diff options
Diffstat (limited to 'sysdeps/alpha')
| -rw-r--r-- | sysdeps/alpha/Makefile | 6 | ||||
| -rw-r--r-- | sysdeps/alpha/__longjmp.S | 59 | ||||
| -rw-r--r-- | sysdeps/alpha/__longjmp.c | 92 | ||||
| -rw-r--r-- | sysdeps/alpha/bits/setjmp.h | 79 | ||||
| -rw-r--r-- | sysdeps/alpha/bsd-_setjmp.S | 40 | ||||
| -rw-r--r-- | sysdeps/alpha/bsd-setjmp.S | 38 | ||||
| -rw-r--r-- | sysdeps/alpha/setjmp.S | 68 | ||||
| -rw-r--r-- | sysdeps/alpha/setjmp_aux.c | 76 |
8 files changed, 173 insertions, 285 deletions
diff --git a/sysdeps/alpha/Makefile b/sysdeps/alpha/Makefile index 5fe8e4ee7f..6cf4a173a6 100644 --- a/sysdeps/alpha/Makefile +++ b/sysdeps/alpha/Makefile @@ -21,10 +21,6 @@ ifeq ($(subdir),gmon) sysdep_routines += _mcount endif -ifeq ($(subdir),setjmp) -sysdep_routines += setjmp_aux -endif - ifeq ($(subdir),gnulib) sysdep_routines += $(divrem) endif @@ -45,6 +41,6 @@ endif divrem := divl divq reml remq -# For now, build everything with full IEEE math support. +# For now, build everything with full IEEE math support. # TODO: build separate libm and libm-ieee. sysdep-CFLAGS += -mieee diff --git a/sysdeps/alpha/__longjmp.S b/sysdeps/alpha/__longjmp.S new file mode 100644 index 0000000000..34731172e1 --- /dev/null +++ b/sysdeps/alpha/__longjmp.S @@ -0,0 +1,59 @@ +/* Copyright (C) 1992, 1994, 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#define __ASSEMBLY__ + +#include <sysdep.h> +#include <bits/setjmp.h> + + +ENTRY(__longjmp) +#ifdef PROF + ldgp gp, 0(pv) + .set noat + lda AT, _mcount + jsr AT, (AT), _mcount + .set at + .prologue 1 +#else + .prologue 0 +#endif + + mov a1, v0 + ldq s0, JB_S0*8(a0) + ldq s1, JB_S1*8(a0) + ldq s2, JB_S2*8(a0) + ldq s3, JB_S3*8(a0) + ldq s4, JB_S4*8(a0) + ldq s5, JB_S5*8(a0) + ldq ra, JB_PC*8(a0) + ldq fp, JB_FP*8(a0) + ldq t0, JB_SP*8(a0) + ldt $f2, JB_F2*8(a0) + ldt $f3, JB_F3*8(a0) + ldt $f4, JB_F4*8(a0) + ldt $f5, JB_F5*8(a0) + ldt $f6, JB_F6*8(a0) + ldt $f7, JB_F7*8(a0) + ldt $f8, JB_F8*8(a0) + ldt $f9, JB_F9*8(a0) + cmoveq v0, 1, v0 + mov t0, sp + ret + +END(__longjmp) diff --git a/sysdeps/alpha/__longjmp.c b/sysdeps/alpha/__longjmp.c deleted file mode 100644 index 98eba7c513..0000000000 --- a/sysdeps/alpha/__longjmp.c +++ /dev/null @@ -1,92 +0,0 @@ -/* Copyright (C) 1992, 1994, 1997 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* Global register vars must come before any function defn. */ - -register long int - r9 asm ("$9"), r10 asm ("$10"), r11 asm ("$11"), r12 asm ("$12"), - r13 asm ("$13"), r14 asm ("$14"); - -register long int *fp asm ("$15"), *sp asm ("$30"), *retpc asm ("$26"); - -#if 1 /* XXX */ -register double - f2 asm ("$f2"), f3 asm ("$f3"), f4 asm ("$f4"), f5 asm ("$f5"), - f6 asm ("$f6"), f7 asm ("$f7"), f8 asm ("$f8"), f9 asm ("$f9"); -#endif - -#include <setjmp.h> - - -/* Jump to the position specified by ENV, causing the - setjmp call there to return VAL, or 1 if VAL is 0. */ -void -__longjmp (__jmp_buf env, int val) -{ - register long int retval asm ("$0"); - - /* Restore the integer registers. */ - r9 = env[0].__9; - r10 = env[0].__10; - r11 = env[0].__11; - r12 = env[0].__12; - r13 = env[0].__13; - r14 = env[0].