Move GdbCmdParseEntry and its associated types into a separate header
file to allow the use of GdbCmdParseEntry and other gdbstub command
functions outside of gdbstub.c.
Since GdbCmdParseEntry and get_param are now public, kdoc
GdbCmdParseEntry and rename get_param to gdb_get_cmd_param.
This commit also makes gdb_put_packet public since is used in gdbstub
command handling.
Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
gdbstub/gdbstub.c | 134 ++++++++++++++-----------------------
gdbstub/internals.h | 22 ------
gdbstub/syscalls.c | 7 +-
gdbstub/system.c | 7 +-
gdbstub/user-target.c | 25 +++----
gdbstub/user.c | 7 +-
include/gdbstub/commands.h | 74 ++++++++++++++++++++
7 files changed, 148 insertions(+), 128 deletions(-)
create mode 100644 include/gdbstub/commands.h
diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c
index 37314b92e5..9ff2f4177d 100644
--- a/gdbstub/gdbstub.c
+++ b/gdbstub/gdbstub.c
@@ -30,6 +30,7 @@
#include "qemu/error-report.h"
#include "trace.h"
#include "exec/gdbstub.h"
+#include "gdbstub/commands.h"
#include "gdbstub/syscalls.h"
#ifdef CONFIG_USER_ONLY
#include "accel/tcg/vcpu-state.h"
@@ -920,43 +921,6 @@ static int cmd_parse_params(const char *data, const char *schema,
return 0;
}
-typedef void (*GdbCmdHandler)(GArray *params, void *user_ctx);
-
-/*
- * cmd_startswith -> cmd is compared using startswith
- *
- * allow_stop_reply -> true iff the gdbstub can respond to this command with a
- * "stop reply" packet. The list of commands that accept such response is
- * defined at the GDB Remote Serial Protocol documentation. see:
- * https://sourceware.org/gdb/onlinedocs/gdb/Stop-Reply-Packets.html#Stop-Reply-Packets.
- *
- * schema definitions:
- * Each schema parameter entry consists of 2 chars,
- * the first char represents the parameter type handling
- * the second char represents the delimiter for the next parameter
- *
- * Currently supported schema types:
- * 'l' -> unsigned long (stored in .val_ul)
- * 'L' -> unsigned long long (stored in .val_ull)
- * 's' -> string (stored in .data)
- * 'o' -> single char (stored in .opcode)
- * 't' -> thread id (stored in .thread_id)
- * '?' -> skip according to delimiter
- *
- * Currently supported delimiters:
- * '?' -> Stop at any delimiter (",;:=\0")
- * '0' -> Stop at "\0"
- * '.' -> Skip 1 char unless reached "\0"
- * Any other value is treated as the delimiter value itself
- */
-typedef struct GdbCmdParseEntry {
- GdbCmdHandler handler;
- const char *cmd;
- bool cmd_startswith;
- const char *schema;
- bool allow_stop_reply;
-} GdbCmdParseEntry;
-
static inline int startswith(const char *string, const char *pattern)
{
return !strncmp(string, pattern, strlen(pattern));
@@ -1023,7 +987,7 @@ static void handle_detach(GArray *params, void *user_ctx)
return;
}
- pid = get_param(params, 0)->val_ul;
+ pid = gdb_get_cmd_param(params, 0)->val_ul;
}
#ifdef CONFIG_USER_ONLY
@@ -1061,13 +1025,13 @@ static void handle_thread_alive(GArray *params, void *user_ctx)
return;
}
- if (get_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) {
+ if (gdb_get_cmd_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) {
gdb_put_packet("E22");
return;
}
- cpu = gdb_get_cpu(get_param(params, 0)->thread_id.pid,
- get_param(params, 0)->thread_id.tid);
