gdb

	PR backtrace/10770:
	* valarith.c (value_binop): Handle BINOP_GTR, BINOP_LEQ, and
	BINOP_GEQ.  Handle BINOP_NOTEQUAL in the signed case.
	* dwarf2expr.c (new_dwarf_expr_context): Allocate
	dwarf_stack_values, not CORE_ADDRs.
	(execute_stack_op): Change DW_OP_div and comparison operators to
	use signed operands.
gdb/testsuite
	PR backtrace/10770:
	* gdb.dwarf2/pr10770.exp: New file.
	* gdb.dwarf2/pr10770.c: New file.
	* gdb.dwarf2/Makefile.in (EXECUTABLES): Add pr10770.

7 files changed, 449 insertions, 5 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 1055be8..ca5f9d4 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,13 @@
+2010-01-20  Tom Tromey  <tromey@redhat.com>
+
+	PR backtrace/10770:
+	* valarith.c (value_binop): Handle BINOP_GTR, BINOP_LEQ, and
+	BINOP_GEQ.  Handle BINOP_NOTEQUAL in the signed case.
+	* dwarf2expr.c (new_dwarf_expr_context): Allocate
+	dwarf_stack_values, not CORE_ADDRs.
+	(execute_stack_op): Change DW_OP_div and comparison operators to
+	use signed operands.
+
 2010-01-20  Vladimir Prus  <vladimir@codesourcery.com>
 
 	Per-inferior args and tty and environment.
diff --git a/gdb/dwarf2expr.c b/gdb/dwarf2expr.c
index 5e27d38..ed21edf 100644
--- a/gdb/dwarf2expr.c
+++ b/gdb/dwarf2expr.c
@@ -44,7 +44,8 @@ new_dwarf_expr_context (void)
   retval = xcalloc (1, sizeof (struct dwarf_expr_context));
   retval->stack_len = 0;
   retval->stack_allocated = 10;
-  retval->stack = xmalloc (retval->stack_allocated * sizeof (CORE_ADDR));
+  retval->stack = xmalloc (retval->stack_allocated
+			   * sizeof (struct dwarf_stack_value));
   retval->num_pieces = 0;
   retval->pieces = 0;
   retval->max_recursion_depth = 0x100;
@@ -712,7 +713,7 @@ execute_stack_op (struct dwarf_expr_context *ctx,
 	       the right width.  */
 	    CORE_ADDR first, second;
 	    enum exp_opcode binop;
-	    struct value *val1, *val2;
+	    struct value *val1 = NULL, *val2 = NULL;
 	    struct type *stype, *utype;
 
 	    second = dwarf_expr_fetch (ctx, 0);
@@ -723,8 +724,6 @@ execute_stack_op (struct dwarf_expr_context *ctx,
 
 	    utype = unsigned_address_type (ctx->gdbarch, ctx->addr_size);
 	    stype = signed_address_type (ctx->gdbarch, ctx->addr_size);
-	    val1 = value_from_longest (utype, first);
-	    val2 = value_from_longest (utype, second);
 
 	    switch (op)
 	      {
@@ -733,6 +732,8 @@ execute_stack_op (struct dwarf_expr_context *ctx,
 		break;
 	      case DW_OP_div:
 		binop = BINOP_DIV;
+		val1 = value_from_longest (stype, first);
+		val2 = value_from_longest (stype, second);
                 break;
 	      case DW_OP_minus:
 		binop = BINOP_SUB;
@@ -764,26 +765,45 @@ execute_stack_op (struct dwarf_expr_context *ctx,
 		break;
 	      case DW_OP_le:
 		binop = BINOP_LEQ;
+		val1 = value_from_longest (stype, first);
+		val2 = value_from_longest (stype, second);
 		break;
 	      case DW_OP_ge:
 		binop = BINOP_GEQ;
+		val1 = value_from_longest (stype, first);
+		val2 = value_from_longest (stype, second);
 		break;
 	      case DW_OP_eq:
 		binop = BINOP_EQUAL;
+		val1 = value_from_longest (stype, first);
+		val2 = value_from_longest (stype, second);
 		break;
 	      case DW_OP_lt:
 		binop = BINOP_LESS;
+		val1 = value_from_longest (stype, first);
+		val2 = value_from_longest (stype, second);
 		break;
 	      case DW_OP_gt:
 		binop = BINOP_GTR;
+		val1 = value_from_longest (stype, first);
+		val2 = value_from_longest (stype, second);
 		break;
 	      case DW_OP_ne:
 		binop = BINOP_NOTEQUAL;
+		val1 = value_from_longest (stype, first);
+		val2 = value_from_longest (stype, second);
 		break;
 	      default:
 		internal_error (__FILE__, __LINE__,
 				_("Can't be reached."));
 	      }
+
+	    /* We use unsigned operands by default.  */
+	    if (val1 == NULL)
+	      val1 = value_from_longest (utype, first);
+	    if (val2 == NULL)
+	      val2 = value_from_longest (utype, second);
+
 	    result = value_as_long (value_binop (val1, val2, binop));
 	  }
 	  break;
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index c5b4f4e..3422558 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2010-01-20  Tom Tromey  <tromey@redhat.com>
+
+	PR backtrace/10770:
+	* gdb.dwarf2/pr10770.exp: New file.
