WebSVN – HelenOS – Diff – /tags/0.3.0/boot/arch/ia64/loader/gefi/gnuefi/reloc_ia32.c


/* reloc_ia32.c - position independent x86 ELF shared object relocator
   Copyright (C) 1999 Hewlett-Packard Co.
    Contributed by David Mosberger <davidm@hpl.hp.com>.
 
   This file is part of GNU-EFI, the GNU EFI development environment.
 
   GNU EFI 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; either version 2, or (at your option)
   any later version.
 
   GNU EFI is distributed in the hope that 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.
 
   You should have received a copy of the GNU General Public License
   along with GNU EFI; see the file COPYING.  If not, write to the Free
   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA. */
 
#include <elf.h>
#include <link.h>   /* get _DYNAMIC decl and ElfW and ELFW macros */
 
#undef NULL
#define uint64_t    efi_uint64_t
#define int64_t     efi_int64_t
#define uint32_t    efi_uint32_t
#define int32_t     efi_int32_t
#define uint16_t    efi_uint16_t
#define int16_t     efi_int16_t
#define uint8_t     efi_uint8_t
#define int8_t      efi_int8_t
 
#undef NULL
#define uint64_t    efi_uint64_t
#define int64_t     efi_int64_t
#define uint32_t    efi_uint32_t
#define int32_t     efi_int32_t
#define uint16_t    efi_uint16_t
#define int16_t     efi_int16_t
#define uint8_t     efi_uint8_t
#define int8_t      efi_int8_t
 
#include <efi.h>
#include <efilib.h>
 
int
_relocate (long ldbase, ElfW(Dyn) *dyn, EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
{
    extern EFI_STATUS efi_main (EFI_HANDLE, EFI_SYSTEM_TABLE *);
    long relsz = 0, relent = 0;
    ElfW(Rel) *rel = 0;
    int i;
 
    for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
        switch (dyn[i].d_tag) {
              case DT_REL:
            rel = (ElfW(Rel)*) ((long) dyn[i].d_un.d_ptr + ldbase);
            break;
 
              case DT_RELSZ:
            relsz = dyn[i].d_un.d_val;
            break;
 
              case DT_RELENT:
            relent = dyn[i].d_un.d_val;
            break;
 
              case DT_RELA:
            break;
 
              default:
            break;
        }
    }
 
    while (relsz > 0) {
        if (!rel || relent == 0)
            return EFI_LOAD_ERROR;
 
        /* apply the relocs */
        switch (ELF32_R_TYPE (rel->r_info)) {
              case R_386_NONE:
            break;
 
              case R_386_RELATIVE:
              {
                  long *addr;
 
                  addr = (long *) (ldbase + rel->r_offset);
                  *addr += ldbase;
                  break;
              }
 
              default:
            return EFI_LOAD_ERROR;
        }
        rel = (ElfW(Rel)*) ((char *) rel + relent);
        relsz -= relent;
    }
    return EFI_SUCCESS;
}
 

