/* $NetBSD: rtld_start.S,v 1.1 2003/03/25 13:11:54 scw Exp $ */ /* * Copyright 2003 Wasabi Systems, Inc. * All rights reserved. * * Written by Steve C. Woodford for Wasabi Systems, Inc. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC * 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 #ifdef _LP64 #define PTRSZ 8 #else #define PTRSZ 4 #endif #define RTLD_START_FR_R2 0x00 #define RTLD_START_FR_R3 0x08 #define RTLD_START_FR_R4 0x10 #define RTLD_START_FR_R7 0x18 #define RTLD_START_FR_R28 0x20 #define RTLD_START_FR_CLEANUP 0x28 #define RTLD_START_FR_OBJ (RTLD_START_FR_CLEANUP+PTRSZ) #define RTLD_START_FR_SIZE (RTLD_START_FR_OBJ+PTRSZ) ASENTRY_NOPROFILE(.rtld_start) addi r15, -RTLD_START_FR_SIZE, r15 st.q r15, RTLD_START_FR_R2, r2 st.q r15, RTLD_START_FR_R3, r3 st.q r15, RTLD_START_FR_R4, r4 st.q r15, RTLD_START_FR_R7, r7 st.q r15, RTLD_START_FR_R28, r28 pt/u datalabel _GLOBAL_OFFSET_TABLE_, tr0 gettr tr0, r0 pt/u datalabel _DYNAMIC, tr1 LDPTR r0, 0, r28 gettr tr1, r2 /* &_DYNAMIC */ sub r2, r28, r28 or r28, r63, r3 /* relocbase */ pt/l _C_LABEL(_rtld_relocate_nonplt_self), tr0 blink tr0, r18 add r28, r63, r3 /* relocbase */ addi r15, RTLD_START_FR_CLEANUP, r2 pt/l _C_LABEL(_rtld), tr0 blink tr0, r18 ptabs/l r2, tr0 ld.q r15, RTLD_START_FR_R2, r2 /* argc */ ld.q r15, RTLD_START_FR_R3, r3 /* argv */ ld.q r15, RTLD_START_FR_R4, r4 /* envp */ ld.q r15, RTLD_START_FR_R7, r7 /* pstrings */ ld.q r15, RTLD_START_FR_R28, r28 LDPTR r15, RTLD_START_FR_CLEANUP, r5 /* cleanup */ LDPTR r15, RTLD_START_FR_OBJ, r6 /* obj */ addi r15, RTLD_START_FR_SIZE, r15 blink tr0, r63 .size _ASM_LABEL(.rtld_start),.-_ASM_LABEL(.rtld_start) #define RTLD_BIND_START_FR_R2 0x00 #define RTLD_BIND_START_FR_R3 0x08 #define RTLD_BIND_START_FR_R4 0x10 #define RTLD_BIND_START_FR_R5 0x18 #define RTLD_BIND_START_FR_R6 0x20 #define RTLD_BIND_START_FR_R7 0x28 #define RTLD_BIND_START_FR_R8 0x30 #define RTLD_BIND_START_FR_R9 0x38 #define RTLD_BIND_START_FR_DR0 0x40 #define RTLD_BIND_START_FR_DR2 0x48 #define RTLD_BIND_START_FR_DR4 0x50 #define RTLD_BIND_START_FR_DR6 0x58 #define RTLD_BIND_START_FR_DR8 0x60 #define RTLD_BIND_START_FR_DR10 0x68 #define RTLD_BIND_START_FR_SIZE 0x70 /* * On entry: * r12 -> _GLOBAL_OFFSET_TABLE_ + GOT_BIAS (0x8000) * r17 -> Obj_Entry * * r21 -> reloff */ ASENTRY_NOPROFILE(_rtld_bind_start) LINK_FRAME(RTLD_BIND_START_FR_SIZE) st.q r14, RTLD_BIND_START_FR_R2, r2 st.q r14, RTLD_BIND_START_FR_R3, r3 st.q r14, RTLD_BIND_START_FR_R4, r4 st.q r14, RTLD_BIND_START_FR_R5, r5 st.q r14, RTLD_BIND_START_FR_R6, r6 st.q r14, RTLD_BIND_START_FR_R7, r7 st.q r14, RTLD_BIND_START_FR_R8, r8 st.q r14, RTLD_BIND_START_FR_R9, r9 fst.d r14, RTLD_BIND_START_FR_DR0, dr0 fst.d r14, RTLD_BIND_START_FR_DR2, dr2 fst.d r14, RTLD_BIND_START_FR_DR4, dr4 fst.d r14, RTLD_BIND_START_FR_DR6, dr6 fst.d r14, RTLD_BIND_START_FR_DR8, dr8 fst.d r14, RTLD_BIND_START_FR_DR10, dr10 pt/l _C_LABEL(_rtld_bind), tr0 add r17, r63, r2 add r21, r63, r3 blink tr0, r18 ptabs/l r2, tr0 ld.q r14, RTLD_BIND_START_FR_R2, r2 ld.q r14, RTLD_BIND_START_FR_R3, r3 ld.q r14, RTLD_BIND_START_FR_R4, r4 ld.q r14, RTLD_BIND_START_FR_R5, r5 ld.q r14, RTLD_BIND_START_FR_R6, r6 ld.q r14, RTLD_BIND_START_FR_R7, r7 ld.q r14, RTLD_BIND_START_FR_R8, r8 ld.q r14, RTLD_BIND_START_FR_R9, r9 fld.d r14, RTLD_BIND_START_FR_DR0, dr0 fld.d r14, RTLD_BIND_START_FR_DR2, dr2 fld.d r14, RTLD_BIND_START_FR_DR4, dr4 fld.d r14, RTLD_BIND_START_FR_DR6, dr6 fld.d r14, RTLD_BIND_START_FR_DR8, dr8 fld.d r14, RTLD_BIND_START_FR_DR10, dr10 UNLINK_FRAME(RTLD_BIND_START_FR_SIZE) blink tr0, r63 .size _ASM_LABEL(_rtld_bind_start),.-_ASM_LABEL(_rtld_bind_start)