+	* gdb.dwarf2/pr10770.c: New file.
+	* gdb.dwarf2/Makefile.in (EXECUTABLES): Add pr10770.
+
 2010-01-20  Vladimir Prus  <vladimir@codesourcery.com>
 
 	* gdb.mi/mi-async.exp: Remove check for 'async' target, because
diff --git a/gdb/testsuite/gdb.dwarf2/Makefile.in b/gdb/testsuite/gdb.dwarf2/Makefile.in
index 2d305c6..cb9de27 100644
--- a/gdb/testsuite/gdb.dwarf2/Makefile.in
+++ b/gdb/testsuite/gdb.dwarf2/Makefile.in
@@ -21,7 +21,7 @@
 VPATH = @srcdir@
 srcdir = @srcdir@
 
-EXECUTABLES = *.x
+EXECUTABLES = *.x pr10770
 
 all info install-info dvi install uninstall installcheck check:
 	@echo "Nothing to be done for $@..."
diff --git a/gdb/testsuite/gdb.dwarf2/pr10770.c b/gdb/testsuite/gdb.dwarf2/pr10770.c
new file mode 100644
index 0000000..64dfc91
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/pr10770.c
@@ -0,0 +1,335 @@
+/* This file comes from GCC.  If you are tempted to change it,
+   consider also changing the copy there.  */
+
+/* HP-UX libunwind.so doesn't provide _UA_END_OF_STACK */
+/* { dg-do run } */
+/* { dg-options "-fexceptions" } */
+/* { dg-skip-if "" { "ia64-*-hpux11.*" }  { "*" } { "" } } */
+/* Verify DW_OP_* handling in the unwinder.  */
+
+#include <unwind.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* #define OP_addr(x) 0x06, ... */
+#define OP_deref 0x06,
+#define SLEB128(x) (x)&0x7f	/* Assume here the value is -0x40 ... 0x3f.  */
+#define ULEB128(x) (x)&0x7f	/* Assume here the value is 0 ... 0x7f.  */
+#define VAL1(x) (x)&0xff
+#if defined (__BIG_ENDIAN__)
+#define VAL2(x) ((x)>>8)&0xff,(x)&0xff
+#define VAL4(x) ((x)>>24)&0xff,((x)>>16)&0xff,((x)>>8)&0xff,(x)&0xff
+#define VAL8(x) ((x)>>56)&0xff,((x)>>48)&0xff,((x)>>40)&0xff,((x)>>32)&0xff,((x)>>24)&0xff,((x)>>16)&0xff,((x)>>8)&0xff,(x)&0xff
+#elif defined(__LITTLE_ENDIAN__) || defined(__x86_64__) || defined(__i386__)
+#define VAL2(x) (x)&0xff,((x)>>8)&0xff
+#define VAL4(x) (x)&0xff,((x)>>8)&0xff,((x)>>16)&0xff,((x)>>24)&0xff
+#define VAL8(x) (x)&0xff,((x)>>8)&0xff,((x)>>16)&0xff,((x)>>24)&0xff,((x)>>32)&0xff,((x)>>40)&0xff,((x)>>48)&0xff,((x)>>56)&0xff
+#endif
+#define OP_const1u(x) 0x08,VAL1(x),
+#define OP_const1s(x) 0x09,VAL1(x),
+#define OP_const2u(x) 0x0a,VAL2(x),
+#define OP_const2s(x) 0x0b,VAL2(x),
+#define OP_const4u(x) 0x0c,VAL4(x),
+#define OP_const4s(x) 0x0d,VAL4(x),
+#define OP_const8u(x) 0x0e,VAL8(x),
+#define OP_const8s(x) 0x0f,VAL8(x),
+#define OP_constu(x) 0x10,ULEB128(x),
+#define OP_consts(x) 0x11,SLEB128(x),
+#define OP_dup 0x12,
