/usr/src/binutils/patches/infinity-notes.diff is in binutils-source 2.30-15ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 | # git clone https://gitlab.com/gbenson/binutils-gdb.git gdb/src
# git diff 1f1c02597cc199227226251a2ea51fe5f44b4d6d ec7642f5d7ba9bdbc35f08f3ffa3c360bd4618d0
Index: b/include/elf/common.h
===================================================================
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -704,6 +704,7 @@
#define NT_GNU_BUILD_ID 3 /* Generated by ld --build-id. */
#define NT_GNU_GOLD_VERSION 4 /* Generated by gold. */
#define NT_GNU_PROPERTY_TYPE_0 5 /* Generated by gcc. */
+#define NT_GNU_INFINITY 8995 /* Generated by i8c. */
#define NT_GNU_BUILD_ATTRIBUTE_OPEN 0x100
#define NT_GNU_BUILD_ATTRIBUTE_FUNC 0x101
Index: b/binutils/readelf.c
===================================================================
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -16716,6 +16716,8 @@ get_gnu_elf_note_type (unsigned e_type)
return _("NT_GNU_BUILD_ATTRIBUTE_OPEN");
case NT_GNU_BUILD_ATTRIBUTE_FUNC:
return _("NT_GNU_BUILD_ATTRIBUTE_FUNC");
+ case NT_GNU_INFINITY:
+ return _("NT_GNU_INFINITY (Infinity function)");
default:
{
static char buff[64];
@@ -16925,6 +16927,133 @@ next:
printf ("\n");
}
+#define I8_CHUNK_SIGNATURE 1
+#define I8_CHUNK_STRINGS 4
+
+typedef enum
+{
+ I8_NOTE_OK,
+ I8_NOTE_CORRUPT,
+ I8_NOTE_UNHANDLED,
+}
+i8_err_e;
+
+static i8_err_e
+infinity_get_string (const char **result,
+ unsigned char **ptr, unsigned char *limit,
+ unsigned char *table_start,
+ unsigned char *table_limit)
+{
+ dwarf_vma offset;
+ unsigned int length;
+ const char *c;
+
+ /* Read the offset. */
+ if (*ptr > limit)
+ return I8_NOTE_CORRUPT;
+
+ offset = read_uleb128 (*ptr, &length, limit);
+ *ptr += length;
+ if (*ptr > limit)
+ return I8_NOTE_CORRUPT;
+
+ /* Get the string. */
+ *result = (const char *) (table_start + offset);
+
+ /* Check the result. */
+ for (c = *result; c < (const char *) table_limit; c++)
+ {
+ if (*c == '\0')
+ return I8_NOTE_OK;
+
+ if (*c < ' ' || *c > '~')
+ return I8_NOTE_UNHANDLED;
+ }
+
+ return I8_NOTE_CORRUPT;
+}
+
+static i8_err_e
+print_infinity_note (Elf_Internal_Note *pnote)
+{
+ unsigned char *ptr = (unsigned char *) pnote->descdata;
+ unsigned char *limit = ptr + pnote->descsz;
+ unsigned char *sig_start = NULL;
+ unsigned char *str_start = NULL;
+ unsigned char *sig_limit, *str_limit;
+ const char *provider, *name, *ptypes, *rtypes;
+ i8_err_e status;
+
+ /* Locate the info and string table chunks. */
+ while (ptr < limit)
+ {
+ dwarf_vma type_id, version, size;
+ unsigned int length;
+
+ type_id = read_uleb128 (ptr, &length, limit);
+ ptr += length;
+ if (ptr >= limit)
+ return I8_NOTE_CORRUPT;
+
+ version = read_uleb128 (ptr, &length, limit);
+ ptr += length;
+ if (ptr >= limit)
+ return I8_NOTE_CORRUPT;
+
+ size = read_uleb128 (ptr, &length, limit);
+ ptr += length;
+ if (ptr + size > limit)
+ return I8_NOTE_CORRUPT;
+
+ switch (type_id)
+ {
+ case I8_CHUNK_SIGNATURE:
+ if (sig_start != NULL || (version != 1 && version != 2))
+ return I8_NOTE_UNHANDLED;
+
+ sig_start = ptr;
+ sig_limit = ptr + size;
+ break;
+
+ case I8_CHUNK_STRINGS:
+ if (str_start != NULL || version != 1)
+ return I8_NOTE_UNHANDLED;
+
+ str_start = ptr;
+ str_limit = ptr + size;
+ break;
+ }
+
+ ptr += size;
+ }
+ if (sig_start == NULL || str_start == NULL)
+ return I8_NOTE_UNHANDLED;
+
+ ptr = sig_start;
+ status = infinity_get_string (&provider,
+ &ptr, sig_limit,
+ str_start, str_limit);
+ if (status != I8_NOTE_OK)
+ return status;
+ status = infinity_get_string (&name, &ptr, sig_limit,
+ str_start, str_limit);
+ if (status != I8_NOTE_OK)
+ return status;
+ status = infinity_get_string (&ptypes, &ptr, sig_limit,
+ str_start, str_limit);
+ if (status != I8_NOTE_OK)
+ return status;
+ status = infinity_get_string (&rtypes, &ptr, sig_limit,
+ str_start, str_limit);
+ if (status != I8_NOTE_OK)
+ return status;
+
+ printf (_(" Signature: %s::%s(%s)%s\n"),
+ provider, name, ptypes, rtypes);
+
+ return I8_NOTE_OK;
+}
+
static bfd_boolean
print_gnu_note (Filedata * filedata, Elf_Internal_Note *pnote)
{
@@ -17042,6 +17171,24 @@ print_gnu_note (Filedata * filedata, Elf
printf ("\n");
}
break;
+
+ case NT_GNU_INFINITY:
+ {
+ switch (print_infinity_note (pnote))
+ {
+ case I8_NOTE_OK:
+ break;
+
+ case I8_NOTE_CORRUPT:
+ printf (_(" <corrupt note>\n"));
+ break;
+
+ case I8_NOTE_UNHANDLED:
+ printf (_(" <unhandled note>\n"));
+ break;
+ }
+ break;
+ }
}
return TRUE;
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