/*
 * check_initial_reg_state.c - check that execve sets the correct state
 * Copyright (c) 2014-2016 Andrew Lutomirski
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#define _GNU_SOURCE

#include <stdio.h>

unsigned long ax, bx, cx, dx, si, di, bp, sp, flags;
unsigned long r8, r9, r10, r11, r12, r13, r14, r15;

asm (
	".pushsection .text\n\t"
	".type real_start, @function\n\t"
	".global real_start\n\t"
	"real_start:\n\t"
#ifdef __x86_64__
	"mov %rax, ax\n\t"
	"mov %rbx, bx\n\t"
	"mov %rcx, cx\n\t"
	"mov %rdx, dx\n\t"
	"mov %rsi, si\n\t"
	"mov %rdi, di\n\t"
	"mov %rbp, bp\n\t"
	"mov %rsp, sp\n\t"
	"mov %r8, r8\n\t"
	"mov %r9, r9\n\t"
	"mov %r10, r10\n\t"
	"mov %r11, r11\n\t"
	"mov %r12, r12\n\t"
	"mov %r13, r13\n\t"
	"mov %r14, r14\n\t"
	"mov %r15, r15\n\t"
	"pushfq\n\t"
	"popq flags\n\t"
#else
	"mov %eax, ax\n\t"
	"mov %ebx, bx\n\t"
	"mov %ecx, cx\n\t"
	"mov %edx, dx\n\t"
	"mov %esi, si\n\t"
	"mov %edi, di\n\t"
	"mov %ebp, bp\n\t"
	"mov %esp, sp\n\t"
	"pushfl\n\t"
	"popl flags\n\t"
#endif
	"jmp _start\n\t"
	".size real_start, . - real_start\n\t"
	".popsection");

int main()
{
	int nerrs = 0;

	if (sp == 0) {
		printf("[FAIL]\tTest was built incorrectly\n");
		return 1;
	}

	if (ax || bx || cx || dx || si || di || bp
#ifdef __x86_64__
	    || r8 || r9 || r10 || r11 || r12 || r13 || r14 || r15
#endif
		) {
		printf("[FAIL]\tAll GPRs except SP should be 0\n");
#define SHOW(x) printf("\t" #x " = 0x%lx\n", x);
		SHOW(ax);
		SHOW(bx);
		SHOW(cx);
		SHOW(dx);
		SHOW(si);
		SHOW(di);
		SHOW(bp);
		SHOW(sp);
#ifdef __x86_64__
		SHOW(r8);
		SHOW(r9);
		SHOW(r10);
		SHOW(r11);
		SHOW(r12);
		SHOW(r13);
		SHOW(r14);
		SHOW(r15);
#endif
		nerrs++;
	} else {
		printf("[OK]\tAll GPRs except SP are 0\n");
	}

	if (flags != 0x202) {
		printf("[FAIL]\tFLAGS is 0x%lx, but it should be 0x202\n", flags);
		nerrs++;
	} else {
		printf("[OK]\tFLAGS is 0x202\n");
	}

	return nerrs ? 1 : 0;
}
on>
</select>
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</form>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=5add6e4a222f2eb437992af6b39c8a9c9a28604a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=5add6e4a222f2eb437992af6b39c8a9c9a28604a'>include</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include?id=5add6e4a222f2eb437992af6b39c8a9c9a28604a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=242bd2d519d7194633e309286ba7ba29a1ad63e8'>sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Requ...</a></td><td>Xin Long</td><td>2</td><td><span class='deletions'>-0</span>/<span class='insertions'>+9</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=78098117f8bfad4f2104c3f7b6b69071af95a246'>sctp: add support for generating stream reconf add incoming/outgoing streams ...</a></td><td>Xin Long</td><td>2</td><td><span class='deletions'>-0</span>/<span class='insertions'>+10</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=a92ce1a42dde1caaee4afae67531e3e7acecf6e4'>sctp: implement sender-side procedures for SSN/TSN Reset Request Parameter</a></td><td>Xin Long</td><td>2</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=c56480a1e90261842f54f3a5a9ebc12d827f0c3e'>sctp: add support for generating stream reconf ssn/tsn reset request chunk</a></td><td>Xin Long</td><td>2</td><td><span class='deletions'>-0</span>/<span class='insertions'>+7</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=9faf1c0fd5a943e498dbc0c86ff42e965b347d08'>sctp: drop unnecessary __packed from some stream reconf structures</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-08 15:25:18 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=982acb97560c8118c2109504a22b0d78a580547d'>ipv4: fib: Notify about nexthop status changes</a></td><td>Ido Schimmel</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+7</span></td></tr>
<tr><td><span title='2017-02-08 15:11:22 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=6a2cac549b368960c9cd6a993f2f2cc6d720e935'>net: stmmac: Remove the bus_setup function pointer</a></td><td>LABBE Corentin</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-08 14:38:18 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=97e219b7c1f75b14b29abe28ad53e8709e8d15e5'>gro_cells: move to net/core/gro_cells.c</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-82</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-08 13:29:04 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>net: phy: Add LED mode driver for Microsemi PHYs.</a></td><td>Raju Lakkaraju