+ cpu = gdb_get_cpu(gdb_get_cmd_param(params, 0)->thread_id.pid,
+ gdb_get_cmd_param(params, 0)->thread_id.tid);
if (!cpu) {
gdb_put_packet("E22");
return;
@@ -1079,7 +1043,7 @@ static void handle_thread_alive(GArray *params, void *user_ctx)
static void handle_continue(GArray *params, void *user_ctx)
{
if (params->len) {
- gdb_set_cpu_pc(get_param(params, 0)->val_ull);
+ gdb_set_cpu_pc(gdb_get_cmd_param(params, 0)->val_ull);
}
gdbserver_state.signal = 0;
@@ -1095,7 +1059,7 @@ static void handle_cont_with_sig(GArray *params, void *user_ctx)
* omit the addr parameter
*/
if (params->len) {
- signal = get_param(params, 0)->val_ul;
+ signal = gdb_get_cmd_param(params, 0)->val_ul;
}
gdbserver_state.signal = gdb_signal_to_target(signal);
@@ -1115,18 +1079,18 @@ static void handle_set_thread(GArray *params, void *user_ctx)
return;
}
- if (get_param(params, 1)->thread_id.kind == GDB_READ_THREAD_ERR) {
+ if (gdb_get_cmd_param(params, 1)->thread_id.kind == GDB_READ_THREAD_ERR) {
gdb_put_packet("E22");
return;
}
- if (get_param(params, 1)->thread_id.kind != GDB_ONE_THREAD) {
+ if (gdb_get_cmd_param(params, 1)->thread_id.kind != GDB_ONE_THREAD) {
gdb_put_packet("OK");
return;
}
- pid = get_param(params, 1)->thread_id.pid;
- tid = get_param(params, 1)->thread_id.tid;
+ pid = gdb_get_cmd_param(params, 1)->thread_id.pid;
+ tid = gdb_get_cmd_param(params, 1)->thread_id.tid;
#ifdef CONFIG_USER_ONLY
if (gdb_handle_set_thread_user(pid, tid)) {
return;
@@ -1142,7 +1106,7 @@ static void handle_set_thread(GArray *params, void *user_ctx)
* Note: This command is deprecated and modern gdb's will be using the
* vCont command instead.
*/
- switch (get_param(params, 0)->opcode) {
+ switch (gdb_get_cmd_param(params, 0)->opcode) {
case 'c':
gdbserver_state.c_cpu = cpu;
gdb_put_packet("OK");
@@ -1167,9 +1131,9 @@ static void handle_insert_bp(GArray *params, void *user_ctx)
}
res = gdb_breakpoint_insert(gdbserver_state.c_cpu,
- get_param(params, 0)->val_ul,
- get_param(params, 1)->val_ull,
- get_param(params, 2)->val_ull);
+ gdb_get_cmd_param(params, 0)->val_ul,
+ gdb_get_cmd_param(params, 1)->val_ull,
+ gdb_get_cmd_param(params, 2)->val_ull);
if (res >= 0) {
gdb_put_packet("OK");
return;
@@ -1191,9 +1155,9 @@ static void handle_remove_bp(GArray *params, void *user_ctx)
}
res = gdb_breakpoint_remove(gdbserver_state.c_cpu,
- get_param(params, 0)->val_ul,
- get_param(params, 1)->val_ull,
- get_param(params, 2)->val_ull);
+ gdb_get_cmd_param(params, 0)->val_ul,
+ gdb_get_cmd_param(params, 1)->val_ull,
+ gdb_get_cmd_param(params, 2)->val_ull);
if (res >= 0) {
gdb_put_packet("OK");
return;
@@ -1225,10 +1189,10 @@ static void handle_set_reg(GArray *params, void *user_ctx)
return;
}
- reg_size = strlen(get_param(params, 1)->data) / 2;
- gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 1)->data, reg_size);
+ reg_size = strlen(gdb_get_cmd_param(params, 1)->data) / 2;
+ gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 1)->data, reg_size);
gdb_write_register(gdbserver_state.g_cpu, gdbserver_state.mem_buf->data,
- get_param(params, 0)->val_ull);
+ gdb_get_cmd_param(params, 0)->val_ull);
gdb_put_packet("OK");
}
@@ -1243,7 +1207,7 @@ static void handle_get_reg(GArray *params, void *user_ctx)
