1 /* coff information for Renesas SH
2 
3    Copyright (C) 2000-2016 Free Software Foundation, Inc.
4 
5    This program is free software; you can redistribute it and/or modify
6    it under the terms of the GNU General Public License as published by
7    the Free Software Foundation; either version 3 of the License, or
8    (at your option) any later version.
9 
10    This program is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13    GNU General Public License for more details.
14 
15    You should have received a copy of the GNU General Public License
16    along with this program; if not, write to the Free Software
17    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
18    MA 02110-1301, USA.  */
19 
20 #ifdef COFF_WITH_PE
21 #define L_LNNO_SIZE 2
22 #else
23 #define L_LNNO_SIZE 4
24 #endif
25 #define INCLUDE_COMDAT_FIELDS_IN_AUXENT
26 #include "coff/external.h"
27 
28 #define	SH_ARCH_MAGIC_BIG	0x0500
29 #define	SH_ARCH_MAGIC_LITTLE	0x0550  /* Little endian SH */
30 #define SH_ARCH_MAGIC_WINCE	0x01a2  /* Windows CE - little endian */
31 #define SH_PE_MAGIC		0x010b
32 
33 #define SHBADMAG(x) \
34  (((x).f_magic != SH_ARCH_MAGIC_BIG) && \
35   ((x).f_magic != SH_ARCH_MAGIC_WINCE) && \
36   ((x).f_magic != SH_ARCH_MAGIC_LITTLE))
37 
38 /* Define some NT default values.  */
39 /*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
40 #define NT_SECTION_ALIGNMENT 0x1000
41 #define NT_FILE_ALIGNMENT    0x200
42 #define NT_DEF_RESERVE       0x100000
43 #define NT_DEF_COMMIT        0x1000
44 
45 /********************** RELOCATION DIRECTIVES **********************/
46 
47 /* The external reloc has an offset field, because some of the reloc
48    types on the h8 don't have room in the instruction for the entire
49    offset - eg the strange jump and high page addressing modes.  */
50 
51 #ifndef COFF_WITH_PE
52 struct external_reloc
53 {
54   char r_vaddr[4];
55   char r_symndx[4];
56   char r_offset[4];
57   char r_type[2];
58   char r_stuff[2];
59 };
60 #else
61 struct external_reloc
62 {
63   char r_vaddr[4];
64   char r_symndx[4];
65   char r_type[2];
66 };
67 #endif
68 
69 #define RELOC struct external_reloc
70 #ifdef COFF_WITH_PE
71 #define RELSZ 10
72 #else
73 #define RELSZ 16
74 #endif
75 
76 /* SH relocation types.  Not all of these are actually used.  */
77 
78 #define R_SH_UNUSED	0		/* only used internally */
79 #define R_SH_IMM32CE	2		/* 32 bit immediate for WinCE */
80 #define R_SH_PCREL8 	3		/*  8 bit pcrel 	*/
81 #define R_SH_PCREL16 	4		/* 16 bit pcrel 	*/
82 #define R_SH_HIGH8  	5		/* high 8 bits of 24 bit address */
83 #define R_SH_LOW16 	7		/* low 16 bits of 24 bit immediate */
84 #define R_SH_IMM24	6		/* 24 bit immediate */
85 #define R_SH_PCDISP8BY4	9  		/* PC rel 8 bits *4 +ve */
86 #define R_SH_PCDISP8BY2	10  		/* PC rel 8 bits *2 +ve */
87 #define R_SH_PCDISP8    11  		/* 8 bit branch */
88 #define R_SH_PCDISP     12  		/* 12 bit branch */
89 #define R_SH_IMM32      14    		/* 32 bit immediate */
90 #define R_SH_IMM8   	16		/* 8 bit immediate */
91 #define R_SH_IMAGEBASE	16		/* Windows CE */
92 #define R_SH_IMM8BY2    17		/* 8 bit immediate *2 */
93 #define R_SH_IMM8BY4    18		/* 8 bit immediate *4 */
94 #define R_SH_IMM4   	19		/* 4 bit immediate */
95 #define R_SH_IMM4BY2    20		/* 4 bit immediate *2 */
96 #define R_SH_IMM4BY4    21		/* 4 bit immediate *4 */
97 #define R_SH_PCRELIMM8BY2   22		/* PC rel 8 bits *2 unsigned */
98 #define R_SH_PCRELIMM8BY4   23		/* PC rel 8 bits *4 unsigned */
99 #define R_SH_IMM16      24    		/* 16 bit immediate */
100 
101 /* The switch table reloc types are used for relaxing.  They are
102    generated for expressions such as
103      .word L1 - L2
104    The r_offset field holds the difference between the reloc address
105    and L2.  */
106 #define R_SH_SWITCH8	33		/* 8 bit switch table entry */
107 #define R_SH_SWITCH16	25		/* 16 bit switch table entry */
108 #define R_SH_SWITCH32	26		/* 32 bit switch table entry */
109 
110 /* The USES reloc type is used for relaxing.  The compiler will
111    generate .uses pseudo-ops when it finds a function call which it
112    can relax.  The r_offset field of the USES reloc holds the PC
113    relative offset to the instruction which loads the register used in
114    the function call.  */
115 #define R_SH_USES	27		/* .uses pseudo-op */
116 
117 /* The COUNT reloc type is used for relaxing.  The assembler will
118    generate COUNT relocs for addresses referred to by the register
119    loads associated with USES relocs.  The r_offset field of the COUNT
120    reloc holds the number of times the address is referenced in the
121    object file.  */
122 #define R_SH_COUNT	28		/* Count of constant pool uses */
123 
124 /* The ALIGN reloc type is used for relaxing.  The r_offset field is
125    the power of two to which subsequent portions of the object file
126    must be aligned.  */
127 #define R_SH_ALIGN	29		/* .align pseudo-op */
128 
129 /* The CODE and DATA reloc types are used for aligning load and store
130    instructions.  The assembler will generate a CODE reloc before a
131    block of instructions.  It will generate a DATA reloc before data.
132    A section should be processed assuming it contains data, unless a
133    CODE reloc is seen.  The only relevant pieces of information in the
134    CODE and DATA relocs are the section and the address.  The symbol
135    and offset are meaningless.  */
136 #define R_SH_CODE	30		/* start of code */
137 #define R_SH_DATA	31		/* start of data */
138 
139 /* The LABEL reloc type is used for aligning load and store
140    instructions.  The assembler will generate a LABEL reloc for each
141    label within a block of instructions.  This permits the linker to
142    avoid swapping instructions which are the targets of branches.  */
143 #define R_SH_LABEL	32		/* label */
144 
145 /* NB: R_SH_SWITCH8 is 33 */
146 
147 #define R_SH_LOOP_START	34
148 #define R_SH_LOOP_END	35
149