From d05b699c06939d276f2946f9eea34ee91e403d06 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 11 Oct 2018 23:55:44 +0000
Subject: Support additional forms

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65008 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 addr2line.c | 58 ++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 38 insertions(+), 20 deletions(-)

(limited to 'addr2line.c')

diff --git a/addr2line.c b/addr2line.c
index 786da0abfc..99f50f56c7 100644
--- a/addr2line.c
+++ b/addr2line.c
@@ -846,6 +846,13 @@ read_uint16(char **ptr) {
     return get_uint16(p);
 }
 
+static uint32_t
+read_uint24(char **ptr) {
+    const unsigned char *p = (const unsigned char *)*ptr;
+    *ptr = (char *)(p + 3);
+    return (get_uint8(p) << 16) | get_uint16(p+1);
+}
+
 static uint32_t
 read_uint32(char **ptr) {
     const unsigned char *p = (const unsigned char *)*ptr;
@@ -1050,7 +1057,14 @@ debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoVa
         set_uint_value(v, read_uleb128(reader));
         break;
       case DW_FORM_ref_addr:
-        goto fail;
+        if (reader->address_size == 4) {
+            set_uint_value(v, read_uint32(&reader->p));
+        } else if (reader->address_size == 8) {
+            set_uint_value(v, read_uint64(&reader->p));
+        } else {
+            fprintf(stderr,"unknown address_size:%d", reader->address_size);
+            abort();
+        }
         break;
       case DW_FORM_ref1:
         set_uint_value(v, read_uint8(&reader->p));
@@ -1065,10 +1079,11 @@ debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoVa
         set_uint_value(v, read_uint64(&reader->p));
         break;
       case DW_FORM_ref_udata:
-        goto fail;
+        set_uint_value(v, uleb128(&reader->p));
         break;
       case DW_FORM_indirect:
-        goto fail;
+        /* TODO: read the refered value */
+        set_uint_value(v, uleb128(&reader->p));
         break;
       case DW_FORM_sec_offset:
         set_uint_value(v, read_uint(reader)); /* offset */
@@ -1090,63 +1105,66 @@ debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoVa
         set_uint_value(v, 1);
         break;
       case DW_FORM_strx:
-        goto fail;
+        set_uint_value(v, uleb128(&reader->p));
         break;
       case DW_FORM_addrx:
-        goto fail;
+        /* TODO: read .debug_addr */
+        set_uint_value(v, uleb128(&reader->p));
         break;
       case DW_FORM_ref_sup4:
-        goto fail;
+        set_uint_value(v, read_uint32(&reader->p));
         break;
       case DW_FORM_strp_sup:
         set_uint_value(v, read_uint(reader));
         //*p = reader->sup_file + reader->sup_str->sh_offset + ret;
         break;
       case DW_FORM_data16:
-        goto fail;
+        v->size = 16;
+        set_data_value(v, reader->p);
+        reader->p += v->size;
         break;
       case DW_FORM_line_strp:
         set_uint_value(v, read_uint(reader));
         //*p = reader->file + reader->line->sh_offset + ret;
         break;
       case DW_FORM_ref_sig8:
-        goto fail;
+        set_uint_value(v, read_uint64(&reader->p));
         break;
       case DW_FORM_implicit_const:
-        goto fail;
+        set_sint_value(v, read_sleb128(&reader->q));
         break;
       case DW_FORM_loclistx:
-        goto fail;
+        set_uint_value(v, read_uleb128(&reader->q));
         break;
       case DW_FORM_rnglistx:
-        goto fail;
+        set_uint_value(v, read_uleb128(&reader->q));
         break;
       case DW_FORM_ref_sup8:
-        goto fail;
+        set_uint_value(v, read_uint64(&reader->p));
         break;
       case DW_FORM_strx1:
-        goto fail;
+        set_uint_value(v, read_uint8(&reader->p));
         break;
       case DW_FORM_strx2:
-        goto fail;
+        set_uint_value(v, read_uint16(&reader->p));
         break;
       case DW_FORM_strx3:
-        goto fail;
+        set_uint_value(v, read_uint24(&reader->p));
         break;
       case DW_FORM_strx4:
-        goto fail;
+        set_uint_value(v, read_uint32(&reader->p));
         break;
       case DW_FORM_addrx1:
-        goto fail;
+        set_uint_value(v, read_uint8(&reader->p));
         break;
       case DW_FORM_addrx2:
-        goto fail;
+        set_uint_value(v, read_uint16(&reader->p));
         break;
       case DW_FORM_addrx3:
-        goto fail;
+        set_uint_value(v, read_uint24(&reader->p));
         break;
       case DW_FORM_addrx4:
-        goto fail;
+        set_uint_value(v, read_uint32(&reader->p));
         break;
       case 0:
         goto fail;
-- 
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