reg_size = gdb_read_register(gdbserver_state.g_cpu,
gdbserver_state.mem_buf,
- get_param(params, 0)->val_ull);
+ gdb_get_cmd_param(params, 0)->val_ull);
if (!reg_size) {
gdb_put_packet("E14");
return;
@@ -1264,16 +1228,16 @@ static void handle_write_mem(GArray *params, void *user_ctx)
}
/* gdb_hextomem() reads 2*len bytes */
- if (get_param(params, 1)->val_ull >
- strlen(get_param(params, 2)->data) / 2) {
+ if (gdb_get_cmd_param(params, 1)->val_ull >
+ strlen(gdb_get_cmd_param(params, 2)->data) / 2) {
gdb_put_packet("E22");
return;
}
- gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 2)->data,
- get_param(params, 1)->val_ull);
+ gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 2)->data,
+ gdb_get_cmd_param(params, 1)->val_ull);
if (gdb_target_memory_rw_debug(gdbserver_state.g_cpu,
- get_param(params, 0)->val_ull,
+ gdb_get_cmd_param(params, 0)->val_ull,
gdbserver_state.mem_buf->data,
gdbserver_state.mem_buf->len, true)) {
gdb_put_packet("E14");
@@ -1291,16 +1255,16 @@ static void handle_read_mem(GArray *params, void *user_ctx)
}
/* gdb_memtohex() doubles the required space */
- if (get_param(params, 1)->val_ull > MAX_PACKET_LENGTH / 2) {
+ if (gdb_get_cmd_param(params, 1)->val_ull > MAX_PACKET_LENGTH / 2) {
gdb_put_packet("E22");
return;
}
g_byte_array_set_size(gdbserver_state.mem_buf,
- get_param(params, 1)->val_ull);
+ gdb_get_cmd_param(params, 1)->val_ull);
if (gdb_target_memory_rw_debug(gdbserver_state.g_cpu,
- get_param(params, 0)->val_ull,
+ gdb_get_cmd_param(params, 0)->val_ull,
gdbserver_state.mem_buf->data,
gdbserver_state.mem_buf->len, false)) {
gdb_put_packet("E14");
@@ -1324,8 +1288,8 @@ static void handle_write_all_regs(GArray *params, void *user_ctx)
}
cpu_synchronize_state(gdbserver_state.g_cpu);
- len = strlen(get_param(params, 0)->data) / 2;
- gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 0)->data, len);
+ len = strlen(gdb_get_cmd_param(params, 0)->data) / 2;
+ gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 0)->data, len);
registers = gdbserver_state.mem_buf->data;
for (reg_id = 0;
reg_id < gdbserver_state.g_cpu->gdb_num_g_regs && len > 0;
@@ -1360,7 +1324,7 @@ static void handle_read_all_regs(GArray *params, void *user_ctx)
static void handle_step(GArray *params, void *user_ctx)
{
if (params->len) {
- gdb_set_cpu_pc(get_param(params, 0)->val_ull);
+ gdb_set_cpu_pc(gdb_get_cmd_param(params, 0)->val_ull);
}
cpu_single_step(gdbserver_state.c_cpu, gdbserver_state.sstep_flags);
@@ -1373,7 +1337,7 @@ static void handle_backward(GArray *params, void *user_ctx)
gdb_put_packet("E22");
}
if (params->len == 1) {
- switch (get_param(params, 0)->opcode) {
+ switch (gdb_get_cmd_param(params, 0)->opcode) {
case 's':
if (replay_reverse_step()) {
gdb_continue();
@@ -1408,7 +1372,7 @@ static void handle_v_cont(GArray *params, void *user_ctx)
return;
}
- res = gdb_handle_vcont(get_param(params, 0)->data);
+ res = gdb_handle_vcont(gdb_get_cmd_param(params, 0)->data);
if ((res == -EINVAL) || (res == -ERANGE)) {
gdb_put_packet("E22");
} else if (res) {
@@ -1426,7 +1390,7 @@ static void handle_v_attach(GArray *params, void *user_ctx)
goto cleanup;
}
- process = gdb_get_process(get_param(params, 0)->val_ul);
+ process = gdb_get_process(gdb_get_cmd_param(params, 0)->val_ul);
