diff options
| author | Waldemar Brodkorb <wbx@openadk.org> | 2016-04-21 01:25:29 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-06-30 03:24:42 +0200 |
| commit | ee92c0fe5c1b9d59508273916e2c9a75b68dbc13 (patch) | |
| tree | 65a22258b12f84325910fc2ad47e2b02696ef593 /ldso/ldso/nds32/resolve.S | |
| parent | dd46699e46decb7273f44dc2cbf307f096dc39e8 (diff) | |
nds32: add support for new architecture
Add support for Andes Technology NDS32 architecture.
See here http://www.andestech.com/en/index/index.htm for more
informaton. Verification of the port from an older uClibc
port was done on a sponsored AG101p board.
The testsuite only has 5 errors, three are related to
an existing bug in dlclose() with LT.old, also happening
on cris32 and m68k.
Failures to fallocate/posix_fallocate are unresolved.
Thanks to Andes Technology sponsoring the hardware and
being very helpful while doing the uClibc-ng porting.
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Diffstat (limited to 'ldso/ldso/nds32/resolve.S')
| -rw-r--r-- | ldso/ldso/nds32/resolve.S | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/ldso/ldso/nds32/resolve.S b/ldso/ldso/nds32/resolve.S new file mode 100644 index 000000000..8c53850d7 --- /dev/null +++ b/ldso/ldso/nds32/resolve.S @@ -0,0 +1,76 @@ +/* + * Copyright (C) 2016 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) +# define STACK_PUSH +# define STACK_POP +#else +# define STACK_PUSH addi $sp, $sp, -24 +# define STACK_POP addi $sp, $sp, 24 +#endif + + .text + .align 4 ! 16 byte boundary + .globl _dl_linux_resolve + .type _dl_linux_resolve,#function + .pic + +_dl_linux_resolve: + ! we get called with + ! lp contains the return address from this call + ! r16 contains offset to target reloc entry + ! r17 contains GOT[1] (identity of taget lib) + ! ta is GOT[2] (starting address of this function) + + ! save arguments r0 - r5 and gp, lp + smw.adm $r0, [$sp], $r5, 6 + + ! init gp +#ifdef __NDS32_N1213_43U1H__ + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_+4) + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_+8) + add $gp, $ta, $gp +#else + mfusr $ta, $PC + sethi $gp, HI20(_GLOBAL_OFFSET_TABLE_+4) + ori $gp, $gp, LO12(_GLOBAL_OFFSET_TABLE_+8) + add $gp, $ta, $gp +#endif + + ! #ifdef __NDS32_ABI_1__ + ! adjust stack + !addi $sp, $sp, -24 + STACK_PUSH + ! #endif + + ! set arguments + addi $r0, $r17, 0 + !addi $r1, $r16, 0 + slli $r1, $r16, 2 + slli $r16, $r16, 3 + add $r1, $r1, $r16 + + ! comment out profiling argument + !addi $r2, $lp, 0 + + ! call fixup routine + bal _dl_linux_resolver@PLT + + ! save the return + addi $ta, $r0, 0 + + ! #ifdef __NDS32_ABI_1__ + ! adjust sp + !addi $sp, $sp, 24 + STACK_POP + ! #endif + + ! reload registers + lmw.bim $r0, [$sp], $r5, 6 + + ! jump to the newly found address + jr $ta + +.size _dl_linux_resolve, .-_dl_linux_resolve |