diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m32r/flat.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-m32r/flat.h')
-rw-r--r-- | include/asm-m32r/flat.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/include/asm-m32r/flat.h b/include/asm-m32r/flat.h new file mode 100644 index 000000000000..1b285f65cab6 --- /dev/null +++ b/include/asm-m32r/flat.h | |||
@@ -0,0 +1,145 @@ | |||
1 | /* | ||
2 | * include/asm-m32r/flat.h | ||
3 | * | ||
4 | * uClinux flat-format executables | ||
5 | * | ||
6 | * Copyright (C) 2004 Kazuhiro Inaoka | ||
7 | * | ||
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 | ||
10 | * more details. | ||
11 | */ | ||
12 | #ifndef __ASM_M32R_FLAT_H | ||
13 | #define __ASM_M32R_FLAT_H | ||
14 | |||
15 | #define flat_stack_align(sp) (*sp += (*sp & 3 ? (4 - (*sp & 3)): 0)) | ||
16 | #define flat_argvp_envp_on_stack() 0 | ||
17 | #define flat_old_ram_flag(flags) (flags) | ||
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) \ | ||
21 | m32r_flat_get_addr_from_rp(rp, relval, (text_len) ) | ||
22 | |||
23 | #define flat_put_addr_at_rp(rp, addr, relval) \ | ||
24 | m32r_flat_put_addr_at_rp(rp, addr, relval) | ||
25 | |||
26 | /* Convert a relocation entry into an address. */ | ||
27 | static inline unsigned long | ||
28 | flat_get_relocate_addr (unsigned long relval) | ||
29 | { | ||
30 | return relval & 0x00ffffff; /* Mask out top 8-bits */ | ||
31 | } | ||
32 | |||
33 | #define flat_m32r_get_reloc_type(relval) ((relval) >> 24) | ||
34 | |||
35 | #define M32R_SETH_OPCODE 0xd0c00000 /* SETH instruction code */ | ||
36 | |||
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 | ||
45 | as unsigned. | ||
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 | ||
52 | as signed. | ||
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) */ | ||
57 | |||
58 | static unsigned long textlen_for_m32r_lo16_data = 0; | ||
59 | |||
60 | static inline unsigned long m32r_flat_get_addr_from_rp (unsigned long *rp, | ||
61 | unsigned long relval, | ||
62 | unsigned long textlen) | ||
63 | { | ||
64 | unsigned int reloc = flat_m32r_get_reloc_type (relval); | ||
65 | textlen_for_m32r_lo16_data = 0; | ||
66 | if (reloc & 0xf0) { | ||
67 | unsigned long addr = htonl(*rp); | ||
68 | switch (reloc & 0xf0) | ||
69 | { | ||
70 | case FLAT_M32R_HI16_ULO: | ||
71 | case FLAT_M32R_HI16_SLO: | ||
72 | if (addr == 0) { | ||
73 | /* put "seth Rn,#0x0" instead of 0 (addr). */ | ||
74 | *rp = (M32R_SETH_OPCODE | ((reloc & 0x0f)<<24)); | ||
75 | } | ||
76 | return addr; | ||
77 | default: | ||
78 | break; | ||
79 | } | ||
80 | } else { | ||
81 | switch (reloc) | ||
82 | { | ||
83 | case FLAT_M32R_LO16: | ||
84 | return htonl(*rp) & 0xFFFF; | ||
85 | case FLAT_M32R_LO16_DATA: | ||
86 | /* FIXME: The return value will decrease by textlen | ||
87 | at m32r_flat_put_addr_at_rp () */ | ||
88 | textlen_for_m32r_lo16_data = textlen; | ||
89 | return (htonl(*rp) & 0xFFFF) + textlen; | ||
90 | case FLAT_M32R_16: | ||
91 | return htons(*(unsigned short *)rp) & 0xFFFF; | ||
92 | case FLAT_M32R_24: | ||
93 | return htonl(*rp) & 0xFFFFFF; | ||
94 | case FLAT_M32R_32: | ||
95 | return htonl(*rp); | ||
96 | default: | ||
97 | break; | ||
98 | } | ||
99 | } | ||
100 | return ~0; /* bogus value */ | ||
101 | } | ||
102 | |||
103 | static inline void m32r_flat_put_addr_at_rp (unsigned long *rp, | ||
104 | unsigned long addr, | ||
105 | unsigned long relval) | ||
106 | { | ||
107 | unsigned int reloc = flat_m32r_get_reloc_type (relval); | ||
108 | if (reloc & 0xf0) { | ||
109 | unsigned long Rn = reloc & 0x0f; /* get a number of register */ | ||
110 | Rn <<= 24; /* 0x0R000000 */ | ||
111 | reloc &= 0xf0; | ||
112 | switch (reloc) | ||
113 | { | ||
114 | case FLAT_M32R_HI16_ULO: /* To create SETH Rn,#high(imm16) */ | ||
115 | *rp = (M32R_SETH_OPCODE | Rn | ||
116 | | ((addr >> 16) & 0xFFFF)); | ||
117 | break; | ||
118 | case FLAT_M32R_HI16_SLO: /* To create SETH Rn,#shigh(imm16) */ | ||
119 | *rp = (M32R_SETH_OPCODE | Rn | ||
120 | | (((addr >> 16) + ((addr & 0x8000) ? 1 : 0)) | ||
121 | & 0xFFFF)); | ||
122 | break; | ||
123 | } | ||
124 | } else { | ||
125 | switch (reloc) { | ||
126 | case FLAT_M32R_LO16_DATA: | ||
127 | addr -= textlen_for_m32r_lo16_data; | ||
128 | textlen_for_m32r_lo16_data = 0; | ||
129 | case FLAT_M32R_LO16: | ||
130 | *rp = (htonl(*rp) & 0xFFFF0000) | (addr & 0xFFFF); | ||
131 | break; | ||
132 | case FLAT_M32R_16: | ||
133 | *(unsigned short *)rp = addr & 0xFFFF; | ||
134 | break; | ||
135 | case FLAT_M32R_24: | ||
136 | *rp = (htonl(*rp) & 0xFF000000) | (addr & 0xFFFFFF); | ||
137 | break; | ||
138 | case FLAT_M32R_32: | ||
139 | *rp = addr; | ||
140 | break; | ||
141 | } | ||
142 | } | ||
143 | } | ||
144 | |||
145 | #endif /* __ASM_M32R_FLAT_H */ | ||