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[PATCH v2 6/9] gdbstub: Only call cmd_parse_params() with non-NULL comma
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v2 6/9] gdbstub: Only call cmd_parse_params() with non-NULL command schema |
Date: |
Thu, 6 May 2021 15:37:55 +0200 |
Move the NULL check on command schema buffer from the callee
cmd_parse_params() to the single caller, process_string_cmd().
This simplifies the process_string_cmd() logic.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
gdbstub.c | 27 ++++++++++++---------------
1 file changed, 12 insertions(+), 15 deletions(-)
diff --git a/gdbstub.c b/gdbstub.c
index 83d47c67325..7cee2fb0f1f 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1368,12 +1368,9 @@ static int cmd_parse_params(const char *data, const char
*schema,
int curr_param;
const char *curr_schema, *curr_data;
+ assert(schema);
*num_params = 0;
- if (!schema) {
- return 0;
- }
-
curr_schema = schema;
curr_param = 0;
curr_data = data;
@@ -1471,7 +1468,7 @@ static inline int startswith(const char *string, const
char *pattern)
static int process_string_cmd(void *user_ctx, const char *data,
const GdbCmdParseEntry *cmds, int num_cmds)
{
- int i, schema_len, max_num_params = 0;
+ int i;
GdbCmdContext gdb_ctx;
if (!cmds) {
@@ -1488,21 +1485,21 @@ static int process_string_cmd(void *user_ctx, const
char *data,
}
if (cmd->schema) {
- schema_len = strlen(cmd->schema);
+ int schema_len = strlen(cmd->schema);
+ int max_num_params = schema_len / 2;
+
if (schema_len % 2) {
return -2;
}
- max_num_params = schema_len / 2;
- }
+ gdb_ctx.params = (GdbCmdVariant *)alloca(sizeof(*gdb_ctx.params)
+ * max_num_params);
+ memset(gdb_ctx.params, 0, sizeof(*gdb_ctx.params) *
max_num_params);
- gdb_ctx.params =
- (GdbCmdVariant *)alloca(sizeof(*gdb_ctx.params) * max_num_params);
- memset(gdb_ctx.params, 0, sizeof(*gdb_ctx.params) * max_num_params);
-
- if (cmd_parse_params(&data[strlen(cmd->cmd)], cmd->schema,
- gdb_ctx.params, &gdb_ctx.num_params)) {
- return -1;
+ if (cmd_parse_params(&data[strlen(cmd->cmd)], cmd->schema,
+ gdb_ctx.params, &gdb_ctx.num_params)) {
+ return -1;
+ }
}
cmd->handler(&gdb_ctx, user_ctx);
--
2.26.3
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), (continued)
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Eric Blake, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Warner Losh, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Eric Blake, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Warner Losh, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Eric Blake, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Peter Maydell, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Warner Losh, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Peter Maydell, 2021/05/06
- Re: [PATCH v2 4/9] bsd-user/syscall: Replace alloca() by g_new(), Warner Losh, 2021/05/06
[PATCH v2 5/9] gdbstub: Constify GdbCmdParseEntry, Philippe Mathieu-Daudé, 2021/05/06
[PATCH v2 6/9] gdbstub: Only call cmd_parse_params() with non-NULL command schema,
Philippe Mathieu-Daudé <=
[PATCH v2 7/9] gdbstub: Replace alloca() + memset(0) by g_new0(), Philippe Mathieu-Daudé, 2021/05/06
[PATCH v2 8/9] hw/misc/pca9552: Replace g_newa() by g_new(), Philippe Mathieu-Daudé, 2021/05/06
[PATCH v2 9/9] target/ppc/kvm: Replace alloca() by g_malloc(), Philippe Mathieu-Daudé, 2021/05/06
Re: [PATCH v2 0/9] misc: Replace alloca() by g_malloc(), Warner Losh, 2021/05/06