+#define OP_drop 0x13,
+#define OP_over 0x14,
+#define OP_pick(x) 0x15,VAL1(x),
+#define OP_swap 0x16,
+#define OP_rot 0x17,
+#define OP_xderef 0x18,
+#define OP_abs 0x19,
+#define OP_and 0x1a,
+#define OP_div 0x1b,
+#define OP_minus 0x1c,
+#define OP_mod 0x1d,
+#define OP_mul 0x1e,
+#define OP_neg 0x1f,
+#define OP_not 0x20,
+#define OP_or 0x21,
+#define OP_plus 0x22,
+#define OP_plus_uconst(x) 0x23,ULEB128(x),
+#define OP_shl 0x24,
+#define OP_shr 0x25,
+#define OP_shra 0x26,
+#define OP_xor 0x27,
+#define OP_bra(x) 0x28,VAL2(x),
+#define OP_eq 0x29,
+#define OP_ge 0x2a,
+#define OP_gt 0x2b,
+#define OP_le 0x2c,
+#define OP_lt 0x2d,
+#define OP_ne 0x2e,
+#define OP_skip(x) 0x2f,VAL2(x),
+#define OP_lit0 0x30,
+#define OP_lit1 0x31,
+#define OP_lit2 0x32,
+#define OP_lit3 0x33,
+#define OP_lit4 0x34,
+#define OP_lit5 0x35,
+#define OP_lit6 0x36,
+#define OP_lit7 0x37,
+#define OP_lit8 0x38,
+#define OP_lit9 0x39,
+#define OP_lit10 0x3a,
+#define OP_lit11 0x3b,
+#define OP_lit12 0x3c,
+#define OP_lit13 0x3d,
+#define OP_lit14 0x3e,
+#define OP_lit15 0x3f,
+#define OP_lit16 0x40,
+#define OP_lit17 0x41,
+#define OP_lit18 0x42,
+#define OP_lit19 0x43,
+#define OP_lit20 0x44,
+#define OP_lit21 0x45,
+#define OP_lit22 0x46,
+#define OP_lit23 0x47,
+#define OP_lit24 0x48,
+#define OP_lit25 0x49,
+#define OP_lit26 0x4a,
+#define OP_lit27 0x4b,
+#define OP_lit28 0x4c,
+#define OP_lit29 0x4d,
+#define OP_lit30 0x4e,
+#define OP_lit31 0x4f,
+#define OP_reg0 0x50,
+#define OP_reg1 0x51,
+#define OP_reg2 0x52,
+#define OP_reg3 0x53,
+#define OP_reg4 0x54,
+#define OP_reg5 0x55,
+#define OP_reg6 0x56,
+#define OP_reg7 0x57,
+#define OP_reg8 0x58,
+#define OP_reg9 0x59,
+#define OP_reg10 0x5a,
+#define OP_reg11 0x5b,
+#define OP_reg12 0x5c,
+#define OP_reg13 0x5d,
+#define OP_reg14 0x5e,
+#define OP_reg15 0x5f,
+#define OP_reg16 0x60,
+#define OP_reg17 0x61,
+#define OP_reg18 0x62,
+#define OP_reg19 0x63,
+#define OP_reg20 0x64,
+#define OP_reg21 0x65,
+#define OP_reg22 0x66,
+#define OP_reg23 0x67,
+#define OP_reg24 0x68,
+#define OP_reg25 0x69,
+#define OP_reg26 0x6a,
+#define OP_reg27 0x6b,
+#define OP_reg28 0x6c,
+#define OP_reg29 0x6d,
+#define OP_reg30 0x6e,
+#define OP_reg31 0x6f,
+#define OP_breg0(x) 0x70,SLEB128(x),
+#define OP_breg1(x) 0x71,SLEB128(x),
+#define OP_breg2(x) 0x72,SLEB128(x),
+#define OP_breg3(x) 0x73,SLEB128(x),
+#define OP_breg4(x) 0x74,SLEB128(x),
+#define OP_breg5(x) 0x75,SLEB128(x),
+#define OP_breg6(x) 0x76,SLEB128(x),
