From: Richard Sandiford <rdsandiford@googlemail.com>
Date: Mon, 4 Jul 2011 20:22:52 +0000 (+0000)
Subject: gas/
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fe35f09f47706967f1ccc7c29b6b07823b8d36c6;p=binutils-gdb.git

gas/
	* config/tc-mips.c (gpr_read_mask, gpr_write_mask): Fix handling
	of register 0.
---

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 8bc4f507988..9c0ded14b7b 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2011-07-04  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	* config/tc-mips.c (gpr_read_mask, gpr_write_mask): Fix handling
+	of register 0.
+
 2011-07-04  Maciej W. Rozycki  <macro@codesourcery.com>
 
 	* config/tc-mips.c (append_insn): Make sure DWARF-2 location
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 2b3e4dcbb76..bcb1822229a 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -2450,7 +2450,8 @@ gpr_read_mask (const struct mips_cl_insn *ip)
       if (pinfo2 & INSN2_READ_GPR_Z)
 	mask |= 1 << EXTRACT_OPERAND (RZ, *ip);
     }
-  return mask & ~0;
+  /* Don't include register 0.  */
+  return mask & ~1;
 }
 
 /* Return the mask of core registers that IP writes.  */
@@ -2492,7 +2493,8 @@ gpr_write_mask (const struct mips_cl_insn *ip)
       if (pinfo2 & INSN2_WRITE_GPR_Z)
 	mask |= 1 << EXTRACT_OPERAND (RZ, *ip);
     }
-  return mask & ~0;
+  /* Don't include register 0.  */
+  return mask & ~1;
 }
 
 /* Return the mask of floating-point registers that IP reads.  */