if (!process) {
goto cleanup;
}
@@ -1523,7 +1487,7 @@ static void handle_v_commands(GArray *params, void *user_ctx)
return;
}
- if (!process_string_cmd(get_param(params, 0)->data,
+ if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data,
gdb_v_commands_table,
ARRAY_SIZE(gdb_v_commands_table))) {
gdb_put_packet("");
@@ -1555,7 +1519,7 @@ static void handle_set_qemu_sstep(GArray *params, void *user_ctx)
return;
}
- new_sstep_flags = get_param(params, 0)->val_ul;
+ new_sstep_flags = gdb_get_cmd_param(params, 0)->val_ul;
if (new_sstep_flags & ~gdbserver_state.supported_sstep_flags) {
gdb_put_packet("E22");
@@ -1615,13 +1579,13 @@ static void handle_query_thread_extra(GArray *params, void *user_ctx)
CPUState *cpu;
if (!params->len ||
- get_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) {
+ gdb_get_cmd_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) {
gdb_put_packet("E22");
return;
}
- cpu = gdb_get_cpu(get_param(params, 0)->thread_id.pid,
- get_param(params, 0)->thread_id.tid);
+ cpu = gdb_get_cpu(gdb_get_cmd_param(params, 0)->thread_id.pid,
+ gdb_get_cmd_param(params, 0)->thread_id.tid);
if (!cpu) {
return;
}
@@ -1673,7 +1637,7 @@ static void handle_query_supported(GArray *params, void *user_ctx)
#endif
if (params->len) {
- const char *gdb_supported = get_param(params, 0)->data;
+ const char *gdb_supported = gdb_get_cmd_param(params, 0)->data;
if (strstr(gdb_supported, "multiprocess+")) {
gdbserver_state.multiprocess = true;
@@ -1707,15 +1671,15 @@ static void handle_query_xfer_features(GArray *params, void *user_ctx)
return;
}
- p = get_param(params, 0)->data;
+ p = gdb_get_cmd_param(params, 0)->data;
xml = get_feature_xml(p, &p, process);
if (!xml) {
gdb_put_packet("E00");
return;
}
- addr = get_param(params, 1)->val_ul;
- len = get_param(params, 2)->val_ul;
+ addr = gdb_get_cmd_param(params, 1)->val_ul;
+ len = gdb_get_cmd_param(params, 2)->val_ul;
total_len = strlen(xml);
if (addr > total_len) {
gdb_put_packet("E00");
@@ -1889,13 +1853,13 @@ static void handle_gen_query(GArray *params, void *user_ctx)
return;
}
- if (process_string_cmd(get_param(params, 0)->data,
+ if (process_string_cmd(gdb_get_cmd_param(params, 0)->data,
gdb_gen_query_set_common_table,
ARRAY_SIZE(gdb_gen_query_set_common_table))) {
return;
}
- if (!process_string_cmd(get_param(params, 0)->data,
+ if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data,
gdb_gen_query_table,
ARRAY_SIZE(gdb_gen_query_table))) {
gdb_put_packet("");
@@ -1908,13 +1872,13 @@ static void handle_gen_set(GArray *params, void *user_ctx)
return;
}
- if (process_string_cmd(get_param(params, 0)->data,
+ if (process_string_cmd(gdb_get_cmd_param(params, 0)->data,
gdb_gen_query_set_common_table,
ARRAY_SIZE(gdb_gen_query_set_common_table))) {
return;
}
- if (!process_string_cmd(get_param(params, 0)->data,
+ if (!process_string_cmd(gdb_get_cmd_param(params, 0)->data,
gdb_gen_set_table,
ARRAY_SIZE(gdb_gen_set_table))) {
gdb_put_packet("");
diff --git a/gdbstub/internals.h b/gdbstub/internals.h
index 32f9f63297..34121dc61a 100644
--- a/gdbstub/internals.h
+++ b/gdbstub/internals.h
@@ -106,7 +106,6 @@ static inline int tohex(int v)
*/
void gdb_put_strbuf(void);
-int gdb_put_packet(const char *buf);
int gdb_put_packet_binary(const char *buf, int len, bool dump);
