1/* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12/* 13 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 14 * Use is subject to license terms. 15 */ 16 17/* Copyright 2016, Richard Lowe. */ 18 19#include <sys/asm_linkage.h> 20#include <sys/stack.h> 21 22 .file "mach-crt1.s" 23 24 .global _start_crt 25 26#if defined(__sparcv9) 27#define EB_MAX_SIZE 128 28#else 29#define EB_MAX_SIZE 64 30#endif 31 32ENTRY_NP(_start) 33 /* 34 * On entry, the stack is: 35 * 36 * .-----------------------. <--- %sp 37 * | | 38 * | Window | 39 * | | 40 * |-----------------------| 41 * | argc | 42 * |-----------------------| 43 * | argv[0] | 44 * | argv[1] | 45 * | argv[2] | 46 * | argv[3] | 47 * | ... | 48 * | argv[argc - 1] | 49 * |-----------------------| 50 * | NULL | 51 * |-----------------------| 52 * | envp[0] | 53 * | envp[1] | 54 * | envp[2] | 55 * | envp[3] | 56 * | ... | 57 * | envp[N] | 58 * |-----------------------| 59 * | NULL | 60 * .-----------------------. 61 * 62 * and an exit handler from the linker is in %g1 63 */ 64 clr %fp ! don't trace the stack past this point 65 66 add %sp, WINDOWSIZE + STACK_BIAS, %l0 ! address of argc 67 68 ! allocate a minimally sized frame, and align ourselves 69 add %sp, -SA(MINFRAME - EB_MAX_SIZE), %sp 70 71 ldn [%l0], %o0 ! argc 72 add %l0, CPTRSIZE, %o1 ! argv 73 call _start_crt 74 mov %g1, %o2 ! exit_handler in delay slot 75SET_SIZE(_start) 76