From: Frank Ch. Eigler <fche@redhat.com>
Date: Thu, 2 Apr 1998 18:54:04 +0000 (+0000)
Subject: * Fixes for PR 14571.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7cdd6cac82faad2083029b2ac014d44d869f76c0;p=binutils-gdb.git

* Fixes for PR 14571.

Thu Apr  2 12:47:41 1998  Frank Ch. Eigler  <fche@cygnus.com>

	* sol-thread.c (sol_thread_store_registers): Save & restore new
 	value of single updated register to prevent accidental clobbering.
---

diff --git a/gdb/sol-thread.c b/gdb/sol-thread.c
index edd54f13d6a..fbbbbcb02b2 100644
--- a/gdb/sol-thread.c
+++ b/gdb/sol-thread.c
@@ -704,6 +704,10 @@ sol_thread_store_registers (regno)
 
   if (regno != -1)
     {				/* Not writing all the regs */
+      /* save new register value */
+      char old_value[REGISTER_SIZE];
+      memcpy(old_value, & registers[REGISTER_BYTE(regno)], REGISTER_SIZE);
+
       val = p_td_thr_getgregs (&thandle, regset);
       if (val != TD_OK)
 	error ("sol_thread_store_registers: td_thr_getgregs %s",
@@ -713,6 +717,9 @@ sol_thread_store_registers (regno)
 	error ("sol_thread_store_registers: td_thr_getfpregs %s",
 	       td_err_string (val));
 
+      /* restore register value */
+      memcpy(& registers[REGISTER_BYTE(regno)], old_value, REGISTER_SIZE);
+
 #if 0
 /* thread_db doesn't seem to handle this right */
       val = td_thr_getxregsize (&thandle, &xregsize);