ELF Tool Chain / Tickets / #559 Better MIPS64 support

#559 Better MIPS64 support

Milestone: RELEASE_1_0

Status: new

Owner: Joseph Koshy

Labels: mips64 (1)

Resolution:

Component: libelf

Priority:

Version:

Type:

Updated: 2019-06-29

Created: 2018-07-19

Creator: Joseph Koshy

Private: No

The MIPS64 ABI has various quirks that we need to support.

The format of 'Rel' and 'Rela' records is slightly different in this ABI. Instead of a 64 bit r_info field, this ABI uses an Elf64_Word r_sym followed by 4 byte values r_ssym, r_type3, r_type2, and r_type.

We need to adjust the way libelf translates these structures between their memory and file representation.

For users, we may want to consider offering a struct Elf64_Rel_mips and/or accessor macros for the r_info field, that makes programming more convenient.

We also need to add the symbols mentioned in the MIPS Elf64 ABI documentation, e.g. the definition at ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/elf64-2.1.ps.

Joseph Koshy - 2018-07-19

Related ticket: #532.

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Ed Maste - 2019-06-29

See FreeBSD commit:
elfcopy: fix little-endian MIPS64 objects
https://reviews.freebsd.org/D15734
https://reviews.freebsd.org/rS344855
https://reviews.freebsd.org/rS339083
https://reviews.freebsd.org/rS339473

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Better MIPS64 support

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