+#define OP_breg7(x) 0x77,SLEB128(x),
+#define OP_breg8(x) 0x78,SLEB128(x),
+#define OP_breg9(x) 0x79,SLEB128(x),
+#define OP_breg10(x) 0x7a,SLEB128(x),
+#define OP_breg11(x) 0x7b,SLEB128(x),
+#define OP_breg12(x) 0x7c,SLEB128(x),
+#define OP_breg13(x) 0x7d,SLEB128(x),
+#define OP_breg14(x) 0x7e,SLEB128(x),
+#define OP_breg15(x) 0x7f,SLEB128(x),
+#define OP_breg16(x) 0x80,SLEB128(x),
+#define OP_breg17(x) 0x81,SLEB128(x),
+#define OP_breg18(x) 0x82,SLEB128(x),
+#define OP_breg19(x) 0x83,SLEB128(x),
+#define OP_breg20(x) 0x84,SLEB128(x),
+#define OP_breg21(x) 0x85,SLEB128(x),
+#define OP_breg22(x) 0x86,SLEB128(x),
+#define OP_breg23(x) 0x87,SLEB128(x),
+#define OP_breg24(x) 0x88,SLEB128(x),
+#define OP_breg25(x) 0x89,SLEB128(x),
+#define OP_breg26(x) 0x8a,SLEB128(x),
+#define OP_breg27(x) 0x8b,SLEB128(x),
+#define OP_breg28(x) 0x8c,SLEB128(x),
+#define OP_breg29(x) 0x8d,SLEB128(x),
+#define OP_breg30(x) 0x8e,SLEB128(x),
+#define OP_breg31(x) 0x8f,SLEB128(x),
+#define OP_regx(x) 0x90,SLEB128(x),
+#define OP_fbreg(x) 0x91,SLEB128(x),
+#define OP_bregx(x,y) 0x92,ULEB128(x),SLEB128(y),
+#define OP_piece(x) 0x93,ULEB128(x),
+#define OP_deref_size(x) 0x94,VAL1(x),
+#define OP_xderef_size(x) 0x95,VAL1(x),
+#define OP_nop 0x96,
+#define OP_nop_termination 0x96
+#define OP_push_object_address 0x97,
+#define OP_call2(x) 0x98,VAL2(x),
+#define OP_call4(x) 0x99,VAL4(x),
+/* #define OP_call_ref(x) 0x9a,... */
+#define OP_form_tls_address(x) 0x9b,
+#define OP_call_frame_cfa 0x9c,
+#define OP_bit_piece(x) 0x9d,ULEB128(x),
+/* #define OP_implicit_value(x...) 0x9e,... */
+#define OP_stack_value 0x9f,
+#define OP_GNU_push_tls_address 0xe0,
+/* #define OP_GNU_encoded_addr(x...) 0xf1, */
+
+#define ASSERT_TOS_NON0 OP_bra(3) OP_skip(-3)
+#define ASSERT_TOS_0 OP_lit0 OP_eq ASSERT_TOS_NON0
+
+/* Initially there is CFA value on the stack, we want to
+   keep it there at the end.  */
+#define CFI_PROGRAM \
+OP_lit0 OP_nop ASSERT_TOS_0						\
+OP_lit1 ASSERT_TOS_NON0							\
+OP_lit1 OP_const1u(1) OP_eq ASSERT_TOS_NON0				\
+OP_lit16 OP_const2u(16) OP_eq ASSERT_TOS_NON0				\
+OP_lit31 OP_const4u(31) OP_ne ASSERT_TOS_0				\
+OP_lit1 OP_neg OP_const1s(-1) OP_eq ASSERT_TOS_NON0			\
+OP_lit16 OP_neg OP_const2s(-16) OP_ne ASSERT_TOS_0			\
+OP_lit31 OP_const4s(-31) OP_neg OP_ne ASSERT_TOS_0			\
+OP_lit7 OP_dup OP_plus_uconst(2) OP_lit9 OP_eq ASSERT_TOS_NON0		\
+  OP_lit7 OP_eq ASSERT_TOS_NON0						\
+OP_lit20 OP_lit1 OP_drop OP_lit20 OP_eq ASSERT_TOS_NON0			\