__14; - -#if 1 /* XXX */ - /* Restore the floating point registers. */ - f2 = env[0].__f2; - f3 = env[0].__f3; - f4 = env[0].__f4; - f5 = env[0].__f5; - f6 = env[0].__f6; - f7 = env[0].__f7; - f8 = env[0].__f8; - f9 = env[0].__f9; -#endif - - /* Set the return PC to that of setjmp's caller. */ - retpc = env[0].__pc; - - /* Restore the FP and SP of setjmp's caller. */ - fp = env[0].__fp; - sp = env[0].__sp; - - /* Return VAL (or 1 if VAL is zero) to setjmp's caller. - - We use an asm here rather than a normal C return statement - just in case the compiler wanted to do some stack frobnication - in the function epilogue. Since we have already restored - precisely the FP and SP the desired environment needs, - we must avoid the compiler doing anything with the stack. */ - - - asm volatile - ("cmoveq %1, 1, %0\n\t" /* $0 = val ?: 1; */ - "ret $31, (%2), 1" /* return $0 */ - : "=r" (retval) - /* The "0" constraint should force VAL into $0. */ - : "0" (val), "r" (retpc)); - - while (1) - { - /* The loop is just to avoid `volatile function does return' warnings. - The instruction will only be executed once. */ - asm volatile (""); - } -} diff --git a/sysdeps/alpha/bits/setjmp.h b/sysdeps/alpha/bits/setjmp.h index d461205c06..9aa30463d6 100644 --- a/sysdeps/alpha/bits/setjmp.h +++ b/sysdeps/alpha/bits/setjmp.h @@ -17,30 +17,57 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -typedef struct - { - /* Integer registers: - $0 is the return value; - $1-$8, $22-$25, $28 are call-used; - $9-$14 we save here; - $15 is the FP and we save it here; - $16-$21 are input arguments (call-used); - $26 is the return PC and we save it here; - $27 is the procedure value (i.e., the address of __setjmp); - $29 is the global pointer, which the caller will reconstruct - from the return address restored in $26; - $30 is the stack pointer and we save it here; - $31 is always zero. */ - long int __9, __10, __11, __12, __13, __14; - long int *__pc, *__fp, *__sp; +/* The previous bits/setjmp.h had __jmp_buf defined as a structure. + We use an array of 'long int' instead, to make writing the + assembler easier. Naturally, user code should not depend on + either representation. */ -#if 1 /* XXX need predefine for TARGET_FPREGS */ - /* Floating-point registers: - $f0 is the floating return value; - $f1, $f10-$f15, $f22-$f30 are call-used; - $f2-$f9 we save here; - $f16-$21 are input args (call-used); - $f31 is always zero. */ - double __f2, __f3, __f4, __f5, __f6, __f7, __f8, __f9; -#endif /* Have FP regs. */ - } __jmp_buf[1]; +/* + * Integer registers: + * $0 is the return value (va); + * $1-$8, $22-$25, $28 are call-used (t0-t7, t8-t11, at); + * $9-$14 we save here (s0-s5); + * $15 is the FP and we save it here (fp or s6); + * $16-$21 are input arguments (call-used) (a0-a5); + * $26 is the return PC and we save it here (ra); + * $27 is the procedure value (i.e., the address of __setjmp) (pv or t12); + * $29 is the global pointer, which the caller will reconstruct + * from the return address restored in $26 (gp); + * $30 is the stack pointer and we save it here (sp); + * $31 is always zero (zero). + * + * Floating-point registers: + * $f0 is the floating return value; + * $f1, $f10-$f15, $f22-$f30 