void gdb_hextomem(GByteArray *mem, const char *buf, int len);
void gdb_memtohex(GString *buf, const uint8_t *mem, int len);
@@ -166,27 +165,6 @@ void gdb_put_buffer(const uint8_t *buf, int len);
*/
void gdb_init_gdbserver_state(void);
-typedef enum GDBThreadIdKind {
- GDB_ONE_THREAD = 0,
- GDB_ALL_THREADS, /* One process, all threads */
- GDB_ALL_PROCESSES,
- GDB_READ_THREAD_ERR
-} GDBThreadIdKind;
-
-typedef union GdbCmdVariant {
- const char *data;
- uint8_t opcode;
- unsigned long val_ul;
- unsigned long long val_ull;
- struct {
- GDBThreadIdKind kind;
- uint32_t pid;
- uint32_t tid;
- } thread_id;
-} GdbCmdVariant;
-
-#define get_param(p, i) (&g_array_index(p, GdbCmdVariant, i))
-
void gdb_handle_query_rcmd(GArray *params, void *ctx); /* system */
void gdb_handle_query_offsets(GArray *params, void *user_ctx); /* user */
void gdb_handle_query_xfer_auxv(GArray *params, void *user_ctx); /*user */
diff --git a/gdbstub/syscalls.c b/gdbstub/syscalls.c
index 02e3a8f74c..4e1295b782 100644
--- a/gdbstub/syscalls.c
+++ b/gdbstub/syscalls.c
@@ -16,6 +16,7 @@
#include "sysemu/runstate.h"
#include "gdbstub/user.h"
#include "gdbstub/syscalls.h"
+#include "gdbstub/commands.h"
#include "trace.h"
#include "internals.h"
@@ -154,9 +155,9 @@ void gdb_handle_file_io(GArray *params, void *user_ctx)
uint64_t ret;
int err;
- ret = get_param(params, 0)->val_ull;
+ ret = gdb_get_cmd_param(params, 0)->val_ull;
if (params->len >= 2) {
- err = get_param(params, 1)->val_ull;
+ err = gdb_get_cmd_param(params, 1)->val_ull;
} else {
err = 0;
}
@@ -196,7 +197,7 @@ void gdb_handle_file_io(GArray *params, void *user_ctx)
gdbserver_syscall_state.current_syscall_cb = NULL;
}
- if (params->len >= 3 && get_param(params, 2)->opcode == (uint8_t)'C') {
+ if (params->len >= 3 && gdb_get_cmd_param(params, 2)->opcode == (uint8_t)'C') {
gdb_put_packet("T02");
return;
}
diff --git a/gdbstub/system.c b/gdbstub/system.c
index d235403855..1ad87fe7fd 100644
--- a/gdbstub/system.c
+++ b/gdbstub/system.c
@@ -16,6 +16,7 @@
#include "qemu/cutils.h"
#include "exec/gdbstub.h"
#include "gdbstub/syscalls.h"
+#include "gdbstub/commands.h"
#include "exec/hwaddr.h"
#include "exec/tb-flush.h"
#include "sysemu/cpus.h"
@@ -501,7 +502,7 @@ void gdb_handle_set_qemu_phy_mem_mode(GArray *params, void *ctx)
return;
}
- if (!get_param(params, 0)->val_ul) {
+ if (!gdb_get_cmd_param(params, 0)->val_ul) {
phy_memory_mode = 0;
} else {
phy_memory_mode = 1;
@@ -519,7 +520,7 @@ void gdb_handle_query_rcmd(GArray *params, void *ctx)
return;
}
- len = strlen(get_param(params, 0)->data);
+ len = strlen(gdb_get_cmd_param(params, 0)->data);
if (len % 2) {
gdb_put_packet("E01");
return;
@@ -527,7 +528,7 @@ void gdb_handle_query_rcmd(GArray *params, void *ctx)
g_assert(gdbserver_state.mem_buf->len == 0);
len = len / 2;
- gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 0)->data, len);
+ gdb_hextomem(gdbserver_state.mem_buf, gdb_get_cmd_param(params, 0)->data, len);
g_byte_array_append(gdbserver_state.mem_buf, &zero, 1);
qemu_chr_be_write(gdbserver_system_state.mon_chr,
gdbserver_state.mem_buf->data,
diff --git a/gdbstub/user-target.c b/gdbstub/user-target.c
index a9c6c64512..b5e01fd8b0 100644
--- a/gdbstub/user-target.c
+++ b/gdbstub/user-target.c