+OP_lit17 OP_lit19 OP_over OP_lit17 OP_eq ASSERT_TOS_NON0		\
+  OP_lit19 OP_eq ASSERT_TOS_NON0 OP_lit17 OP_eq ASSERT_TOS_NON0		\
+OP_lit1 OP_lit2 OP_lit3 OP_lit4 OP_pick(2) OP_lit2 OP_eq ASSERT_TOS_NON0\
+  OP_lit4 OP_eq ASSERT_TOS_NON0 OP_lit3 OP_eq ASSERT_TOS_NON0		\
+  OP_pick(0) OP_lit2 OP_eq ASSERT_TOS_NON0				\
+  OP_lit2 OP_eq ASSERT_TOS_NON0 OP_lit1 OP_eq ASSERT_TOS_NON0		\
+OP_lit6 OP_lit12 OP_swap OP_lit6 OP_eq ASSERT_TOS_NON0			\
+  OP_lit12 OP_eq ASSERT_TOS_NON0					\
+OP_lit7 OP_lit8 OP_lit9 OP_rot OP_lit8 OP_eq ASSERT_TOS_NON0		\
+  OP_lit7 OP_eq ASSERT_TOS_NON0 OP_lit9 OP_eq ASSERT_TOS_NON0		\
+OP_lit7 OP_abs OP_lit7 OP_eq ASSERT_TOS_NON0				\
+OP_const1s(-123) OP_abs OP_const1u(123) OP_eq ASSERT_TOS_NON0		\
+OP_lit3 OP_lit6 OP_and OP_lit2 OP_eq ASSERT_TOS_NON0			\
+OP_lit3 OP_lit6 OP_or OP_lit7 OP_eq ASSERT_TOS_NON0			\
+OP_lit17 OP_lit2 OP_minus OP_lit15 OP_eq ASSERT_TOS_NON0		\
+/* Divide is signed truncating toward zero.  */				\
+OP_const1s(-6) OP_const1s(-2) OP_div OP_lit3 OP_eq ASSERT_TOS_NON0	\
+OP_const1s(-7) OP_const1s(3) OP_div OP_const1s(-2)			\
+  OP_eq ASSERT_TOS_NON0							\
+/* Modulo is unsigned.  */						\
+OP_const1s(-6) OP_const1s(-4) OP_mod OP_const1s(-6)			\
+  OP_eq ASSERT_TOS_NON0							\
+OP_const1s(-6) OP_lit4 OP_mod OP_lit2 OP_eq ASSERT_TOS_NON0		\
+OP_lit6 OP_const1s(-4) OP_mod OP_lit6 OP_eq ASSERT_TOS_NON0		\
+/* Signed modulo can be implemented using "over over div mul minus".  */\
+OP_const1s(-6) OP_const1s(-4) OP_over OP_over OP_div OP_mul OP_minus	\
+  OP_const1s(-2) OP_eq ASSERT_TOS_NON0					\
+OP_const1s(-7) OP_lit3 OP_over OP_over OP_div OP_mul OP_minus		\
+  OP_const1s(-1) OP_eq ASSERT_TOS_NON0					\
+OP_lit7 OP_const1s(-3) OP_over OP_over OP_div OP_mul OP_minus		\
+  OP_lit1 OP_eq ASSERT_TOS_NON0						\
+OP_lit16 OP_lit31 OP_plus_uconst(1) OP_mul OP_const2u(512)		\
+  OP_eq ASSERT_TOS_NON0							\
+OP_lit5 OP_not OP_lit31 OP_and OP_lit26 OP_eq ASSERT_TOS_NON0		\
+OP_lit12 OP_lit31 OP_plus OP_const1u(43) OP_eq ASSERT_TOS_NON0		\
+OP_const1s(-6) OP_lit2 OP_plus OP_const1s(-4) OP_eq ASSERT_TOS_NON0	\
+OP_const1s(-6) OP_plus_uconst(3) OP_const1s(-3) OP_eq ASSERT_TOS_NON0	\
+OP_lit16 OP_lit4 OP_shl OP_const2u(256) OP_eq ASSERT_TOS_NON0		\
+OP_lit16 OP_lit3 OP_shr OP_lit2 OP_eq ASSERT_TOS_NON0			\
+OP_const1s(-16) OP_lit3 OP_shra OP_const1s(-2) OP_eq ASSERT_TOS_NON0	\
+OP_lit3 OP_lit6 OP_xor OP_lit5 OP_eq ASSERT_TOS_NON0			\
+OP_lit3 OP_lit6 OP_le ASSERT_TOS_NON0					\
+OP_lit3 OP_lit3 OP_le ASSERT_TOS_NON0					\
