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Merge jmallett@'s n64 work into HEAD - changeset 2

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Update libc Makefiles.
Add makecontext implementation.

Changes from http://svn.freebsd.org/base/user/jmallett/octeon

Approved by:	rrs(mentor), jmallett
This commit is contained in:
Jayachandran C. 2010-06-16 14:13:36 +00:00
parent 915421bba4
commit 9279d32a64
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=209233
7 changed files with 118 additions and 41 deletions
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7
lib/libc/Makefile
View File

@ -51,7 +51,12 @@ NOASM=
.include "${.CURDIR}/posix1e/Makefile.inc"
.if ${MACHINE_ARCH} != "amd64" && \
${MACHINE_ARCH} != "ia64" && \
${MACHINE_ARCH} != "sparc64"
${MACHINE_ARCH} != "sparc64" && \
${MACHINE_ARCH} != "mips"
.include "${.CURDIR}/quad/Makefile.inc"
.endif
.if ${MACHINE_ARCH} == "mips" && \
(!defined(TARGET_ABI) || ${TARGET_ABI} == "o32")
.include "${.CURDIR}/quad/Makefile.inc"
.endif
.include "${.CURDIR}/regex/Makefile.inc"

2
lib/libc/mips/Makefile.inc
View File

@ -1,8 +1,6 @@
# $NetBSD: Makefile.inc,v 1.7 2005/09/17 11:49:39 tsutsui Exp $
# $FreeBSD$
SOFTFLOAT_BITS=32
CFLAGS+=-DSOFTFLOAT
MDSRCS+= machdep_ldisd.c

4
lib/libc/mips/Symbol.map
View File

@ -24,13 +24,9 @@ FBSD_1.0 {
sigsetjmp;
siglongjmp;
htonl;
__htonl;
htons;
__htons;
ntohl;
__ntohl;
ntohs;
__ntohs;
vfork;
brk;
cerror; /* XXX - Should this be .cerror (see sys/cerror.S)? */

2
lib/libc/mips/gen/Makefile.inc
View File

@ -6,4 +6,4 @@ SRCS+= infinity.c fabs.c ldexp.c modf.c
# SRCS+= flt_rounds.c fpgetmask.c fpgetround.c fpgetsticky.c fpsetmask.c \
# fpsetround.c fpsetsticky.c
SRCS+= _set_tp.c _setjmp.S makecontext.c setjmp.S signalcontext.c sigsetjmp.S
SRCS+= _ctx_start.S _set_tp.c _setjmp.S makecontext.c setjmp.S signalcontext.c sigsetjmp.S

41
lib/libc/mips/gen/_ctx_start.S Normal file
View File

@ -0,0 +1,41 @@
/*-
* Copyright (c) 2010 Juli Mallett.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
/*
* XXX gp?
*/
ENTRY(_ctx_start)
jalr t9
move a0, s0
PTR_LA t9, _ctx_done
jalr t9
break 0
END(_ctx_start)

101
lib/libc/mips/gen/makecontext.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: makecontext.c,v 1.3 2003/01/19 08:53:36 matt Exp $ */
/* $NetBSD: makecontext.c,v 1.5 2009/12/14 01:07:42 matt Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -15,13 +15,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
@ -39,48 +32,92 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: makecontext.c,v 1.3 2003/01/19 08:53:36 matt Exp $");
__RCSID("$NetBSD: makecontext.c,v 1.5 2009/12/14 01:07:42 matt Exp $");
#endif
#include <sys/types.h>
#include <ucontext.h>
#include <sys/param.h>
#include <machine/regnum.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <ucontext.h>
__weak_reference(__makecontext, makecontext);
void _ctx_done(ucontext_t *);
void _ctx_start(void);
void
makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
__makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
{
/* XXXMIPS: Implement me */
#if 0
__greg_t *gr = ucp->uc_mcontext.__gregs;
uintptr_t *sp;
mcontext_t *mc;
register_t *sp;
int i;
va_list ap;
void __resumecontext(void);
/*
* XXX/juli
* We need an mc_len or mc_flags like other architectures
* so that we can mark a context as invalid. Store it in
* mc->mc_regs[ZERO] perhaps?
*/
if (argc < 0 || argc > 6 || ucp == NULL ||
ucp->uc_stack.ss_sp == NULL ||
ucp->uc_stack.ss_size < MINSIGSTKSZ)
return;
mc = &ucp->uc_mcontext;
/* LINTED uintptr_t is safe */
sp = (uintptr_t *)
sp = (register_t *)
((uintptr_t)ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);
/* LINTED uintptr_t is safe */
#if defined(__mips_o32) || defined(__mips_o64)
sp -= (argc >= 4 ? argc : 4); /* Make room for >=4 arguments. */
sp = (uintptr_t *)
((uintptr_t)sp & ~0x7); /* Align on double-word boundary. */
sp = (register_t *)
((uintptr_t)sp & ~0x7); /* Align on double-word boundary. */
#elif defined(__mips_n32) || defined(__mips_n64)
sp -= (argc > 8 ? argc - 8 : 0); /* Make room for > 8 arguments. */
sp = (register_t *)
((uintptr_t)sp & ~0xf); /* Align on quad-word boundary. */
#endif
gr[_REG_SP] = (__greg_t)sp;
gr[_REG_RA] = (__greg_t)__resumecontext;
gr[_REG_T9] = (__greg_t)func; /* required for .abicalls */
gr[_REG_EPC] = (__greg_t)func;
mc->mc_regs[SP] = (intptr_t)sp;
mc->mc_regs[S0] = (intptr_t)ucp;
mc->mc_regs[T9] = (intptr_t)func;
mc->mc_pc = (intptr_t)_ctx_start;
/* Construct argument list. */
va_start(ap, argc);
#if defined(__mips_o32) || defined(__mips_o64)
/* Up to the first four arguments are passed in $a0-3. */
for (i = 0; i < argc && i < 4; i++)
/* LINTED uintptr_t is safe */
gr[_REG_A0 + i] = va_arg(ap, uintptr_t);
/* LINTED register_t is safe */
mc->mc_regs[A0 + i] = va_arg(ap, register_t);
/* Pass remaining arguments on the stack above the $a0-3 gap. */
for (sp += 4; i < argc; i++)
/* LINTED uintptr_t is safe */
*sp++ = va_arg(ap, uintptr_t);
va_end(ap);
sp += i;
#endif
#if defined(__mips_n32) || defined(__mips_n64)
/* Up to the first 8 arguments are passed in $a0-7. */
for (i = 0; i < argc && i < 8; i++)
/* LINTED register_t is safe */
mc->mc_regs[A0 + i] = va_arg(ap, register_t);
/* Pass remaining arguments on the stack above the $a0-3 gap. */
#endif
/* Pass remaining arguments on the stack above the $a0-3 gap. */
for (; i < argc; i++)
/* LINTED uintptr_t is safe */
*sp++ = va_arg(ap, register_t);
va_end(ap);
}
void
_ctx_done(ucontext_t *ucp)
{
if (ucp->uc_link == NULL)
exit(0);
else {
setcontext((const ucontext_t *)ucp->uc_link);
abort();
}
}

2
lib/libc/mips/sys/Makefile.inc
View File

@ -1,7 +1,7 @@
# $FreeBSD$
MDASM= Ovfork.S brk.S cerror.S exect.S \
fork.S pipe.S ptrace.S sbrk.S shmat.S syscall.S
fork.S pipe.S ptrace.S sbrk.S syscall.S
# Don't generate default code for these syscalls:
NOASM= break.o exit.o ftruncate.o getlogin.o lseek.o mmap.o \