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Diffstat (limited to 'usr/src/lib/common/amd64/crt1.s')
| -rw-r--r-- | usr/src/lib/common/amd64/crt1.s | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/usr/src/lib/common/amd64/crt1.s b/usr/src/lib/common/amd64/crt1.s deleted file mode 100644 index 2d3cd220ce..0000000000 --- a/usr/src/lib/common/amd64/crt1.s +++ /dev/null @@ -1,192 +0,0 @@ -/* - * 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 2007 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -/* - * This crt1.o module is provided as the bare minimum required to build - * a 64-bit executable with gcc. It is installed in /usr/lib/amd64 - * where it will be picked up by gcc, along with crti.o and crtn.o - */ - - .ident "%Z%%M% %I% %E% SMI" - - .file "crt1.s" - - .globl _start - -/* global entities defined elsewhere but used here */ - .globl main - .globl __fpstart - .globl exit - .globl _exit - .weak _DYNAMIC - - .section .data - - .weak environ - .set environ,_environ - .globl _environ - .type _environ,@object - .size _environ,8 - .align 8 -_environ: - .8byte 0x0 - - .globl __environ_lock - .type __environ_lock,@object - .size __environ_lock,24 - .align 8 -__environ_lock: - .zero 24 - - .globl ___Argv - .type ___Argv,@object - .size ___Argv,8 - .align 8 -___Argv: - .8byte 0x0 - - .section .text - .align 8 - -/* - * The SVR4/i386 ABI (pages 3-29) says that when the entry - * point runs registers' %rbp, %rsp, %rdx values are specified - * the following: - * - * %rbp The content of this register is unspecified at - * process initialization time, but the user code should mark - * the deepest stack frame by setting the frame pointer to zero. - * No other frame's %ebp should have a zero value. - * - * %rsp Performing its usual job, the stack pointer holds the address - * of the bottom of the stack, which is guaranteed to be - * quadword aligned. - * - * The stack contains the arguments and environment: - * ... - * envp[0] (16+(8*argc))(%rsp) - * NULL (8+(8*argc))(%rsp) - * ... - * argv[0] 8(%rsp) - * argc 0(%rsp) - * - * %rdx In a conforming program, this register contains a function - * pointer that the application should register with atexit(BA_OS). - * This function is used for shared object termination code - * [see Dynamic Linking in Chapter 5 of the System V ABI]. - * - */ - - .type _start,@function -_start: -/* - * Allocate a NULL return address and a NULL previous %rbp as if - * there was a genuine call to _start. - */ - pushq $0 - pushq $0 - movq %rsp,%rbp /* The first stack frame */ - -/* - * The stack now is - * - * envp[0] (32+(8*argc))(%rsp) - (A) - * NULL (24+(8*argc))(%rsp) - * ... - * argv[0] 24(%rbp) - (B) - * argc 16(%rbp) - * 0 8(%rbp) - * 0 0(%rbp) - */ - - movq $_DYNAMIC,%rax - testq %rax,%rax - jz 1f - movq %rdx,%rdi /* register rt_do_exit */ - call atexit -1: - movq $_fini,%rdi - call atexit - -/* - * Calculate the location of the envp array by adding the size of - * the argv array to the start of the argv array. - */ - movq 16(%rbp),%rax /* argc */ - movq _environ, %rcx - testq %rcx, %rcx /* check if _environ==0 */ - jne 1f - leaq 32(%rbp,%rax,8),%rcx /* (A) */ - movq %rcx,_environ /* copy to _environ */ -1: - -/* - * Force stack alignment - below here there must have been an even - * number of un-popped pushq instructions whenever a call is reached - */ - andq $-16,%rsp - pushq %rdx - leaq 24(%rbp),%rdx /* argv (B) */ - movq %rdx,___Argv - pushq %rcx - pushq %rdx - pushq %rax - call __fpstart - call _init - popq %rdi - popq %rsi - popq %rdx - popq %rcx - call main /* main(argc,argv,envp) */ - pushq %rax - pushq %rax - movq %rax,%rdi /* and call exit */ - call exit - popq %rdi - popq %rdi - call _exit /* if user redefined exit, call _exit */ - hlt - .size _start, .-_start - -/* - * The following is here in case any object module compiled with cc -p - * was linked into this module. - */ - .globl _mcount - .section .text - .align 8 - .type _mcount,@function -_mcount: - ret - .size _mcount, .-_mcount - - .globl __longdouble_used - .section .data - .align 8 - .type __longdouble_used,@object - .size __longdouble_used,4 -__longdouble_used: - .4byte 0 |