diff options
Diffstat (limited to 'gdb/dwarf2/read.c')
| -rw-r--r-- | gdb/dwarf2/read.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c index 474ed4d..4ff2a4c 100644 --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -1277,8 +1277,6 @@ static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, unsigned int *); -static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); - static LONGEST read_checked_initial_length_and_offset (bfd *, const gdb_byte *, const struct comp_unit_head *, unsigned int *, unsigned int *); @@ -19016,68 +19014,6 @@ read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, return retval; } -/* Read the initial length from a section. The (draft) DWARF 3 - specification allows the initial length to take up either 4 bytes - or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 - bytes describe the length and all offsets will be 8 bytes in length - instead of 4. - - An older, non-standard 64-bit format is also handled by this - function. The older format in question stores the initial length - as an 8-byte quantity without an escape value. Lengths greater - than 2^32 aren't very common which means that the initial 4 bytes - is almost always zero. Since a length value of zero doesn't make - sense for the 32-bit format, this initial zero can be considered to - be an escape value which indicates the presence of the older 64-bit - format. As written, the code can't detect (old format) lengths - greater than 4GB. If it becomes necessary to handle lengths - somewhat larger than 4GB, we could allow other small values (such - as the non-sensical values of 1, 2, and 3) to also be used as - escape values indicating the presence of the old format. - - The value returned via bytes_read should be used to increment the - relevant pointer after calling read_initial_length(). - - [ Note: read_initial_length() and read_offset() are based on the - document entitled "DWARF Debugging Information Format", revision - 3, draft 8, dated November 19, 2001. This document was obtained - from: - - http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf - - This document is only a draft and is subject to change. (So beware.) - - Details regarding the older, non-standard 64-bit format were - determined empirically by examining 64-bit ELF files produced by - the SGI toolchain on an IRIX 6.5 machine. - - - Kevin, July 16, 2002 - ] */ - -static LONGEST -read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) -{ - LONGEST length = bfd_get_32 (abfd, buf); - - if (length == 0xffffffff) - { - length = bfd_get_64 (abfd, buf + 4); - *bytes_read = 12; - } - else if (length == 0) - { - /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ - length = bfd_get_64 (abfd, buf); - *bytes_read = 8; - } - else - { - *bytes_read = 4; - } - - return length; -} - /* Cover function for read_initial_length. Returns the length of the object at BUF, and stores the size of the initial length in *BYTES_READ and stores the size that offsets will be in |