@@ -9,6 +9,7 @@
#include "qemu/osdep.h"
#include "exec/gdbstub.h"
+#include "gdbstub/commands.h"
#include "qemu.h"
#include "internals.h"
#ifdef CONFIG_LINUX
@@ -250,8 +251,8 @@ void gdb_handle_query_xfer_auxv(GArray *params, void *user_ctx)
return;
}
- offset = get_param(params, 0)->val_ul;
- len = get_param(params, 1)->val_ul;
+ offset = gdb_get_cmd_param(params, 0)->val_ul;
+ len = gdb_get_cmd_param(params, 1)->val_ul;
ts = get_task_state(gdbserver_state.c_cpu);
saved_auxv = ts->info->saved_auxv;
auxv_len = ts->info->auxv_len;
@@ -288,7 +289,7 @@ void gdb_handle_query_xfer_auxv(GArray *params, void *user_ctx)
static const char *get_filename_param(GArray *params, int i)
{
- const char *hex_filename = get_param(params, i)->data;
+ const char *hex_filename = gdb_get_cmd_param(params, i)->data;
gdb_hextomem(gdbserver_state.mem_buf, hex_filename,
strlen(hex_filename) / 2);
g_byte_array_append(gdbserver_state.mem_buf, (const guint8 *)"", 1);
@@ -306,8 +307,8 @@ static void hostio_reply_with_data(const void *buf, size_t n)
void gdb_handle_v_file_open(GArray *params, void *user_ctx)
{
const char *filename = get_filename_param(params, 0);
- uint64_t flags = get_param(params, 1)->val_ull;
- uint64_t mode = get_param(params, 2)->val_ull;
+ uint64_t flags = gdb_get_cmd_param(params, 1)->val_ull;
+ uint64_t mode = gdb_get_cmd_param(params, 2)->val_ull;
#ifdef CONFIG_LINUX
int fd = do_guest_openat(cpu_env(gdbserver_state.g_cpu), 0, filename,
@@ -325,7 +326,7 @@ void gdb_handle_v_file_open(GArray *params, void *user_ctx)
void gdb_handle_v_file_close(GArray *params, void *user_ctx)
{
- int fd = get_param(params, 0)->val_ul;
+ int fd = gdb_get_cmd_param(params, 0)->val_ul;
if (close(fd) == -1) {
g_string_printf(gdbserver_state.str_buf, "F-1,%d", errno);
@@ -338,9 +339,9 @@ void gdb_handle_v_file_close(GArray *params, void *user_ctx)
void gdb_handle_v_file_pread(GArray *params, void *user_ctx)
{
- int fd = get_param(params, 0)->val_ul;
- size_t count = get_param(params, 1)->val_ull;
- off_t offset = get_param(params, 2)->val_ull;
+ int fd = gdb_get_cmd_param(params, 0)->val_ul;
+ size_t count = gdb_get_cmd_param(params, 1)->val_ull;
+ off_t offset = gdb_get_cmd_param(params, 2)->val_ull;
size_t bufsiz = MIN(count, BUFSIZ);
g_autofree char *buf = g_try_malloc(bufsiz);
@@ -383,9 +384,9 @@ void gdb_handle_v_file_readlink(GArray *params, void *user_ctx)
void gdb_handle_query_xfer_exec_file(GArray *params, void *user_ctx)
{
- uint32_t pid = get_param(params, 0)->val_ul;
- uint32_t offset = get_param(params, 1)->val_ul;
- uint32_t length = get_param(params, 2)->val_ul;
+ uint32_t pid = gdb_get_cmd_param(params, 0)->val_ul;
+ uint32_t offset = gdb_get_cmd_param(params, 1)->val_ul;
+ uint32_t length = gdb_get_cmd_param(params, 2)->val_ul;
GDBProcess *process = gdb_get_process(pid);
if (!process) {
diff --git a/gdbstub/user.c b/gdbstub/user.c
index e34b58b407..b36033bc7a 100644
--- a/gdbstub/user.c
+++ b/gdbstub/user.c
@@ -16,6 +16,7 @@
#include "exec/hwaddr.h"
#include "exec/tb-flush.h"
#include "exec/gdbstub.h"
+#include "gdbstub/commands.h"
#include "gdbstub/syscalls.h"
#include "gdbstub/user.h"
#include "gdbstub/enums.h"
@@ -793,7 +794,7 @@ void gdb_syscall_return(CPUState *cs, int num)
