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Diffstat (limited to 'sysdeps/alpha/div_libc.h')
| -rw-r--r-- | sysdeps/alpha/div_libc.h | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/sysdeps/alpha/div_libc.h b/sysdeps/alpha/div_libc.h deleted file mode 100644 index b731b02e25..0000000000 --- a/sysdeps/alpha/div_libc.h +++ /dev/null @@ -1,164 +0,0 @@ -/* Copyright (C) 2004 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -/* Common bits for implementing software divide. */ - -#include <sysdep.h> -#ifdef __linux__ -# include <asm/gentrap.h> -# include <asm/pal.h> -#else -# include <machine/pal.h> -#endif - -/* These are not normal C functions. Argument registers are t10 and t11; - the result goes in t12; the return address is in t9. Only t12 and AT - may be clobbered. */ -#define X t10 -#define Y t11 -#define RV t12 -#define RA t9 - -/* The secureplt format does not allow the division routines to be called - via plt; there aren't enough registers free to be clobbered. Avoid - setting the symbol type to STT_FUNC, so that the linker won't be tempted - to create a plt entry. */ -#define funcnoplt notype - -/* None of these functions should use implicit anything. */ - .set nomacro - .set noat - -/* Code fragment to invoke _mcount for profiling. This should be invoked - directly after allocation of the stack frame. */ -.macro CALL_MCOUNT -#ifdef PROF - stq ra, 0(sp) - stq pv, 8(sp) - stq gp, 16(sp) - cfi_rel_offset (ra, 0) - cfi_rel_offset (pv, 8) - cfi_rel_offset (gp, 16) - br AT, 1f - .set macro -1: ldgp gp, 0(AT) - mov RA, ra - lda AT, _mcount - jsr AT, (AT), _mcount - .set nomacro - ldq ra, 0(sp) - ldq pv, 8(sp) - ldq gp, 16(sp) - cfi_restore (ra) - cfi_restore (pv) - cfi_restore (gp) - /* Realign subsequent code with what we'd have without this - macro at all. This means aligned with one arithmetic insn - used within the bundle. */ - .align 4 - nop -#endif -.endm - -/* In order to make the below work, all top-level divide routines must - use the same frame size. */ -#define FRAME 64 - -/* Code fragment to generate an integer divide-by-zero fault. When - building libc.so, we arrange for there to be one copy of this code - placed late in the dso, such that all branches are forward. When - building libc.a, we use multiple copies to avoid having an out of - range branch. Users should jump to DIVBYZERO. */ - -.macro DO_DIVBYZERO -#ifdef PIC -#define DIVBYZERO __divbyzero - .section .gnu.linkonce.t.divbyzero, "ax", @progbits - .globl __divbyzero - .type __divbyzero, @function - .usepv __divbyzero, no - .hidden __divbyzero -#else -#define DIVBYZERO $divbyzero -#endif - - .align 4 -DIVBYZERO: - cfi_startproc - cfi_return_column (RA) - cfi_def_cfa_offset (FRAME) - - mov a0, RV - unop - lda a0, GEN_INTDIV - call_pal PAL_gentrap - - mov RV, a0 - clr RV - lda sp, FRAME(sp) - cfi_def_cfa_offset (0) - ret $31, (RA), 1 - - cfi_endproc - .size DIVBYZERO, .-DIVBYZERO -.endm - -/* Like the ev6 instructions, but fall back to stack use on prior machines. */ - - .arch ev6 - -.macro _ITOFS gr, fr, slot -#ifdef __alpha_fix__ - itofs \gr, \fr -#else - stl \gr, \slot(sp) - lds \fr, \slot(sp) -#endif -.endm - -.macro _ITOFT gr, fr, slot -#ifdef __alpha_fix__ - itoft \gr, \fr -#else - stq \gr, \slot(sp) - ldt \fr, \slot(sp) -#endif -.endm - -.macro _FTOIT fr, gr, slot -#ifdef __alpha_fix__ - ftoit \fr, \gr -#else - stt \fr, \slot(sp) - ldq \gr, \slot(sp) -#endif -.endm - -/* Similarly, but move two registers. Schedules better for pre-ev6. */ - -.macro _ITOFT2 gr1, fr1, slot1, gr2, fr2, slot2 -#ifdef __alpha_fix__ - itoft \gr1, \fr1 - itoft \gr2, \fr2 -#else - stq \gr1, \slot1(sp) - stq \gr2, \slot2(sp) - ldt \fr1, \slot1(sp) - ldt \fr2, \slot2(sp) -#endif -.endm |