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Message-ID: <CAKd0kD+cuBqn3T=292aUS9p9QSDbBbfs3RB8xHrEVotmQzG8ZQ@mail.gmail.com>
Date: Fri, 22 Jan 2016 13:21:00 +0530
From: Mahesh Bodapati <maheshbodapati90@...il.com>
To: Felix Fietkau <nbd@...nwrt.org>, musl@...ts.openwall.com
Subject: Re: musl mips n64 dynamic build
yes,This is working.MIPS64 relocation type is a combination of 3 relocation
types each of size 1 byte.
typedef struct
{
Elf32_Word r_sym; /* Symbol index */
unsigned char r_ssym; /* Special symbol for 2nd relocation */
unsigned char r_type3; /* 3rd relocation type */
unsigned char r_type2; /* 2nd relocation type */
unsigned char r_type1; /* 1st relocation type */
} _Elf64_Mips_R_Info;
(R_MIPS_64 << 8) | R_MIPS_REL32 is (18 << 8) | 3 = 4611
Thanks,
Mahesh
On Fri, Jan 22, 2016 at 12:41 AM, Felix Fietkau <nbd@...nwrt.org> wrote:
> On 2015-10-27 02:30, Rich Felker wrote:
> > On Tue, Oct 20, 2015 at 12:40:21PM +0200, Szabolcs Nagy wrote:
> >> * Mahesh Bodapati <maheshbodapati90@...il.com> [2015-10-20 15:14:04
> +0530]:
> >> > Error relocating libc.so: unsupported relocation type 4611
> >> > Error relocating libc.so: unsupported relocation type 4611
> >> > Error relocating libc.so: unsupported relocation type 4611
> >> ....
> >> > *#define REL_SYM_OR_REL R_MIPS_64 /*I didn't see
> R_MIPS_REL64 so
> >> > It is a composition of R_MIPS_64 and R_MIPS_REL relocations but i
> didn't
> >> > see R_MIPS_REL in elf.h. *
> >> > *
> >> > how can i define REL_SYM_OR_REL for mips n64 abi */*
> >>
> >> i don't know what the n64 abi docs says, but this might be a hint:
> >>
> >> glibc/sysdeps/mips/dl-machine.h has
> >>
> >> #if _MIPS_SIM == _ABI64
> >> case (R_MIPS_64 << 8) | R_MIPS_REL32:
> >> #else
> >> case R_MIPS_REL32:
> >> #endif
> >>
> >> where R_MIPS_64 << 8 | R_MIPS_REL32 is 4611.
> >
> > This seems right. Mahesh, did you get a chance to try this? Does it
> > help?
> Manesh, any update on this? I'm really interested in musl MIPS64 support
> for OpenWrt - I'd like to move away from glibc for that arch.
> I can also help with testing and bugfixing once this is getting
> somewhere...
>
> Thanks,
>
> - Felix
>
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