void gdb_handle_set_catch_syscalls(GArray *params, void *user_ctx)
{
- const char *param = get_param(params, 0)->data;
+ const char *param = gdb_get_cmd_param(params, 0)->data;
GDBSyscallsMask catch_syscalls_mask;
bool catch_all_syscalls;
unsigned int num;
@@ -858,8 +859,8 @@ void gdb_handle_query_xfer_siginfo(GArray *params, void *user_ctx)
unsigned long offset, len;
uint8_t *siginfo_offset;
- offset = get_param(params, 0)->val_ul;
- len = get_param(params, 1)->val_ul;
+ offset = gdb_get_cmd_param(params, 0)->val_ul;
+ len = gdb_get_cmd_param(params, 1)->val_ul;
if (offset + len > gdbserver_user_state.siginfo_len) {
/* Invalid offset and/or requested length. */
diff --git a/include/gdbstub/commands.h b/include/gdbstub/commands.h
new file mode 100644
index 0000000000..dd45c38472
--- /dev/null
+++ b/include/gdbstub/commands.h
@@ -0,0 +1,74 @@
+#ifndef GDBSTUB_COMMANDS_H
+#define GDBSTUB
+
+typedef void (*GdbCmdHandler)(GArray *params, void *user_ctx);
+
+typedef enum GDBThreadIdKind {
+ GDB_ONE_THREAD = 0,
+ GDB_ALL_THREADS, /* One process, all threads */
+ GDB_ALL_PROCESSES,
+ GDB_READ_THREAD_ERR
+} GDBThreadIdKind;
+
+typedef union GdbCmdVariant {
+ const char *data;
+ uint8_t opcode;
+ unsigned long val_ul;
+ unsigned long long val_ull;
+ struct {
+ GDBThreadIdKind kind;
+ uint32_t pid;
+ uint32_t tid;
+ } thread_id;
+} GdbCmdVariant;
+
+#define gdb_get_cmd_param(p, i) (&g_array_index(p, GdbCmdVariant, i))
+
+/**
+ * typedef GdbCmdParseEntry - gdb command parser
+ *
+ * This structure keeps the information necessary to match a gdb command,
+ * parse it (extract its parameters), and select the correct handler for it.
+ *
+ * @cmd: The command to be matched
+ * @cmd_startswith: If true, @cmd is compared using startswith
+ * @schema: Each schema for the command parameter entry consists of 2 chars,
+ * the first char represents the parameter type handling the second char
+ * represents the delimiter for the next parameter.
+ *
+ * Currently supported schema types:
+ * 'l' -> unsigned long (stored in .val_ul)
+ * 'L' -> unsigned long long (stored in .val_ull)
+ * 's' -> string (stored in .data)
+ * 'o' -> single char (stored in .opcode)
+ * 't' -> thread id (stored in .thread_id)
+ * '?' -> skip according to delimiter
+ *
+ * Currently supported delimiters:
+ * '?' -> Stop at any delimiter (",;:=\0")
+ * '0' -> Stop at "\0"
+ * '.' -> Skip 1 char unless reached "\0"
+ * Any other value is treated as the delimiter value itself
+ *
+ * @allow_stop_reply: True iff the gdbstub can respond to this command with a
+ * "stop reply" packet. The list of commands that accept such response is
+ * defined at the GDB Remote Serial Protocol documentation. See:
+ * https://sourceware.org/gdb/onlinedocs/gdb/Stop-Reply-Packets.html#Stop-Reply-Packets.
+ */
+typedef struct GdbCmdParseEntry {
+ GdbCmdHandler handler;
+ const char *cmd;
+ bool cmd_startswith;
+ const char *schema;
+ bool allow_stop_reply;
+} GdbCmdParseEntry;
+
+#define get_cmd_parsers(p) (&g_array_index(p, GdbCmdParseEntry, 0))
+
+/**
+ * gdb_put_packet() - put string into gdb server's buffer so it is sent
+ * to the client
+ */
+int gdb_put_packet(const char *buf);
+
+#endif /* GDBSTUB_COMMANDS_H */
--
2.34.1
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