165 lines
5.4 KiB
C++
165 lines
5.4 KiB
C++
/////////////////////////////////////////////////////////////////////////
|
|
// $Id: linux.cc,v 1.1 2003-11-28 15:07:25 danielg4 Exp $
|
|
/////////////////////////////////////////////////////////////////////////
|
|
//
|
|
#include <stdio.h>
|
|
#include "bochs.h"
|
|
#if BX_DEBUGGER
|
|
|
|
#define LOG_THIS genlog->
|
|
|
|
// for Linux segment numbers
|
|
// these numbers are from <asm/segment.h>
|
|
#define KERNEL_CS 0x10
|
|
#define USER_CS 0x18
|
|
|
|
void
|
|
bx_dbg_info_linux_command (void)
|
|
{
|
|
BX_INFO (("Info linux"));
|
|
bx_dbg_cpu_t cpu;
|
|
BX_CPU(dbg_cpu)->dbg_get_cpu(&cpu);
|
|
|
|
int mode;
|
|
if (cpu.cr0 & 1) {
|
|
// protected mode
|
|
if (cpu.cs.sel == KERNEL_CS) {
|
|
mode = 'k';
|
|
fprintf (stderr, "Processor mode: kernel\n");
|
|
} else if (cpu.cs.sel == USER_CS) {
|
|
fprintf (stderr, "Processor mode: user\n");
|
|
mode = 'u';
|
|
} else {
|
|
mode = '?';
|
|
fprintf (stderr, "Processor mode: ??? protected=1 but unrecognized CS\n");
|
|
}
|
|
} else {
|
|
mode = 'r';
|
|
fprintf (stderr, "Processor mode: real-address mode, maybe during boot sequence\n");
|
|
}
|
|
if (mode != 'u') return;
|
|
/* user mode, look through registers and memory to find our process ID */
|
|
|
|
#if 0
|
|
fprintf(stderr, "eax:0x%x\n", (unsigned) cpu.eax);
|
|
fprintf(stderr, "ebx:0x%x\n", (unsigned) cpu.ebx);
|
|
fprintf(stderr, "ecx:0x%x\n", (unsigned) cpu.ecx);
|
|
fprintf(stderr, "edx:0x%x\n", (unsigned) cpu.edx);
|
|
fprintf(stderr, "ebp:0x%x\n", (unsigned) cpu.ebp);
|
|
fprintf(stderr, "esi:0x%x\n", (unsigned) cpu.esi);
|
|
fprintf(stderr, "edi:0x%x\n", (unsigned) cpu.edi);
|
|
fprintf(stderr, "esp:0x%x\n", (unsigned) cpu.esp);
|
|
fprintf(stderr, "eflags:0x%x\n", (unsigned) cpu.eflags);
|
|
fprintf(stderr, "eip:0x%x\n", (unsigned) cpu.eip);
|
|
|
|
fprintf(stderr, "cs:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.cs.sel, (unsigned) cpu.cs.des_l,
|
|
(unsigned) cpu.cs.des_h, (unsigned) cpu.cs.valid);
|
|
|
|
fprintf(stderr, "ss:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.ss.sel, (unsigned) cpu.ss.des_l,
|
|
(unsigned) cpu.ss.des_h, (unsigned) cpu.ss.valid);
|
|
|
|
fprintf(stderr, "ds:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.ds.sel, (unsigned) cpu.ds.des_l,
|
|
(unsigned) cpu.ds.des_h, (unsigned) cpu.ds.valid);
|
|
|
|
fprintf(stderr, "es:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.es.sel, (unsigned) cpu.es.des_l,
|
|
(unsigned) cpu.es.des_h, (unsigned) cpu.es.valid);
|
|
|
|
fprintf(stderr, "fs:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.fs.sel, (unsigned) cpu.fs.des_l,
|
|
(unsigned) cpu.fs.des_h, (unsigned) cpu.fs.valid);
|
|
|
|
fprintf(stderr, "gs:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.gs.sel, (unsigned) cpu.gs.des_l,
|
|
(unsigned) cpu.gs.des_h, (unsigned) cpu.gs.valid);
|
|
|
|
