source: npl/system/klibc/patches/0003-add-mips64-support-arch-mips64-specific.patch @ 892871d

Last change on this file since 892871d was c5c522c, checked in by Edwin Eefting <edwin@datux.nl>, 8 years ago

initial commit, transferred from cleaned syn3 svn tree
  • Property mode set to 100644
File size: 2.9 KB

  • usr/klibc/arch/mips64/MCONFIG 

    From: Dejan Latinovic <Dejan.Latinovic@imgtec.com>
Date: Thu, 5 Mar 2015 16:51:45 -0800
Subject: [PATCH 3/3] add-mips64-support-arch-mips64-specific
Origin: https://git.kernel.org/cgit/libs/klibc/klibc.git/commit/?id=3438d861da2e6939a6b0d454ffe247c19ead5993

Description: Adding mips64 specific chagnes.
Modeled on mips 32 and adapted for 64 bit ABI.
 - MCONFIG:  using existing klibc.ld scrpit
 - crt0.S:   adapted gp initialization
 - setjmp.S: do not save floating-point state
---
 usr/klibc/arch/mips64/MCONFIG  |  2 ++
 usr/klibc/arch/mips64/crt0.S   | 31 ++++++++++++++++++++++++++
 usr/klibc/arch/mips64/setjmp.S | 50 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 83 insertions(+)
 create mode 100644 usr/klibc/arch/mips64/crt0.S
 create mode 100644 usr/klibc/arch/mips64/setjmp.S

diff --git a/usr/klibc/arch/mips64/MCONFIG b/usr/klibc/arch/mips64/MCONFIG
index 5c50b8d..b37cc6a 100644
    a b  
    99
    1010KLIBCOPTFLAGS += -Os
    1111KLIBCBITSIZE  = 64
     12
     13KLIBCSHAREDFLAGS  = -T $(src)/arch/mips/klibc.ld

  • new file usr/klibc/arch/mips64/crt0.S 

    diff --git a/usr/klibc/arch/mips64/crt0.S b/usr/klibc/arch/mips64/crt0.S
new file mode 100644
index 0000000..775a919
    - +  
     1#
     2# arch/mips64/crt0.S
     3#
     4# Does arch-specific initialization and invokes __libc_init
     5# with the appropriate arguments.
     6#
     7# See __static_init.c or __shared_init.c for the expected
     8# arguments.
     9#
     10
     11#include <machine/asm.h>
     12
     13NESTED(__start, 64, sp)
     14        daddiu  sp,sp,-64
     15        sd      zero, 32(sp)
     16
     17                                        # Initialize gp
     18        lui gp,%highest(_gp)            # load highest "halfword"
     19        daddiu gp,gp,%higher(_gp)       # merge next "halfword"
     20        dsll gp,gp,16                   # shift by one halfword
     21        daddiu gp,gp,%hi(_gp)           # merge next "halfword"
     22        dsll gp,gp,16                   # shift into final position
     23        daddiu gp,gp,%lo(_gp)           # merge lowest "halfword"
     24
     25        daddiu  a0, sp, 64              # Pointer to ELF entry structure
     26        move    a1, v0                  # Kernel-provided atexit() pointer
     27
     28        ld  t9, %call16(__libc_init)(gp)
     29        jalr t9
     30
     31        END(__start)

  • new file usr/klibc/arch/mips64/setjmp.S 

    diff --git a/usr/klibc/arch/mips64/setjmp.S b/usr/klibc/arch/mips64/setjmp.S
new file mode 100644
index 0000000..5d902e2
    - +  
     1#
     2# arch/mips64/setjmp.S
     3#
     4# setjmp/longjmp for the MIPS architecture
     5#
     6# The jmp_buf is assumed to contain the following, in order:
     7#       s0..s7
     8#       gp
     9#       sp
     10#       s8
     11#       ra
     12#
     13
     14#include <machine/asm.h>
     15
     16LEAF(setjmp)
     17        sd      s0,  0(a0)
     18        sd      s1,  8(a0)
     19        sd      s2, 16(a0)
     20        sd      s3, 24(a0)
     21        sd      s4, 32(a0)
     22        sd      s5, 40(a0)
     23        sd      s6, 48(a0)
     24        sd      s7, 56(a0)
     25        sd      gp, 64(a0)
     26        sd      sp, 72(a0)
     27        sd      s8, 80(a0)
     28        sd      ra, 88(a0)
     29        move    v0, zero
     30        jr      ra
     31
     32        END(setjmp)
     33
     34LEAF(longjmp)
     35        ld      s0,  0(a0)
     36        ld      s1,  8(a0)
     37        ld      s2, 16(a0)
     38        ld      s3, 24(a0)
     39        ld      s4, 32(a0)
     40        ld      s5, 40(a0)
     41        ld      s6, 48(a0)
     42        ld      s7, 56(a0)
     43        ld      gp, 64(a0)
     44        ld      sp, 72(a0)
     45        ld      s8, 80(a0)
     46        ld      ra, 88(a0)
     47        move    v0, a1
     48        jr      ra
     49
     50        END(longjmp)
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