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| 1 /* | |
| 2 * Copyright 2009, Google Inc. | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are | |
| 7 * met: | |
| 8 * | |
| 9 * * Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * * Redistributions in binary form must reproduce the above | |
| 12 * copyright notice, this list of conditions and the following disclaimer | |
| 13 * in the documentation and/or other materials provided with the | |
| 14 * distribution. | |
| 15 * * Neither the name of Google Inc. nor the names of its | |
| 16 * contributors may be used to endorse or promote products derived from | |
| 17 * this software without specific prior written permission. | |
| 18 * | |
| 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 30 */ | |
| 31 | |
| 32 /* | |
| 33 *TODO(robertm): find documentation for eabi | |
| 34 | |
| 35 * The stack organization | |
| 36 * 0(sp) argc | |
| 37 * 4(sp) argv[0] | |
| 38 * ... | |
| 39 * (4*argc)(sp) NULL | |
| 40 * (4*(argc+1))(sp) envp[0] | |
| 41 * ... | |
| 42 * NULL | |
| 43 */ | |
| 44 | |
| 45 /* TODO(robertm): find a header to put this in/get it from, e.g. nacl_config */ | |
| 46 | |
| 47 #include "native_client/src/trusted/service_runtime/nacl_config.h" | |
| 48 | |
| 49 .data | |
| 50 .globl environ | |
| 51 | |
| 52 .text | |
| 53 .align NACL_ARM_BUNDLE_SIZE_LOG | |
| 54 | |
| 55 .global _start | |
| 56 | |
| 57 _start: | |
| 58 mov r11, #0 /* clear frame pointer */ | |
| 59 mov r14, #0 /* clear link register */ | |
| 60 nop | |
| 61 nop | |
| 62 /* TODO(robertm): We should be doing this in sel_ldr. */ | |
| 63 ldr r0, [sp] /* get argc */ | |
| 64 add r1, sp, #4 /* get argv */ | |
| 65 add r2, r1, r0, lsl #2 /* get envp */ | |
| 66 add r2, r2, #4 | |
| 67 | |
| 68 nop | |
| 69 nop | |
| 70 nop | |
| 71 bl __nacl_startup | |
| 72 | |
| 73 /* unreachable */ | |
| 74 bkpt 0x7777 | |
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Chromium Code Reviews
Issue 7276050:
Change startup ABI for untrusted code to be C-compatible (Closed)
Base URL: svn://svn.chromium.org/native_client/trunk/src/native_client