1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/* ----------------------------------------------------------------------- *
*
* Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
* Boston MA 02111-1307, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* entry.c
*
* Dump the entry point registers
*/
#include <string.h>
#include <stdio.h>
#include <inttypes.h>
#include <console.h>
#include <syslinux/config.h>
struct stack_frame {
uint16_t gs, fs, es, ds;
uint32_t edi, esi, ebp, esp;
uint32_t ebx, edx, ecx, eax;
uint32_t eflags;
uint16_t ret_ip, ret_cs;
uint16_t pxe_ip, pxe_cs;
};
int main(void)
{
const union syslinux_derivative_info *di;
const struct stack_frame *sf;
openconsole(&dev_null_r, &dev_stdcon_w);
di = syslinux_derivative_info();
if (di->c.filesystem != SYSLINUX_FS_PXELINUX) {
printf("Not running under PXELINUX (fs = %02x)\n", di->c.filesystem);
return 1;
}
sf = (const struct stack_frame *)di->pxe.stack;
printf("EAX: %08x EBX: %08x ECX: %08x EDX: %08x\n"
"ESP: %08x EBP: %08x ESI: %08x EDI: %08x\n"
"SS: %04x DS: %04x ES: %04x FS: %04x GS: %04x\n"
"EFLAGS: %08x RET: %04x:%04x PXE: %04x:%04x\n",
sf->eax, sf->ebx, sf->ecx, sf->edx,
sf->esp + 4, sf->ebp, sf->esi, sf->edi,
di->rr.r.fs, sf->ds, sf->es, sf->fs, sf->gs,
sf->eflags, sf->ret_cs, sf->ret_ip, sf->pxe_cs, sf->pxe_ip);
return 0;
}
|
