From: Andrew Cagney <cagney@redhat.com>
Date: Tue, 3 Aug 2004 03:58:49 +0000 (+0000)
Subject: 2004-08-02  Andrew Cagney  <cagney@gnu.org>
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1d94326ff66409be65c133744ca8bdad6a41fb29;p=binutils-gdb.git

2004-08-02  Andrew Cagney  <cagney@gnu.org>

	* cris-tdep.c (cris_register_size): Restore function, still used
	locally.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 5162fcd5778..11b07ea6539 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,8 @@
 2004-08-02  Andrew Cagney  <cagney@gnu.org>
 
+	* cris-tdep.c (cris_register_size): Restore function, still used
+	locally.
+
 	* gdbarch.sh (deprecated_target_read_fp)
 	(deprecated_frame_locals_address, deprecated_frame_args_address)
 	(deprecated_frame_chain_valid, deprecated_frame_chain)
diff --git a/gdb/cris-tdep.c b/gdb/cris-tdep.c
index 0d11fd15b27..1cb0d529380 100644
--- a/gdb/cris-tdep.c
+++ b/gdb/cris-tdep.c
@@ -1096,6 +1096,45 @@ cris_spec_reg_applicable (struct cris_spec_reg spec_reg)
     }
 }
 
+/* Returns the register size in unit byte.  Returns 0 for an unimplemented
+   register, -1 for an invalid register.  */
+
+static int
+cris_register_size (int regno)
+{
+  int i;
+  int spec_regno;
+  
+  if (regno >= 0 && regno < NUM_GENREGS)
+    {
+      /* General registers (R0 - R15) are 32 bits.  */
+      return 4;
+    }
+  else if (regno >= NUM_GENREGS && regno < NUM_REGS)
+    {
+      /* Special register (R16 - R31).  cris_spec_regs is zero-based. 
+         Adjust regno accordingly.  */
+      spec_regno = regno - NUM_GENREGS;
+      
+      /* The entries in cris_spec_regs are stored in register number order,
+         which means we can shortcut into the array when searching it.  */
+      for (i = spec_regno; cris_spec_regs[i].name != NULL; i++)
+        {
+          if (cris_spec_regs[i].number == spec_regno 
+              && cris_spec_reg_applicable (cris_spec_regs[i]))
+            /* Go with the first applicable register.  */
+            return cris_spec_regs[i].reg_size;
+        }
+      /* Special register not applicable to this CRIS version.  */
+      return 0;
+    }
+  else
+    {
+      /* Invalid register.  */
+      return -1;
+    }
+}
+
 /* Nonzero if regno should not be fetched from the target.  This is the case
    for unimplemented (size 0) and non-existant registers.  */