {
(*c)->callback(gdbserver_state.mem_buf->data, gdbserver_state.mem_buf->len, (*c)->data); recognized |= (*c)->callback(gdbserver_state.mem_buf->data, gdbserver_state.mem_buf->len, (*c)->data);
c = &(*c)->next; c = &(*c)->next;
} }
put_packet("OK"); if (recognized) {
put_packet("OK");
} else {
put_packet("");
}
} }
//// --- End LibAFL code --- //// --- End LibAFL code ---