+OP_lit6 OP_lit3 OP_le ASSERT_TOS_0					\
+OP_lit3 OP_lit6 OP_lt ASSERT_TOS_NON0					\
+OP_lit3 OP_lit3 OP_lt ASSERT_TOS_0					\
+OP_lit6 OP_lit3 OP_lt ASSERT_TOS_0					\
+OP_lit3 OP_lit6 OP_ge ASSERT_TOS_0					\
+OP_lit3 OP_lit3 OP_ge ASSERT_TOS_NON0					\
+OP_lit6 OP_lit3 OP_ge ASSERT_TOS_NON0					\
+OP_lit3 OP_lit6 OP_gt ASSERT_TOS_0					\
+OP_lit3 OP_lit3 OP_gt ASSERT_TOS_0					\
+OP_lit6 OP_lit3 OP_gt ASSERT_TOS_NON0					\
+OP_const1s(-6) OP_lit1 OP_shr OP_lit0 OP_gt ASSERT_TOS_NON0		\
+OP_const1s(-6) OP_lit1 OP_shra OP_lit0 OP_lt ASSERT_TOS_NON0
+
+#define CFI_ESCAPE_VAL_2(VALUES...) #VALUES
+#define CFI_ESCAPE_VAL_1(VALUES...) CFI_ESCAPE_VAL_2(VALUES)
+#define CFI_ESCAPE_VAL(VALUES...) CFI_ESCAPE_VAL_1(VALUES)
+#define CFI_ESCAPE do { } while (0)
+#define CFI_ARCH_PROGRAM OP_nop_termination
+#ifdef __GCC_HAVE_DWARF2_CFI_ASM
+#if defined (__x86_64__)
+#undef CFI_ESCAPE
+#undef CFI_ARCH_PROGRAM
+#define CFI_ARCH_PROGRAM CFI_PROGRAM OP_lit8 OP_minus OP_nop_termination
+unsigned char cfi_arch_program[] = { CFI_ARCH_PROGRAM };
+extern char verify_it[sizeof (cfi_arch_program) - 0x80 < 0x3f80 ? 1 : -1];
+/* DW_CFA_expression %rip, uleb128(l2-l1), l1: program DW_OP_lit8 DW_OP_minus DW_OP_nop l2: */
+#define CFI_ESCAPE \
+  asm volatile (".cfi_escape 0x10, 0x10, (%P0&0x7f)+0x80, %P0>>7, " \
+		CFI_ESCAPE_VAL (CFI_ARCH_PROGRAM) \
+		: : "i" (sizeof (cfi_arch_program)))
+#elif defined (__i386__)
+#undef CFI_ESCAPE
+#undef CFI_ARCH_PROGRAM
+#define CFI_ARCH_PROGRAM CFI_PROGRAM OP_lit4 OP_minus OP_nop_termination
+unsigned char cfi_arch_program[] = { CFI_ARCH_PROGRAM };
+extern char verify_it[sizeof (cfi_arch_program) - 0x80 < 0x3f80 ? 1 : -1];
+/* DW_CFA_expression %eip, uleb128(l2-l1), l1: program DW_OP_lit4 DW_OP_minus DW_OP_nop l2: */
+#define CFI_ESCAPE \
+  asm volatile (".cfi_escape 0x10, 8, (%P0&0x7f)+0x80, %P0>>7, " \
+		CFI_ESCAPE_VAL (CFI_ARCH_PROGRAM) \
+		: : "i" (sizeof (cfi_arch_program)))
+#endif
+#endif
+static _Unwind_Reason_Code
+force_unwind_stop (int version, _Unwind_Action actions,
+		   _Unwind_Exception_Class exc_class,
+		   struct _Unwind_Exception *exc_obj,
+		   struct _Unwind_Context *context,
+		   void *stop_parameter)
+{
+  if (actions & _UA_END_OF_STACK)
+    abort ();
+  return _URC_NO_REASON;
+}
+
+static void force_unwind ()
+{
+  struct _Unwind_Exception *exc = malloc (sizeof (*exc));
+  memset (&exc->exception_class, 0, sizeof (exc->exception_class));
+  exc->exception_cleanup = 0;
+
+#ifndef __USING_SJLJ_EXCEPTIONS__