Rev 2726	Rev 2782
1	/* reloc_ia32.c - position independent x86 ELF shared object relocator	1	/* reloc_ia32.c - position independent x86 ELF shared object relocator
2	Copyright (C) 1999 Hewlett-Packard Co.	2	Copyright (C) 1999 Hewlett-Packard Co.
3	Contributed by David Mosberger <davidm@hpl.hp.com>.	3	Contributed by David Mosberger <davidm@hpl.hp.com>.
4		4
5	This file is part of GNU-EFI, the GNU EFI development environment.	5	This file is part of GNU-EFI, the GNU EFI development environment.
6		6
7	GNU EFI is free software; you can redistribute it and/or modify	7	GNU EFI is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by	8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2, or (at your option)	9	the Free Software Foundation; either version 2, or (at your option)
10	any later version.	10	any later version.
11		11
12	GNU EFI is distributed in the hope that it will be useful,	12	GNU EFI is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.	15	GNU General Public License for more details.
16		16
17	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License
18	along with GNU EFI; see the file COPYING. If not, write to the Free	18	along with GNU EFI; see the file COPYING. If not, write to the Free
19	Software Foundation, 59 Temple Place - Suite 330, Boston, MA	19	Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20	02111-1307, USA. */	20	02111-1307, USA. */
21		21
22	#include <elf.h>	22	#include <elf.h>
23	#include <link.h> /* get _DYNAMIC decl and ElfW and ELFW macros */	23	#include <link.h> /* get _DYNAMIC decl and ElfW and ELFW macros */
24		24
25	#undef NULL	25	#undef NULL
26	#define uint64_t efi_uint64_t	26	#define uint64_t efi_uint64_t
27	#define int64_t efi_int64_t	27	#define int64_t efi_int64_t
28	#define uint32_t efi_uint32_t	28	#define uint32_t efi_uint32_t
29	#define int32_t efi_int32_t	29	#define int32_t efi_int32_t
30	#define uint16_t efi_uint16_t	30	#define uint16_t efi_uint16_t
31	#define int16_t efi_int16_t	31	#define int16_t efi_int16_t
32	#define uint8_t efi_uint8_t	32	#define uint8_t efi_uint8_t
33	#define int8_t efi_int8_t	33	#define int8_t efi_int8_t
34		34
35	#undef NULL	35	#undef NULL
36	#define uint64_t efi_uint64_t	36	#define uint64_t efi_uint64_t
37	#define int64_t efi_int64_t	37	#define int64_t efi_int64_t
38	#define uint32_t efi_uint32_t	38	#define uint32_t efi_uint32_t
39	#define int32_t efi_int32_t	39	#define int32_t efi_int32_t
40	#define uint16_t efi_uint16_t	40	#define uint16_t efi_uint16_t
41	#define int16_t efi_int16_t	41	#define int16_t efi_int16_t
42	#define uint8_t efi_uint8_t	42	#define uint8_t efi_uint8_t
43	#define int8_t efi_int8_t	43	#define int8_t efi_int8_t
44		44
45	#include <efi.h>	45	#include <efi.h>
46	#include <efilib.h>	46	#include <efilib.h>
47		47
48	int	48	int
49	_relocate (long ldbase, ElfW(Dyn) dyn, EFI_HANDLE image, EFI_SYSTEM_TABLE systab)	49	_relocate (long ldbase, ElfW(Dyn) dyn, EFI_HANDLE image, EFI_SYSTEM_TABLE systab)
50	{	50	{
51	extern EFI_STATUS efi_main (EFI_HANDLE, EFI_SYSTEM_TABLE *);	51	extern EFI_STATUS efi_main (EFI_HANDLE, EFI_SYSTEM_TABLE *);
52	long relsz = 0, relent = 0;	52	long relsz = 0, relent = 0;
53	ElfW(Rel) *rel = 0;	53	ElfW(Rel) *rel = 0;
54	int i;	54	int i;
55		55
56	for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {	56	for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
57	switch (dyn[i].d_tag) {	57	switch (dyn[i].d_tag) {
58	case DT_REL:	58	case DT_REL:
59	rel = (ElfW(Rel)*) ((long) dyn[i].d_un.d_ptr + ldbase);	59	rel = (ElfW(Rel)*) ((long) dyn[i].d_un.d_ptr + ldbase);
60	break;	60	break;
61		61
62	case DT_RELSZ:	62	case DT_RELSZ:
63	relsz = dyn[i].d_un.d_val;	63	relsz = dyn[i].d_un.d_val;
64	break;	64	break;
65		65
66	case DT_RELENT:	66	case DT_RELENT:
67	relent = dyn[i].d_un.d_val;	67	relent = dyn[i].d_un.d_val;
68	break;	68	break;
69		69
70	case DT_RELA:	70	case DT_RELA:
71	break;	71	break;
72		72
73	default:	73	default:
74	break;	74	break;
75	}	75	}
76	}	76	}
77		77
78	while (relsz > 0) {	78	while (relsz > 0) {
79	if (!rel \|\| relent == 0)	79	if (!rel \|\| relent == 0)
80	return EFI_LOAD_ERROR;	80	return EFI_LOAD_ERROR;
81		81
82	/* apply the relocs */	82	/* apply the relocs */
83	switch (ELF32_R_TYPE (rel->r_info)) {	83	switch (ELF32_R_TYPE (rel->r_info)) {
84	case R_386_NONE:	84	case R_386_NONE:
85	break;	85	break;
86		86
87	case R_386_RELATIVE:	87	case R_386_RELATIVE:
88	{	88	{
89	long *addr;	89	long *addr;
90		90
91	addr = (long *) (ldbase + rel->r_offset);	91	addr = (long *) (ldbase + rel->r_offset);
92	*addr += ldbase;	92	*addr += ldbase;
93	break;	93	break;
94	}	94	}
95		95
96	default:	96	default:
97	return EFI_LOAD_ERROR;	97	return EFI_LOAD_ERROR;
98	}	98	}
99	rel = (ElfW(Rel)) ((char ) rel + relent);	99	rel = (ElfW(Rel)) ((char ) rel + relent);
100	relsz -= relent;	100	relsz -= relent;
101	}	101	}
102	return EFI_SUCCESS;	102	return EFI_SUCCESS;
103	}	103	}
104		104

Subversion Repositories HelenOS

(root)/tags/0.3.0/boot/arch/ia64/loader/gefi/gnuefi/reloc_ia32.c – Rev 2726 → 2782