Eric Pouech : winedump: Fix computation of signed integers in codeview symbol's annotations.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 27b7a96d9b0b4a30345ce82171439f3c5fe6cd59
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=27b7a96d9b0b4a30345ce82171439f3c5fe6cd59

Author: Eric Pouech <eric.pouech at gmail.com>
Date:   Mon Nov  8 14:57:18 2021 +0100

winedump: Fix computation of signed integers in codeview symbol's annotations.

Signed-off-by: Eric Pouech <eric.pouech at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 tools/winedump/msc.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/winedump/msc.c b/tools/winedump/msc.c
index 79dd022a088..40daf4d50d5 100644
--- a/tools/winedump/msc.c
+++ b/tools/winedump/msc.c
@@ -1221,6 +1221,11 @@ static unsigned binannot_uncompress(const unsigned char** pptr)
     return res;
 }
 
+static inline int binannot_getsigned(unsigned i)
+{
+    return (i & 1) ? -(int)(i >> 1) : (i >> 1);
+}
+
 static void dump_binannot(const unsigned char* ba, const char* last, const char* pfx)
 {
     while (ba < (const unsigned char*)last)
@@ -1248,7 +1253,7 @@ static void dump_binannot(const unsigned char* ba, const char* last, const char*
             printf("%sChangeFile %u\n", pfx, binannot_uncompress(&ba));
             break;
         case BA_OP_ChangeLineOffset:
-            printf("%sChangeLineOffset %d\n", pfx, binannot_uncompress(&ba));
+            printf("%sChangeLineOffset %d\n", pfx, binannot_getsigned(binannot_uncompress(&ba)));
             break;
         case BA_OP_ChangeLineEndDelta:
             printf("%sChangeLineEndDelta %u\n", pfx, binannot_uncompress(&ba));
@@ -1265,7 +1270,7 @@ static void dump_binannot(const unsigned char* ba, const char* last, const char*
         case BA_OP_ChangeCodeOffsetAndLineOffset:
             {
                 unsigned p1 = binannot_uncompress(&ba);
-                printf("%sChangeCodeOffsetAndLineOffset %u %u (0x%x)\n", pfx, p1 & 0xf, p1 >> 4, p1);
+                printf("%sChangeCodeOffsetAndLineOffset %u %u (0x%x)\n", pfx, p1 & 0xf, binannot_getsigned(p1 >> 4), p1);
             }
             break;
         case BA_OP_ChangeCodeLengthAndCodeOffset: