[PATCH]: 827e15cef3 target/riscv: add common magic

[gerrit]

This is an automated email from Gerrit.

"Tomas Vanek <van...@fbl.cz>" just uploaded a new patch set to Gerrit, which 
you can find at https://review.openocd.org/c/openocd/+/6999

-- gerrit

commit 827e15cef3271848efb4594d88604fa47938dbb6
Author: Tomas Vanek <van...@fbl.cz>
Date:   Thu May 26 11:33:27 2022 +0200

    target/riscv: add common magic
    
    Add common_magic member to struct riscv_info.
    Introduce is_riscv() helper.
    
    Change-Id: I1af05988ad869342ba5dc6d4d0ba0ec6a8bf7bc7
    Signed-off-by: Tomas Vanek <van...@fbl.cz>

diff --git a/src/target/riscv/riscv.c b/src/target/riscv/riscv.c
index 84f1ca7294..1b592a9d17 100644
--- a/src/target/riscv/riscv.c
+++ b/src/target/riscv/riscv.c
@@ -3203,6 +3203,9 @@ struct target_type riscv_target = {
 void riscv_info_init(struct target *target, struct riscv_info *r)
 {
        memset(r, 0, sizeof(*r));
+
+       r->common_magic = RISCV_COMMON_MAGIC;
+
        r->dtm_version = 1;
        r->registers_initialized = false;
        r->current_hartid = target->coreid;
diff --git a/src/target/riscv/riscv.h b/src/target/riscv/riscv.h
index 40a46b4131..cff1c10e86 100644
--- a/src/target/riscv/riscv.h
+++ b/src/target/riscv/riscv.h
@@ -12,6 +12,8 @@ struct riscv_program;
 #include "target/register.h"
 #include <helper/command.h>
 
+#define RISCV_COMMON_MAGIC     0x52495356U
+
 /* The register cache is statically allocated. */
 #define RISCV_MAX_HARTS 1024
 #define RISCV_MAX_REGISTERS 5000
@@ -85,6 +87,8 @@ typedef struct {
 } range_list_t;
 
 struct riscv_info {
+       unsigned int common_magic;
+
        unsigned dtm_version;
 
        struct command_context *cmd_ctx;
@@ -271,6 +275,11 @@ static inline struct riscv_info *riscv_info(const struct 
target *target)
 }
 #define RISCV_INFO(R) struct riscv_info *R = riscv_info(target);
 
+static inline bool is_riscv(const struct riscv_info *riscv_info)
+{
+       return riscv_info->common_magic == RISCV_COMMON_MAGIC;
+}
+
 extern uint8_t ir_dtmcontrol[4];
 extern struct scan_field select_dtmcontrol;
 extern uint8_t ir_dbus[4];

--