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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
.file "asm_subr.s"
#include <SYS.h>
#include <sys/regset.h>
#include <../assym.h>
/*
* This is where execution resumes when a thread created with
* thr_create() or pthread_create() returns (see setup_context()).
* We pass the (void *) return value to _thrp_terminate().
*/
ENTRY(_lwp_start)
movq %rax, %rdi
call _thrp_terminate
RET /* actually, never returns */
SET_SIZE(_lwp_start)
/* All we need to do now is (carefully) call lwp_exit(). */
ENTRY(_lwp_terminate)
SYSTRAP_RVAL1(lwp_exit)
RET /* if we return, it is very bad */
SET_SIZE(_lwp_terminate)
ENTRY(set_curthread)
movq %rdi, %fs:0
ret
SET_SIZE(set_curthread)
ENTRY(__lwp_park)
movq %rsi, %rdx
movq %rdi, %rsi
movq $0, %rdi
SYSTRAP_RVAL1(lwp_park)
SYSLWPERR
RET
SET_SIZE(__lwp_park)
ENTRY(__lwp_unpark)
movq %rdi, %rsi
movq $1, %rdi
SYSTRAP_RVAL1(lwp_park)
SYSLWPERR
RET
SET_SIZE(__lwp_unpark)
ENTRY(__lwp_unpark_all)
movq %rsi, %rdx
movq %rdi, %rsi
movq $2, %rdi
SYSTRAP_RVAL1(lwp_park)
SYSLWPERR
RET
SET_SIZE(__lwp_unpark_all)
/*
* __sighndlr(int sig, siginfo_t *si, ucontext_t *uc, void (*hndlr)())
*
* This is called from sigacthandler() for the entire purpose of
* communicating the ucontext to java's stack tracing functions.
*/
ENTRY(__sighndlr)
.globl __sighndlrend
pushq %rbp
movq %rsp, %rbp
call *%rcx
leave
ret
__sighndlrend:
SET_SIZE(__sighndlr)
/*
* int _sigsetjmp(sigjmp_buf env, int savemask)
*
* This version is faster than the old non-threaded version because we
* don't normally have to call __getcontext() to get the signal mask.
* (We have a copy of it in the ulwp_t structure.)
*/
#undef sigsetjmp
#if SIZEOF_SIGJMP_BUF < SIZEOF_UCONTEXT_T
#error "sigjmp_buf is too small to contain a ucontext_t"
#else
#if defined(__GNUC_AS__)
#define REGOFF(reg) ( reg * CLONGSIZE )
#else
#define REGOFF(reg) [ reg \* CLONGSIZE ]
#endif
ENTRY2(sigsetjmp,_sigsetjmp)
pushq %rbp
movq %rsp, %rbp
/* construct a complete gregset_t for __csigsetjmp */
subq $REGOFF(_NGREG), %rsp
movq %r15, REGOFF(REG_R15) (%rsp)
movq %r14, REGOFF(REG_R14) (%rsp)
movq %r13, REGOFF(REG_R13) (%rsp)
movq %r12, REGOFF(REG_R12) (%rsp)
movq %r11, REGOFF(REG_R11) (%rsp)
movq %r10, REGOFF(REG_R10) (%rsp)
movq %r9, REGOFF(REG_R9) (%rsp)
movq %r8, REGOFF(REG_R8) (%rsp)
movq %rdi, REGOFF(REG_RDI) (%rsp)
movq %rsi, REGOFF(REG_RSI) (%rsp)
movq %rbx, REGOFF(REG_RBX) (%rsp)
movq %rdx, REGOFF(REG_RDX) (%rsp)
movq %rcx, REGOFF(REG_RCX) (%rsp)
movq $0, REGOFF(REG_RAX) (%rsp)
movq $0, REGOFF(REG_TRAPNO) (%rsp)
movq $0, REGOFF(REG_ERR) (%rsp)
xorq %rax, %rax
movw %cs, %ax
movq %rax, REGOFF(REG_CS) (%rsp)
movq $0, REGOFF(REG_RFL) (%rsp)
movw %ss, %ax
movq %rax, REGOFF(REG_SS) (%rsp)
movw %fs, %ax
movq %rax, REGOFF(REG_FS) (%rsp)
movw %gs, %ax
movq %rax, REGOFF(REG_GS) (%rsp)
movw %es, %ax
movq %rax, REGOFF(REG_ES) (%rsp)
movw %ds, %ax
movq %rax, REGOFF(REG_DS) (%rsp)
movq %fs:0, %rax
movq %rax, REGOFF(REG_FSBASE) (%rsp)
movq $0, REGOFF(REG_GSBASE) (%rsp)
movq (%rbp), %rax /* previous %rbp */
movq %rax, REGOFF(REG_RBP) (%rsp)
movq 8(%rbp), %rax /* previous %rip */
movq %rax, REGOFF(REG_RIP) (%rsp)
leaq 16(%rbp), %rax /* previous %rsp */
movq %rax, REGOFF(REG_RSP) (%rsp)
movq %rsp, %rdx /* pointer to gregset_t */
call __csigsetjmp
xorq %rax, %rax
leave
ret
SET_SIZE(sigsetjmp)
SET_SIZE(_sigsetjmp)
#endif /* SIZEOF_SIGJMP_BUF < SIZEOF_UCONTEXT_T */
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