67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
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* Boston MA 02111-1307, USA; either version 2 of the License, or
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* (at your option) any later version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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/*
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* entry.c
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*
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* Dump the entry point registers
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*/
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#include <string.h>
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#include <stdio.h>
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#include <inttypes.h>
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#include <console.h>
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#include <syslinux/config.h>
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struct stack_frame {
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uint16_t gs, fs, es, ds;
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uint32_t edi, esi, ebp, esp;
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uint32_t ebx, edx, ecx, eax;
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uint32_t eflags;
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uint16_t ret_ip, ret_cs;
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uint16_t pxe_ip, pxe_cs;
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};
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int main(void)
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{
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const union syslinux_derivative_info *di;
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const struct stack_frame *sf;
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#if 0
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/* this hangs! */
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openconsole(&dev_null_r, &dev_stdcon_w);
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#else
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/* this works */
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openconsole(&dev_rawcon_r, &dev_ansiserial_w);
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#endif
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di = syslinux_derivative_info();
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if (di->c.filesystem != SYSLINUX_FS_PXELINUX) {
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printf("Not running under PXELINUX (fs = %02x)\n", di->c.filesystem);
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return 1;
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}
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sf = (const struct stack_frame *)di->pxe.stack;
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printf("EAX: %08x EBX: %08x ECX: %08x EDX: %08x\n"
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"ESP: %08x EBP: %08x ESI: %08x EDI: %08x\n"
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"SS: %04x DS: %04x ES: %04x FS: %04x GS: %04x\n"
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"EFLAGS: %08x RET: %04x:%04x PXE: %04x:%04x\n",
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sf->eax, sf->ebx, sf->ecx, sf->edx,
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sf->esp + 4, sf->ebp, sf->esi, sf->edi,
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di->rr.r.fs, sf->ds, sf->es, sf->fs, sf->gs,
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sf->eflags, sf->ret_cs, sf->ret_ip, sf->pxe_cs, sf->pxe_ip);
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return 0;
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}
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