fprintf(stderr, "ldtr:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.ldtr.sel, (unsigned) cpu.ldtr.des_l,
|
|
(unsigned) cpu.ldtr.des_h, (unsigned) cpu.ldtr.valid);
|
|
|
|
fprintf(stderr, "tr:s=0x%x, dl=0x%x, dh=0x%x, valid=%u\n",
|
|
(unsigned) cpu.tr.sel, (unsigned) cpu.tr.des_l,
|
|
(unsigned) cpu.tr.des_h, (unsigned) cpu.tr.valid);
|
|
|
|
fprintf(stderr, "gdtr:base=0x%x, limit=0x%x\n",
|
|
(unsigned) cpu.gdtr.base, (unsigned) cpu.gdtr.limit);
|
|
|
|
fprintf(stderr, "idtr:base=0x%x, limit=0x%x\n",
|
|
(unsigned) cpu.idtr.base, (unsigned) cpu.idtr.limit);
|
|
|
|
fprintf(stderr, "dr0:0x%x\n", (unsigned) cpu.dr0);
|
|
fprintf(stderr, "dr1:0x%x\n", (unsigned) cpu.dr1);
|
|
fprintf(stderr, "dr2:0x%x\n", (unsigned) cpu.dr2);
|
|
fprintf(stderr, "dr3:0x%x\n", (unsigned) cpu.dr3);
|
|
fprintf(stderr, "dr6:0x%x\n", (unsigned) cpu.dr6);
|
|
fprintf(stderr, "dr7:0x%x\n", (unsigned) cpu.dr7);
|
|
|
|
fprintf(stderr, "tr3:0x%x\n", (unsigned) cpu.tr3);
|
|
fprintf(stderr, "tr4:0x%x\n", (unsigned) cpu.tr4);
|
|
fprintf(stderr, "tr5:0x%x\n", (unsigned) cpu.tr5);
|
|
fprintf(stderr, "tr6:0x%x\n", (unsigned) cpu.tr6);
|
|
fprintf(stderr, "tr7:0x%x\n", (unsigned) cpu.tr7);
|
|
|
|
fprintf(stderr, "cr0:0x%x\n", (unsigned) cpu.cr0);
|
|
fprintf(stderr, "cr1:0x%x\n", (unsigned) cpu.cr1);
|
|
fprintf(stderr, "cr2:0x%x\n", (unsigned) cpu.cr2);
|
|
fprintf(stderr, "cr3:0x%x\n", (unsigned) cpu.cr3);
|
|
fprintf(stderr, "cr4:0x%x\n", (unsigned) cpu.cr4);
|
|
|
|
fprintf(stderr, "inhibit_mask:%u\n", cpu.inhibit_mask);
|
|
#endif
|
|
|
|
}
|
|
|
|
class syscall_names_t {
|
|
#define MAX_SYSCALLS 200
|
|
char *syscall_names_linux[MAX_SYSCALLS];
|
|
public:
|
|
syscall_names_t () { init (); }
|
|
void init ();
|
|
char *get_name (int num);
|
|
};
|
|
|
|
void
|
|
syscall_names_t::init ()
|
|
{
|
|
for (int i=0; i<MAX_SYSCALLS; i++) {
|
|
syscall_names_linux[i] = "<unknown syscall>";
|
|
}
|
|
#define DEF_SYSCALL(num,name) syscall_names_linux[num] = name;
|
|
/* basically every line in the included file is a call to DEF_SYSCALL.
|
|
The preprocessor will turn each DEF_SYSCALL into an assignment
|
|
to syscall_names_linux[num]. */
|
|
#include "syscalls-linux.h"
|
|
/* now almost all the name entries have been initialized. If there
|
|
are any gaps, they still point to "<unknown syscall>". */
|
|
|
|
#if (N_SYSCALLS > MAX_SYSCALLS)
|
|
#error MAX_SYSCALLS must exceed N_SYSCALLS from syscalls-linux.h
|
|
#endif
|
|
}
|
|
|
|
char *
|
|
syscall_names_t::get_name (int n)
|
|
{
|
|
static char buf[64];
|
|
if (n < 0 || n > N_SYSCALLS) {
|
|
sprintf (buf, "syscall %d out of range", n);
|
|
return buf;
|
|
}
|
|
return syscall_names_linux[n];
|
|
}
|
|
|
|
syscall_names_t syscall_names;
|
|
|
|
void bx_dbg_linux_syscall () {
|
|
bx_dbg_cpu_t cpu;
|
|
bx_dbg_callback[0].get_cpu(&cpu);
|
|
char *name = syscall_names.get_name (cpu.eax);
|
|
fprintf (stderr, "linux system call %s (#%d)\n", name, cpu.eax);
|
|
}
|
|
#endif /* if BX_DEBUGGER */
|