Merge gdb and gdbserver implementations for siginfo

[deliverable/binutils-gdb.git] / gdb / ft32-tdep.c

diff --git a/gdb/ft32-tdep.c b/gdb/ft32-tdep.c
index 0b51af3d083bc4291c439dbab8b6931ffc98ee5b..720eaa70e20e45a0335e2b98a9f622e3f13e7805 100644 (file)
--- a/gdb/ft32-tdep.c
+++ b/gdb/ft32-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for FT32.
 
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -166,12 +166,21 @@ ft32_analyze_prologue (CORE_ADDR start_addr, CORE_ADDR end_addr,
   LONGEST offset;
   int regnum, pushreg;
   struct bound_minimal_symbol msymbol;
-  unsigned prologs[32];
+  const int first_saved_reg = 13;      /* The first saved register.  */
+  /* PROLOGS are addresses of the subroutine prologs, PROLOGS[n]
+     is the address of __prolog_$rN.
+     __prolog_$rN pushes registers from 13 through n inclusive.
+     So for example CALL __prolog_$r15 is equivalent to:
+       PUSH $r13 
+       PUSH $r14 
+       PUSH $r15 
+     Note that PROLOGS[0] through PROLOGS[12] are unused.  */
+  CORE_ADDR prologs[32];
 
   cache->saved_regs[FT32_PC_REGNUM] = 0;
   cache->framesize = 0;
 
-  for (regnum = 0; regnum < 32; regnum++)
+  for (regnum = first_saved_reg; regnum < 32; regnum++)
     {
       char prolog_symbol[32];
 
@@ -201,11 +210,12 @@ ft32_analyze_prologue (CORE_ADDR start_addr, CORE_ADDR end_addr,
        }
       else if (FT32_IS_CALL (inst))
        {
-         for (regnum = 0; regnum < 32; regnum++)
+         for (regnum = first_saved_reg; regnum < 32; regnum++)
            {
              if ((4 * (inst & 0x3ffff)) == prologs[regnum])
                {
-                 for (pushreg = 13; pushreg <= regnum; pushreg++)
+                 for (pushreg = first_saved_reg; pushreg <= regnum;
+                      pushreg++)
                    {
                      cache->framesize += 4;
                      cache->saved_regs[FT32_R0_REGNUM + pushreg] =