are call-used; + * $f2-$f9 we save here; + * $f16-$21 are input args (call-used); + * $f31 is always zero. + * + * Note that even on Alpha hardware that does not have an FPU (there + * isn't such a thing currently) it is required to implement the FP + * registers. + */ + +#if defined(__USE_MISC) || defined(__ASSEMBLY__) +#define JB_S0 0 +#define JB_S1 1 +#define JB_S2 2 +#define JB_S3 3 +#define JB_S4 4 +#define JB_S5 5 +#define JB_PC 6 +#define JB_FP 7 +#define JB_SP 8 +#define JB_F2 9 +#define JB_F3 10 +#define JB_F4 11 +#define JB_F5 12 +#define JB_F6 13 +#define JB_F7 14 +#define JB_F8 15 +#define JB_F9 16 +#endif + +#ifndef __ASSEMBLY__ +typedef long int __jmp_buf[17]; +#endif diff --git a/sysdeps/alpha/bsd-_setjmp.S b/sysdeps/alpha/bsd-_setjmp.S index 07fb0c7637..4e6a2da560 100644 --- a/sysdeps/alpha/bsd-_setjmp.S +++ b/sysdeps/alpha/bsd-_setjmp.S @@ -1,39 +1 @@ -/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. Alpha version. - Copyright (C) 1994, 1996 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* This just does a tail-call to `__sigsetjmp (ARG, 0)'. - We cannot do it in C because it must be a tail-call, so frame-unwinding - in setjmp doesn't clobber the state restored by longjmp. */ - -#include <sysdep.h> - -ENTRY(_setjmp) - ldgp $29,0($27) -#ifdef PROF - .set noat - lda AT, _mcount - jsr AT, (AT), _mcount - .set at -#endif - .prologue 1 - bis $31, $31, $17 /* Pass a second argument of zero. */ - jmp $31, __sigsetjmp /* Call __sigsetjmp. */ - END(_setjmp) - -strong_alias_asm(_setjmp, __setjmp) +/* _setjmp is in setjmp.S */ diff --git a/sysdeps/alpha/bsd-setjmp.S b/sysdeps/alpha/bsd-setjmp.S index cf5bf189de..1da848d2f1 100644 --- a/sysdeps/alpha/bsd-setjmp.S +++ b/sysdeps/alpha/bsd-setjmp.S @@ -1,37 +1 @@ -/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. Alpha version. - Copyright (C) 1994, 1996 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* This just does a tail-call to `__sigsetjmp (ARG, 1)'. - We cannot do it in C because it must be a tail-call, so frame-unwinding - in setjmp doesn't clobber the state restored by longjmp. */ - -#include <sysdep.h> - -ENTRY(setjmp) - ldgp $29, 0($27) -#ifdef PROF - .set noat - lda AT, _mcount - jsr AT, (AT), _mcount - .set at -#endif - .prologue 1 - bis $31, 1, $17 /* Pass a second argument of one. */ - jmp $31, __sigsetjmp /* Call __sigsetjmp. */ - END(setjmp) +/* setjmp is in setjmp.S */ diff --git a/sysdeps/alpha/setjmp.S b/sysdeps/alpha/setjmp.S index 4b2e147b15..48fe33b3ec 100644 --- a/sysdeps/alpha/setjmp.S +++ b/sysdeps/alpha/setjmp.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc. +/* Copyright (C) 1992, 1994, 1996, 1997 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 @@ -16,13 +16,21 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#define __ASSEMBLY__ + #include <sysdep.h> +#include <bits/setjmp.h> + + .ent __sigsetjmp + .global __sigsetjmp +__sigsetjmp: + ldgp gp, 0(pv) -/* The function __sigsetjmp_aux saves all the registers, but it can't - reliably access the stack or frame pointers, so we pass them in as - extra arguments. */ -ENTRY (__sigsetjmp) - ldgp $29, 0($27) +$sigsetjmp_local: + subq sp, 16, sp + .frame sp, 