/* Save current context. Copyright (C) 2004-2023 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library. If not, see . */ #include #include /* ??? Should be a better place for this that's asm friendly. */ #define SIG_BLOCK 1 ENTRY (__getcontext) #ifdef PROF ldgp gp, 0(pv) .set noat lda AT, _mcount jsr AT, (AT), _mcount .set at .prologue 1 #else .prologue 0 #endif bsr $0, __getcontext_x mov $31, $0 ret END(__getcontext) weak_alias (__getcontext, getcontext) /* An internal routine used by getcontext and setcontext. The incomming return address register is $0. */ .align 4 .globl __getcontext_x .hidden __getcontext_x .usepv __getcontext_x, no cfi_startproc cfi_return_column (64) __getcontext_x: cfi_register (64, 0) .set noat /* Return value of getcontext. $0 is the only register whose value is not preserved. */ stq $31, UC_SIGCTX+SC_REGS($16) /* Store all registers into the context. */ stq $1, UC_SIGCTX+SC_REGS+1*8($16) stq $2, UC_SIGCTX+SC_REGS+2*8($16) stq $3, UC_SIGCTX+SC_REGS+3*8($16) stq $4, UC_SIGCTX+SC_REGS+4*8($16) stq $5, UC_SIGCTX+SC_REGS+5*8($16) stq $6, UC_SIGCTX+SC_REGS+6*8($16) stq $7, UC_SIGCTX+SC_REGS+7*8($16) stq $8, UC_SIGCTX+SC_REGS+8*8($16) stq $9, UC_SIGCTX+SC_REGS+9*8($16) stq $10, UC_SIGCTX+SC_REGS+10*8($16) stq $11, UC_SIGCTX+SC_REGS+11*8($16) stq $12, UC_SIGCTX+SC_REGS+12*8($16) stq $13, UC_SIGCTX+SC_REGS+13*8($16) stq $14, UC_SIGCTX+SC_REGS+14*8($16) stq $15, UC_SIGCTX+SC_REGS+15*8($16) stq $16, UC_SIGCTX+SC_REGS+16*8($16) stq $17, UC_SIGCTX+SC_REGS+17*8($16) stq $18, UC_SIGCTX+SC_REGS+18*8($16) stq $19, UC_SIGCTX+SC_REGS+19*8($16) stq $20, UC_SIGCTX+SC_REGS+20*8($16) stq $21, UC_SIGCTX+SC_REGS+21*8($16) stq $22, UC_SIGCTX+SC_REGS+22*8($16) stq $23, UC_SIGCTX+SC_REGS+23*8($16) stq $24, UC_SIGCTX+SC_REGS+24*8($16) stq $25, UC_SIGCTX+SC_REGS+25*8($16) stq $26, UC_SIGCTX+SC_REGS+26*8($16) stq $27, UC_SIGCTX+SC_REGS+27*8($16) stq $28, UC_SIGCTX+SC_REGS+28*8($16) stq $29, UC_SIGCTX+SC_REGS+29*8($16) stq $30, UC_SIGCTX+SC_REGS+30*8($16) stq $31, UC_SIGCTX+SC_REGS+31*8($16) stt $f0, UC_SIGCTX+SC_FPREGS+0*8($16) stt $f1, UC_SIGCTX+SC_FPREGS+1*8($16) stt $f2, UC_SIGCTX+SC_FPREGS+2*8($16) stt $f3, UC_SIGCTX+SC_FPREGS+3*8($16) stt $f4, UC_SIGCTX+SC_FPREGS+4*8($16) stt $f5, UC_SIGCTX+SC_FPREGS+5*8($16) stt $f6, UC_SIGCTX+SC_FPREGS+6*8($16) stt $f7, UC_SIGCTX+SC_FPREGS+7*8($16) stt $f8, UC_SIGCTX+SC_FPREGS+8*8($16) stt $f9, UC_SIGCTX+SC_FPREGS+9*8($16) stt $f10, UC_SIGCTX+SC_FPREGS+10*8($16) stt $f11, UC_SIGCTX+SC_FPREGS+11*8($16) stt $f12, UC_SIGCTX+SC_FPREGS+12*8($16) stt $f13, UC_SIGCTX+SC_FPREGS+13*8($16) stt $f14, UC_SIGCTX+SC_FPREGS+14*8($16) stt $f15, UC_SIGCTX+SC_FPREGS+15*8($16) stt $f16, UC_SIGCTX+SC_FPREGS+16*8($16) stt $f17, UC_SIGCTX+SC_FPREGS+17*8($16) stt $f18, UC_SIGCTX+SC_FPREGS+18*8($16) stt $f19, UC_SIGCTX+SC_FPREGS+19*8($16) stt $f20, UC_SIGCTX+SC_FPREGS+20*8($16) stt $f21, UC_SIGCTX+SC_FPREGS+21*8($16) stt $f22, UC_SIGCTX+SC_FPREGS+22*8($16) stt $f23, UC_SIGCTX+SC_FPREGS+23*8($16) stt $f24, UC_SIGCTX+SC_FPREGS+24*8($16) stt $f25, UC_SIGCTX+SC_FPREGS+25*8($16) stt $f26, UC_SIGCTX+SC_FPREGS+26*8($16) stt $f27, UC_SIGCTX+SC_FPREGS+27*8($16) stt $f28, UC_SIGCTX+SC_FPREGS+28*8($16) stt $f29, UC_SIGCTX+SC_FPREGS+29*8($16) stt $f30, UC_SIGCTX+SC_FPREGS+30*8($16) stt $f31, UC_SIGCTX+SC_FPREGS+31*8($16) mf_fpcr $f0 lda $1, 8 stt $f0, UC_SIGCTX+SC_FPCR($16) /* The return address of getcontext is the restart pc. */ stq $26, UC_SIGCTX+SC_PC($16) /* Userlevel always has a processor status word of 8. */ stq $1, UC_SIGCTX+SC_PS($16) /* Save registers around the syscall. We preserve $17 for the benefit of swapcontext. */ subq $30, 4*8, $30 cfi_adjust_cfa_offset(4*8) stq $0, 0($30) cfi_rel_offset(64, 0) stq $16, 8($30) stq $17, 16($30) /* Save the current signal mask. Whee, there are three copies of this in the alpha ucontext_t. */ lda $16, SIG_BLOCK lda $17, 0 lda $0, __NR_osf_sigprocmask callsys ldq $16, 8($30) ldq $17, 16($30) stq $0, UC_OSF_SIGMASK($16) stq $0, UC_SIGCTX+SC_MASK($16) stq $0, UC_SIGMASK($16) stq $31, UC_SIGMASK + 1*8($16) stq $31, UC_SIGMASK + 2*8($16) stq $31, UC_SIGMASK + 3*8($16) stq $31, UC_SIGMASK + 4*8($16) stq $31, UC_SIGMASK + 5*8($16) stq $31, UC_SIGMASK + 6*8($16) stq $31, UC_SIGMASK + 7*8($16) stq $31, UC_SIGMASK + 8*8($16) stq $31, UC_SIGMASK + 9*8($16) stq $31, UC_SIGMASK +10*8($16) stq $31, UC_SIGMASK +11*8($16) stq $31, UC_SIGMASK +12*8($16) stq $31, UC_SIGMASK +13*8($16) stq $31, UC_SIGMASK +14*8($16) stq $31, UC_SIGMASK +15*8($16) ldq $0, 0($30) addq $30, 4*8, $30 cfi_register (64, 0) cfi_adjust_cfa_offset(-4*8) ret $31, ($0), 1 cfi_endproc .size __getcontext_x, .-__getcontext_x .type __getcontext_x, @function