From: Tom Hughes <tom@compton.nu>
Date: Wed, 8 Apr 2009 15:06:34 +0000 (+0000)
Subject: Handle DW_CFA_same_value opcodes in DWARF CFI data.
X-Git-Tag: svn/VALGRIND_3_5_0~824
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d3d43abbe5be09eea0c283ce38b20a2f56dd6bf0;p=thirdparty%2Fvalgrind.git

Handle DW_CFA_same_value opcodes in DWARF CFI data.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@9520
---

diff --git a/coregrind/m_debuginfo/readdwarf.c b/coregrind/m_debuginfo/readdwarf.c
index 2edaf80944..3bb776ec37 100644
--- a/coregrind/m_debuginfo/readdwarf.c
+++ b/coregrind/m_debuginfo/readdwarf.c
@@ -2912,6 +2912,17 @@ static Int run_CF_instruction ( /*MOD*/UnwindContext* ctx,
             VG_(printf)("  rci:DW_CFA_undefined\n");
          break;
 
+      case DW_CFA_same_value:
+         reg = read_leb128( &instr[i], &nleb, 0);
+         i += nleb;
+         if (reg < 0 || reg >= N_CFI_REGS) 
+            return 0; /* fail */
+         ctx->reg[reg].tag = RR_Same;
+         ctx->reg[reg].arg = 0;
+         if (di->ddump_frames)
+            VG_(printf)("  rci:DW_CFA_same_value\n");
+         break;
+
       case DW_CFA_GNU_args_size:
          /* No idea what is supposed to happen.  gdb-6.3 simply
             ignores these. */