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/*
* Copyright (C) 2016-2017 Andes Technology, Inc.
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <sysdep.h>
#include "ucontext_i.h"
ENTRY(__setcontext)
move $r4, $r0
#ifdef __NDS32_ABI_2FP_PLUS__
addi $r0, $r4, UCONTEXT_FDREGS
/* Case switch for $r20 as $fpcfg.freg. */
beqz $r20, .LCFG0 /* Branch if $fpcfg.freg = 0b00. */
xori $r15, $r20, #0b10
beqz $r15, .LCFG2 /* Branch if $fpcfg.freg = 0b10. */
srli $r20, $r20, #0b01
beqz $r20, .LCFG1 /* Branch if $fpcfg.freg = 0b01. */
/* Fall-through if $fpcfg.freg = 0b11. */
.LCFG3:
fldi $fd31, [$r0 + 248]
fldi $fd30, [$r0 + 240]
fldi $fd29, [$r0 + 232]
fldi $fd28, [$r0 + 224]
fldi $fd27, [$r0 + 216]
fldi $fd26, [$r0 + 208]
fldi $fd25, [$r0 + 200]
fldi $fd24, [$r0 + 192]
.LCFG2:
fldi $fd10, [$r0 + 80]
fldi $fd9, [$r0 + 72]
fldi $fd8, [$r0 + 64]
.LCFG1:
fldi $fd7, [$r0 + 56]
fldi $fd6, [$r0 + 48]
fldi $fd5, [$r0 + 40]
fldi $fd4, [$r0 + 32]
.LCFG0:
fldi $fd3, [$r0 + 24]
/*save fpcsr*/
lwi $r1, [$r0 + 0x100]
fmtcsr $r1
#endif /* __NDS32_ABI_2FP_PLUS__ */
/* sigprocmask (SIG_BLOCK, &sc->sc_mask, NULL). */
move $r0, SIG_SETMASK
addi $r1, $r4, UCONTEXT_SIGMASK
move $r2, 0
move $r3, _NSIG8
syscall SYS_ify(rt_sigprocmask)
bnez $r0, 1f
move $r0, $r4
addi $r15, $r4, UCONTEXT_GREGS + 4
lmw.bim $r1, [$r15], $r14
addi $r15, $r15, 4
lmw.bim $r16, [$r15], $r25, #0xf
lwi $r15, [$r0 + UCONTEXT_PC]
push $r1
cfi_adjust_cfa_offset (4)
move $r1, $r0
lwi $r0, [$r1 + UCONTEXT_GREGS]
pop $r1
cfi_adjust_cfa_offset (-4)
jr $r15
1:
move $r0, -1
ret
END(__setcontext)
weak_alias (__setcontext, setcontext)
libc_hidden_def(__setcontext)
ENTRY (__startcontext)
move $r0, $r6
beqz $r0, 1f
jal HIDDEN_JUMPTARGET(__setcontext)
1:
move $r0, 0
j HIDDEN_JUMPTARGET(exit)
END (__startcontext)
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