[Crash-utility] [PATCH v3 04/16] Rename get_cpu_reg to get_current_task_reg

[Tao Liu <ltao@xxxxxxxxxx>]

Since we only leave one gdb thread, or 1 cpu thread, and can use cmd "set"
to switch task context by reusing the thread. So the word "get_cpu_reg",
which stands for "fetch registers' value for cpu thread x", is no longer
appropriate, better using "get_current_task_reg", which stands for "fetch
registers' value for the current task", and makes more sense.

Co-developed-by: Aditya Gupta <adityag@xxxxxxxxxxxxx>
Co-developed-by: Alexey Makhalov <alexey.makhalov@xxxxxxxxxxxx>
Co-developed-by: Tao Liu <ltao@xxxxxxxxxx>
Cc: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx>
Cc: Hari Bathini <hbathini@xxxxxxxxxxxxx>
Cc: Mahesh J Salgaonkar <mahesh@xxxxxxxxxxxxx>
Cc: Naveen N. Rao <naveen.n.rao@xxxxxxxxxxxxxxxxxx>
Cc: Lianbo Jiang <lijiang@xxxxxxxxxx>
Cc: HAGIO KAZUHITO(萩尾 一仁) <k-hagio-ab@xxxxxxx>
Cc: Tao Liu <ltao@xxxxxxxxxx>
Cc: Alexey Makhalov <alexey.makhalov@xxxxxxxxxxxx>
Signed-off-by: Tao Liu <ltao@xxxxxxxxxx>
---
 crash_target.c  | 5 ++---
 defs.h          | 2 +-
 gdb_interface.c | 6 +++---
 x86_64.c        | 2 +-
 4 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/crash_target.c b/crash_target.c
index 03718b5..52966f7 100644
--- a/crash_target.c
+++ b/crash_target.c
@@ -26,7 +26,7 @@
 void crash_target_init (void);
 
 extern "C" int gdb_readmem_callback(unsigned long, void *, int, int);
-extern "C" int crash_get_cpu_reg (int cpu, int regno, const char *regname,
+extern "C" int crash_get_current_task_reg (int regno, const char *regname,
                                   int regsize, void *val);
 extern "C" int gdb_change_thread_context ();
 
@@ -68,7 +68,6 @@ crash_target::fetch_registers (struct regcache *regcache, int regno)
 {
   int r;
   gdb_byte regval[16];
-  int cpu = inferior_ptid.tid();
   struct gdbarch *arch = regcache->arch ();
 
   if (regno >= 0) {
@@ -84,7 +83,7 @@ onetime:
       if (regsize > sizeof (regval))
         error (_("fatal error: buffer size is not enough to fit register value"));
 
-      if (crash_get_cpu_reg (cpu, r, regname, regsize, (void *)&regval))
+      if (crash_get_current_task_reg (r, regname, regsize, (void *)&regval))
         regcache->raw_supply (r, regval);
       else
         regcache->raw_supply (r, NULL);
diff --git a/defs.h b/defs.h
index 0d872b2..012ffdc 100644
--- a/defs.h
+++ b/defs.h
@@ -1080,7 +1080,7 @@ struct machdep_table {
         void (*get_irq_affinity)(int);
         void (*show_interrupts)(int, ulong *);
 	int (*is_page_ptr)(ulong, physaddr_t *);
-	int (*get_cpu_reg)(int, int, const char *, int, void *);
+	int (*get_current_task_reg)(int, const char *, int, void *);
 	int (*is_cpu_prstatus_valid)(int cpu);
 };
 
diff --git a/gdb_interface.c b/gdb_interface.c
index ab1bd52..b13d5fd 100644
--- a/gdb_interface.c
+++ b/gdb_interface.c
@@ -1067,11 +1067,11 @@ unsigned long crash_get_kaslr_offset(void)
 }
 
 /* Callbacks for crash_target */
-int crash_get_cpu_reg (int cpu, int regno, const char *regname,
+int crash_get_current_task_reg (int regno, const char *regname,
                        int regsize, void *value)
 {
-        if (!machdep->get_cpu_reg)
+        if (!machdep->get_current_task_reg)
                 return FALSE;
-        return machdep->get_cpu_reg(cpu, regno, regname, regsize, value);
+        return machdep->get_current_task_reg(regno, regname, regsize, value);
 }
 
diff --git a/x86_64.c b/x86_64.c
index 0c21eb8..5ab2852 100644
--- a/x86_64.c
+++ b/x86_64.c
@@ -195,7 +195,7 @@ x86_64_init(int when)
 		machdep->machspec->irq_eframe_link = UNINITIALIZED;
 		machdep->machspec->irq_stack_gap = UNINITIALIZED;
 		machdep->get_kvaddr_ranges = x86_64_get_kvaddr_ranges;
-		machdep->get_cpu_reg = x86_64_get_cpu_reg;
+		machdep->get_current_task_reg = x86_64_get_cpu_reg;
                 if (machdep->cmdline_args[0])
                         parse_cmdline_args();
 		if ((string = pc->read_vmcoreinfo("relocate"))) {
-- 
2.40.1
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