diff --git a/include/elf/ChangeLog b/include/elf/ChangeLog
index 39de1ff9f..47a884e21 100644
--- a/include/elf/ChangeLog
+++ b/include/elf/ChangeLog
@@ -1,3 +1,7 @@
+2010-11-11  Mingming Sun  <mingm.sun@gmail.com>
+
+	* mips.h (E_MIPS_MACH_LS3A): Defined.
+
 2010-11-02  Joseph Myers  <joseph@codesourcery.com>
 
 	* tic6x-attrs.h (Tag_ABI_wchar_t, Tag_ABI_stack_align_needed,
diff --git a/include/elf/mips.h b/include/elf/mips.h
index 6f0c02212..c60e8fe24 100644
--- a/include/elf/mips.h
+++ b/include/elf/mips.h
@@ -222,6 +222,7 @@ END_RELOC_NUMBERS (R_MIPS_maxext)
 #define E_MIPS_MACH_9000	0x00990000
 #define E_MIPS_MACH_LS2E        0x00A00000
 #define E_MIPS_MACH_LS2F        0x00A10000
+#define E_MIPS_MACH_LS3A        0x00A20000
 
 /* Processor specific section indices.  These sections do not actually
    exist.  Symbols with a st_shndx field corresponding to one of these
diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index d7e7c6268..fa689e599 100644
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,9 @@
+2010-11-11  Mingming Sun  <mingm.sun@gmail.com>
+
+	* mips.h (INSN_LOONGSON_3A): Defined.
+	(CPU_LOONGSON_3A): Defined.
+	(OPCODE_IS_MEMBER): Add LOONGSON_3A.
+
 2010-10-09  Matt Rice  <ratmice@gmail.com>
 
 	* cgen.h (CGEN_ATTR, CGEN_ATTR_TYPE): Rename bool attribute to bool_.
diff --git a/include/opcode/mips.h b/include/opcode/mips.h
index 2fb96720b..8817ce302 100644
--- a/include/opcode/mips.h
+++ b/include/opcode/mips.h
@@ -594,6 +594,8 @@ static const unsigned int mips_isa_table[] =
 #define INSN_LOONGSON_2E          0x40000000
 /* ST Microelectronics Loongson 2F.  */
 #define INSN_LOONGSON_2F          0x80000000
+/* Loongson 3A.  */
+#define INSN_LOONGSON_3A          0x80000400
 /* RMI Xlr instruction */
 #define INSN_XLR              	  0x00000020
 
@@ -647,6 +649,7 @@ static const unsigned int mips_isa_table[] =
 #define CPU_SB1         12310201        /* octal 'SB', 01.  */
 #define CPU_LOONGSON_2E 3001
 #define CPU_LOONGSON_2F 3002
+#define CPU_LOONGSON_3A 3003
 #define CPU_OCTEON	6501
 #define CPU_XLR     	887682   	/* decimal 'XLR'   */
 
@@ -680,6 +683,8 @@ static const unsigned int mips_isa_table[] =
          && ((insn)->membership & INSN_LOONGSON_2E) != 0)               \
      || (cpu == CPU_LOONGSON_2F                                         \
          && ((insn)->membership & INSN_LOONGSON_2F) != 0)               \
+     || (cpu == CPU_LOONGSON_3A                                         \
+         && ((insn)->membership & INSN_LOONGSON_3A) != 0)               \
      || (cpu == CPU_OCTEON						\
 	 && ((insn)->membership & INSN_OCTEON) != 0)			\
      || (cpu == CPU_XLR && ((insn)->membership & INSN_XLR) != 0)        \