16, ra, 0 + stq ra, 0(sp) + .mask 0x04000000, -16 #ifdef PROF .set noat lda AT, _mcount @@ -31,8 +39,48 @@ ENTRY (__sigsetjmp) #endif .prologue 1 - bis $30, $30, $18 /* Pass SP as 3rd arg. */ - bis $15, $15, $19 /* Pass FP as 4th arg. */ - jmp $31, __sigsetjmp_aux /* Call __sigsetjmp_aux. */ + stq s0, JB_S0*8(a0) + stq s1, JB_S1*8(a0) + stq s2, JB_S2*8(a0) + stq s3, JB_S3*8(a0) + stq s4, JB_S4*8(a0) + stq s5, JB_S5*8(a0) + stq ra, JB_PC*8(a0) + addq sp, 16, t0 + stq fp, JB_FP*8(a0) + stq t0, JB_SP*8(a0) + stt $f2, JB_F2*8(a0) + stt $f3, JB_F3*8(a0) + stt $f4, JB_F4*8(a0) + stt $f5, JB_F5*8(a0) + stt $f6, JB_F6*8(a0) + stt $f7, JB_F7*8(a0) + stt $f8, JB_F8*8(a0) + stt $f9, JB_F9*8(a0) + + /* Call to C to (potentially) save our signal mask. */ + jsr ra, __sigjmp_save + + ldq ra, 0(sp) + addq sp, 16, sp + ret + +END(__sigsetjmp) + +/* Put these traditional entry points in the same file so that we can + elide much of the nonsense in trying to jmp to the real function. */ + +ENTRY(_setjmp) + ldgp gp, 0(pv) + mov 0, a1 + br $sigsetjmp_local +END(_setjmp) + +ENTRY(setjmp) + ldgp gp, 0(pv) + mov 1, a1 + br $sigsetjmp_local +END(setjmp) - END(__sigsetjmp) +weak_extern(_setjmp) +weak_extern(setjmp) diff --git a/sysdeps/alpha/setjmp_aux.c b/sysdeps/alpha/setjmp_aux.c deleted file mode 100644 index fa26975295..0000000000 --- a/sysdeps/alpha/setjmp_aux.c +++ /dev/null @@ -1,76 +0,0 @@ -/* Copyright (C) 1992, 1994, 1997 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* Global register decls must come before any function defn. */ - -register long int - r9 asm ("$9"), r10 asm ("$10"), r11 asm ("$11"), r12 asm ("$12"), - r13 asm ("$13"), r14 asm ("$14"); - -register long int *fp asm ("$15"), *sp asm ("$30"), *retpc asm ("$26"); - -#if 1 /* XXX */ -register double - f2 asm ("$f2"), f3 asm ("$f3"), f4 asm ("$f4"), f5 asm ("$f5"), - f6 asm ("$f6"), f7 asm ("$f7"), f8 asm ("$f8"), f9 asm ("$f9"); -#endif - - -#include <setjmp.h> - - -/* Save the current program position in ENV and return 0. */ -int -__sigsetjmp_aux (sigjmp_buf env, int savemask, long int *sp, long int *fp) -{ - /* Save the integer registers. */ - env[0].__jmpbuf[0].__9 = r9; - env[0].__jmpbuf[0].__10 = r10; - env[0].__jmpbuf[0].__11 = r11; - env[0].__jmpbuf[0].__12 = r12; - env[0].__jmpbuf[0].__13 = r13; - env[0].__jmpbuf[0].__14 = r14; - -#if 1 /* XXX */ - /* Save the floating point registers. */ - env[0].__jmpbuf[0].__f2 = f2; - env[0].__jmpbuf[0].__f3 = f3; - env[0].__jmpbuf[0].__f4 = f4; - env[0].__jmpbuf[0].__f5 = f5; - env[0].__jmpbuf[0].__f6 = f6; - env[0].__jmpbuf[0].__f7 = f7; - env[0].__jmpbuf[0].__f8 = f8; - env[0].__jmpbuf[0].__f9 = f9; -#endif - - /* Save the return address of our caller, where longjmp will jump to. */ - env[0].__jmpbuf[0].__pc = retpc; - - /* Save the FP and SP of our caller. The __sigsetjmp entry point - simply puts these in the argument registers for us to fetch. */ - env[0].__jmpbuf[0].__fp = fp; - env[0].__jmpbuf[0].__sp = sp; - - /* Save the signal mask if requested. */ - __sigjmp_save (env, savemask); - - retpc = env[0].__jmpbuf[0].__pc; /* restore ra, ugly... */ - - /* Return to the original caller of __sigsetjmp. */ - return 0; -} |