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authorArnd Bergmann <arnd@arndb.de>2018-03-07 15:36:19 -0500
committerArnd Bergmann <arnd@arndb.de>2018-03-09 17:20:00 -0500
commit553b085c2075f6a4a2591108554f830fa61e881f (patch)
tree68d63911f2c12e0fb9fa23498df9300442a88f92 /arch/m32r/include/asm/flat.h
parentfd8773f9f544955f6f47dc2ac3ab85ad64376b7f (diff)
arch: remove m32r port
The Mitsubishi/Renesas m32r architecture has been around for many years, but the Linux port has been obsolete for a very long time as well, with the last significant updates done for linux-2.6.14. While some m32r microcontrollers are still being marketed by Renesas, those are apparently no longer possible to support, mainly due to the lack of an external memory interface. Hirokazu Takata was the maintainer until the architecture got marked Orphaned in 2014. Link: http://www.linux-m32r.org/ Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/m32r/include/asm/flat.h')
-rw-r--r--arch/m32r/include/asm/flat.h143
1 files changed, 0 insertions, 143 deletions
diff --git a/arch/m32r/include/asm/flat.h b/arch/m32r/include/asm/flat.h
deleted file mode 100644
index dfcb0e4eb256..000000000000
--- a/arch/m32r/include/asm/flat.h
+++ /dev/null
@@ -1,143 +0,0 @@
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_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
21/* Convert a relocation entry into an address. */
22static inline unsigned long
23flat_get_relocate_addr (unsigned long relval)
24{
25 return relval & 0x00ffffff; /* Mask out top 8-bits */
26}
27
28#define flat_m32r_get_reloc_type(relval) ((relval) >> 24)
29
30#define M32R_SETH_OPCODE 0xd0c00000 /* SETH instruction code */
31
32#define FLAT_M32R_32 0x00 /* 32bits reloc */
33#define FLAT_M32R_24 0x01 /* unsigned 24bits reloc */
34#define FLAT_M32R_16 0x02 /* 16bits reloc */
35#define FLAT_M32R_LO16 0x03 /* signed low 16bits reloc (low()) */
36#define FLAT_M32R_LO16_DATA 0x04 /* signed low 16bits reloc (low())
37 for a symbol in .data section */
38 /* High 16bits of an address used
39 when the lower 16bbits are treated
40 as unsigned.
41 To create SETH instruction only.
42 0x1X: X means a number of register.
43 0x10 - 0x3F are reserved. */
44#define FLAT_M32R_HI16_ULO 0x10 /* reloc for SETH Rn,#high(imm16) */
45 /* High 16bits of an address used
46 when the lower 16bbits are treated
47 as signed.
48 To create SETH instruction only.
49 0x2X: X means a number of register.
50 0x20 - 0x4F are reserved. */
51#define FLAT_M32R_HI16_SLO 0x20 /* reloc for SETH Rn,#shigh(imm16) */
52
53static unsigned long textlen_for_m32r_lo16_data = 0;
54
55static inline unsigned long m32r_flat_get_addr_from_rp (u32 *rp,
56 u32 relval,
57 u32 textlen)
58{
59 unsigned int reloc = flat_m32r_get_reloc_type (relval);
60 textlen_for_m32r_lo16_data = 0;
61 if (reloc & 0xf0) {
62 unsigned long addr = htonl(*rp);
63 switch (reloc & 0xf0)
64 {
65 case FLAT_M32R_HI16_ULO:
66 case FLAT_M32R_HI16_SLO:
67 if (addr == 0) {
68 /* put "seth Rn,#0x0" instead of 0 (addr). */
69 *rp = (M32R_SETH_OPCODE | ((reloc & 0x0f)<<24));
70 }
71 return addr;
72 default:
73 break;
74 }
75 } else {
76 switch (reloc)
77 {
78 case FLAT_M32R_LO16:
79 return htonl(*rp) & 0xFFFF;
80 case FLAT_M32R_LO16_DATA:
81 /* FIXME: The return value will decrease by textlen
82 at m32r_flat_put_addr_at_rp () */
83 textlen_for_m32r_lo16_data = textlen;
84 return (htonl(*rp) & 0xFFFF) + textlen;
85 case FLAT_M32R_16:
86 return htons(*(unsigned short *)rp) & 0xFFFF;
87 case FLAT_M32R_24:
88 return htonl(*rp) & 0xFFFFFF;
89 case FLAT_M32R_32:
90 return htonl(*rp);
91 default:
92 break;
93 }
94 }
95 return ~0; /* bogus value */
96}
97
98static inline int flat_put_addr_at_rp(u32 *rp, u32 addr, u32 relval)
99{
100 unsigned int reloc = flat_m32r_get_reloc_type (relval);
101 if (reloc & 0xf0) {
102 unsigned long Rn = reloc & 0x0f; /* get a number of register */
103 Rn <<= 24; /* 0x0R000000 */
104 reloc &= 0xf0;
105 switch (reloc)
106 {
107 case FLAT_M32R_HI16_ULO: /* To create SETH Rn,#high(imm16) */
108 *rp = (M32R_SETH_OPCODE | Rn
109 | ((addr >> 16) & 0xFFFF));
110 break;
111 case FLAT_M32R_HI16_SLO: /* To create SETH Rn,#shigh(imm16) */
112 *rp = (M32R_SETH_OPCODE | Rn
113 | (((addr >> 16) + ((addr & 0x8000) ? 1 : 0))
114 & 0xFFFF));
115 break;
116 }
117 } else {
118 switch (reloc) {
119 case FLAT_M32R_LO16_DATA:
120 addr -= textlen_for_m32r_lo16_data;
121 textlen_for_m32r_lo16_data = 0;
122 case FLAT_M32R_LO16:
123 *rp = (htonl(*rp) & 0xFFFF0000) | (addr & 0xFFFF);
124 break;
125 case FLAT_M32R_16:
126 *(unsigned short *)rp = addr & 0xFFFF;
127 break;
128 case FLAT_M32R_24:
129 *rp = (htonl(*rp) & 0xFF000000) | (addr & 0xFFFFFF);
130 break;
131 case FLAT_M32R_32:
132 *rp = addr;
133 break;
134 }
135 }
136 return 0;
137}
138
139// kludge - text_len is a local variable in the only user.
140#define flat_get_addr_from_rp(rp, relval, flags, addr, persistent) \
141 (m32r_flat_get_addr_from_rp(rp, relval, text_len), 0)
142
143#endif /* __ASM_M32R_FLAT_H */
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