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gdbstub: Implement breakpoint commands (Z/z pkt) with new infra

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Signed-off-by: Jon Doron <arilou@gmail.com>
Message-Id: <20190529064148.19856-8-arilou@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Jon Doron 2019-05-29 09:41:35 +03:00 • committed by Alex Bennée
parent 3a9651d674
commit 77f6ce500f
1 changed files with 67 additions and 19 deletions
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86
gdbstub.c
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@ -954,7 +954,7 @@ static inline int xlat_gdb_type(CPUState *cpu, int gdbtype)
} }
#endif #endif
static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type) static int gdb_breakpoint_insert(int type, target_ulong addr, target_ulong len)
{ {
CPUState *cpu; CPUState *cpu;
int err = 0; int err = 0;
@ -991,7 +991,7 @@ static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type)
} }
} }
static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type) static int gdb_breakpoint_remove(int type, target_ulong addr, target_ulong len)
{ {
CPUState *cpu; CPUState *cpu;
int err = 0; int err = 0;
@ -1609,6 +1609,52 @@ static void handle_set_thread(GdbCmdContext *gdb_ctx, void *user_ctx)
} }
} }
static void handle_insert_bp(GdbCmdContext *gdb_ctx, void *user_ctx)
{
int res;
if (gdb_ctx->num_params != 3) {
put_packet(gdb_ctx->s, "E22");
return;
}
res = gdb_breakpoint_insert(gdb_ctx->params[0].val_ul,
gdb_ctx->params[1].val_ull,
gdb_ctx->params[2].val_ull);
if (res >= 0) {
put_packet(gdb_ctx->s, "OK");
return;
} else if (res == -ENOSYS) {
put_packet(gdb_ctx->s, "");
return;
}
put_packet(gdb_ctx->s, "E22");
}
static void handle_remove_bp(GdbCmdContext *gdb_ctx, void *user_ctx)
{
int res;
if (gdb_ctx->num_params != 3) {
put_packet(gdb_ctx->s, "E22");
return;
}
res = gdb_breakpoint_remove(gdb_ctx->params[0].val_ul,
gdb_ctx->params[1].val_ull,
gdb_ctx->params[2].val_ull);
if (res >= 0) {
put_packet(gdb_ctx->s, "OK");
return;
} else if (res == -ENOSYS) {
put_packet(gdb_ctx->s, "");
return;
}
put_packet(gdb_ctx->s, "E22");
}
static int gdb_handle_packet(GDBState *s, const char *line_buf) static int gdb_handle_packet(GDBState *s, const char *line_buf)
{ {
CPUState *cpu; CPUState *cpu;
@ -1864,24 +1910,26 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
put_packet(s, "OK"); put_packet(s, "OK");
break; break;
case 'Z': case 'Z':
{
static const GdbCmdParseEntry insert_bp_cmd_desc = {
.handler = handle_insert_bp,
.cmd = "Z",
.cmd_startswith = 1,
.schema = "l?L?L0"
};
cmd_parser = &insert_bp_cmd_desc;
}
break;
case 'z': case 'z':
type = strtoul(p, (char **)&p, 16); {
if (*p == ',') static const GdbCmdParseEntry remove_bp_cmd_desc = {
p++; .handler = handle_remove_bp,
addr = strtoull(p, (char **)&p, 16); .cmd = "z",
if (*p == ',') .cmd_startswith = 1,
p++; .schema = "l?L?L0"
len = strtoull(p, (char **)&p, 16); };
if (ch == 'Z') cmd_parser = &remove_bp_cmd_desc;
res = gdb_breakpoint_insert(addr, len, type); }
else
res = gdb_breakpoint_remove(addr, len, type);
if (res >= 0)
put_packet(s, "OK");
else if (res == -ENOSYS)
put_packet(s, "");
else
put_packet(s, "E22");
break; break;
case 'H': case 'H':
{ {