2 * include/asm-m32r/flat.h
4 * uClinux flat-format executables
6 * Copyright (C) 2004 Kazuhiro Inaoka
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive for
12 #ifndef __ASM_M32R_FLAT_H
13 #define __ASM_M32R_FLAT_H
15 #define flat_argvp_envp_on_stack() 0
16 #define flat_old_ram_flag(flags) (flags)
17 #define flat_set_persistent(relval, p) 0
18 #define flat_reloc_valid(reloc, size) \
19 (((reloc) - textlen_for_m32r_lo16_data) <= (size))
20 #define flat_get_addr_from_rp(rp, relval, flags, persistent) \
21 m32r_flat_get_addr_from_rp(rp, relval, (text_len) )
23 #define flat_put_addr_at_rp(rp, addr, relval) \
24 m32r_flat_put_addr_at_rp(rp, addr, relval)
26 /* Convert a relocation entry into an address. */
27 static inline unsigned long
28 flat_get_relocate_addr (unsigned long relval
)
30 return relval
& 0x00ffffff; /* Mask out top 8-bits */
33 #define flat_m32r_get_reloc_type(relval) ((relval) >> 24)
35 #define M32R_SETH_OPCODE 0xd0c00000 /* SETH instruction code */
37 #define FLAT_M32R_32 0x00 /* 32bits reloc */
38 #define FLAT_M32R_24 0x01 /* unsigned 24bits reloc */
39 #define FLAT_M32R_16 0x02 /* 16bits reloc */
40 #define FLAT_M32R_LO16 0x03 /* signed low 16bits reloc (low()) */
41 #define FLAT_M32R_LO16_DATA 0x04 /* signed low 16bits reloc (low())
42 for a symbol in .data section */
43 /* High 16bits of an address used
44 when the lower 16bbits are treated
46 To create SETH instruction only.
47 0x1X: X means a number of register.
48 0x10 - 0x3F are reserved. */
49 #define FLAT_M32R_HI16_ULO 0x10 /* reloc for SETH Rn,#high(imm16) */
50 /* High 16bits of an address used
51 when the lower 16bbits are treated
53 To create SETH instruction only.
54 0x2X: X means a number of register.
55 0x20 - 0x4F are reserved. */
56 #define FLAT_M32R_HI16_SLO 0x20 /* reloc for SETH Rn,#shigh(imm16) */
58 static unsigned long textlen_for_m32r_lo16_data
= 0;
60 static inline unsigned long m32r_flat_get_addr_from_rp (unsigned long *rp
,
62 unsigned long textlen
)
64 unsigned int reloc
= flat_m32r_get_reloc_type (relval
);
65 textlen_for_m32r_lo16_data
= 0;
67 unsigned long addr
= htonl(*rp
);
70 case FLAT_M32R_HI16_ULO
:
71 case FLAT_M32R_HI16_SLO
:
73 /* put "seth Rn,#0x0" instead of 0 (addr). */
74 *rp
= (M32R_SETH_OPCODE
| ((reloc
& 0x0f)<<24));
84 return htonl(*rp
) & 0xFFFF;
85 case FLAT_M32R_LO16_DATA
:
86 textlen_for_m32r_lo16_data
= textlen
;
87 return (htonl(*rp
) & 0xFFFF) + textlen
;
89 return htons(*(unsigned short *)rp
) & 0xFFFF;
91 return htonl(*rp
) & 0xFFFFFF;
98 return ~0; /* bogus value */
101 static inline void m32r_flat_put_addr_at_rp (unsigned long *rp
,
103 unsigned long relval
)
105 unsigned int reloc
= flat_m32r_get_reloc_type (relval
);
107 unsigned long Rn
= reloc
& 0x0f; /* get a number of register */
108 Rn
<<= 24; /* 0x0R000000 */
112 case FLAT_M32R_HI16_ULO
: /* To create SETH Rn,#high(imm16) */
113 *rp
= (M32R_SETH_OPCODE
| Rn
114 | ((addr
>> 16) & 0xFFFF));
116 case FLAT_M32R_HI16_SLO
: /* To create SETH Rn,#shigh(imm16) */
117 *rp
= (M32R_SETH_OPCODE
| Rn
118 | (((addr
>> 16) + ((addr
& 0x8000) ? 1 : 0))
124 case FLAT_M32R_LO16_DATA
:
125 addr
-= textlen_for_m32r_lo16_data
;
126 textlen_for_m32r_lo16_data
= 0;
128 *rp
= (htonl(*rp
) & 0xFFFF0000) | (addr
& 0xFFFF);
131 *(unsigned short *)rp
= addr
& 0xFFFF;
134 *rp
= (htonl(*rp
) & 0xFF000000) | (addr
& 0xFFFFFF);
143 #endif /* __ASM_M32R_FLAT_H */