+  _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
+#else
+  _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
+#endif
+
+  abort ();
+}
+
+static void handler (void *p __attribute__((unused)))
+{
+  exit (0);
+}
+
+__attribute__((noinline)) static void callme ()
+{
+  CFI_ESCAPE;
+  force_unwind ();
+}
+
+__attribute__((noinline)) static void doit ()
+{
+  char dummy __attribute__((cleanup (handler)));
+  callme ();
+}
+
+int main()
+{ 
+  doit ();
+  abort ();
+}
diff --git a/gdb/testsuite/gdb.dwarf2/pr10770.exp b/gdb/testsuite/gdb.dwarf2/pr10770.exp
new file mode 100644
index 0000000..329ace5
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/pr10770.exp
@@ -0,0 +1,44 @@
+# Copyright 2010 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test DW_OP_call_frame_cfa.
+
+set testfile "pr10770"
+set srcfile ${testfile}.c
+
+if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}]} {
+    return 0
+}
+
+# This test can only be run on targets which use GCC.
+get_compiler_info ${testfile}
+if {![test_compiler_info "gcc-*"]} {
+    return 0
+}
+
+if {![runto_main]} {
+    return -1
+}
+
+# This test also requires DWARF 2.
+get_debug_format
+if {![test_debug_format "DWARF 2"]} {
+    return -1
+}
+
+gdb_test "break force_unwind" "Breakpoint .*" "set breakpoint for pr10770"
+gdb_test "cont" "Breakpoint ., force_unwind .*"
+# If we have the bug, this will hang.
+gdb_test "frame 2" "#2 .* callme .*"
diff --git a/gdb/valarith.c b/gdb/valarith.c
index 2b66f85..ed76b09 100644
--- a/gdb/valarith.c
+++ b/gdb/valarith.c
@@ -1128,6 +1128,18 @@ value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op)
 	      v = v1 < v2;
 	      break;
 
+	    case BINOP_GTR:
+	      v = v1 > v2;
+	      break;
+
+	    case BINOP_LEQ:
+	      v = v1 <= v2;
+	      break;
+
+	    case BINOP_GEQ:
+	      v = v1 >= v2;
+	      break;
+
 	    default:
 	      error (_("Invalid binary operation on numbers."));
 	    }
@@ -1237,10 +1249,26 @@ value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op)
 	      v = v1 == v2;
 	      break;
 
+            case BINOP_NOTEQUAL:
+              v = v1 != v2;
+              break;
+
 	    case BINOP_LESS:
 	      v = v1 < v2;
 	      break;
 
+	    case BINOP_GTR:
+	      v = v1 > v2;
+	      break;
+
+	    case BINOP_LEQ:
+	      v = v1 <= v2;
+	      break;
+
+	    case BINOP_GEQ:
+	      v = v1 >= v2;
+	      break;
+
 	    default:
 	      error (_("Invalid binary operation on numbers."));
 	    }