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4 * Copyright (c) 2013 Stacey D. Son
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 #ifndef _TARGET_ARCH_ELF_H_
20 #define _TARGET_ARCH_ELF_H_
22 #define ELF_START_MMAP 0x80000000
23 #define ELF_ET_DYN_LOAD_ADDR 0x500000
25 #define elf_check_arch(x) ((x) == EM_ARM)
27 #define ELF_CLASS ELFCLASS32
28 #define ELF_DATA ELFDATA2LSB
29 #define ELF_ARCH EM_ARM
31 #define USE_ELF_CORE_DUMP
32 #define ELF_EXEC_PAGESIZE 4096
34 #define ELF_HWCAP get_elf_hwcap()
36 #define GET_FEATURE(feat, hwcap) \
37 do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
39 #define GET_FEATURE_ID(feat, hwcap) \
40 do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
43 ARM_HWCAP_ARM_SWP
= 1 << 0,
44 ARM_HWCAP_ARM_HALF
= 1 << 1,
45 ARM_HWCAP_ARM_THUMB
= 1 << 2,
46 ARM_HWCAP_ARM_26BIT
= 1 << 3,
47 ARM_HWCAP_ARM_FAST_MULT
= 1 << 4,
48 ARM_HWCAP_ARM_FPA
= 1 << 5,
49 ARM_HWCAP_ARM_VFP
= 1 << 6,
50 ARM_HWCAP_ARM_EDSP
= 1 << 7,
51 ARM_HWCAP_ARM_JAVA
= 1 << 8,
52 ARM_HWCAP_ARM_IWMMXT
= 1 << 9,
53 ARM_HWCAP_ARM_CRUNCH
= 1 << 10,
54 ARM_HWCAP_ARM_THUMBEE
= 1 << 11,
55 ARM_HWCAP_ARM_NEON
= 1 << 12,
56 ARM_HWCAP_ARM_VFPv3
= 1 << 13,
57 ARM_HWCAP_ARM_VFPv3D16
= 1 << 14,
58 ARM_HWCAP_ARM_TLS
= 1 << 15,
59 ARM_HWCAP_ARM_VFPv4
= 1 << 16,
60 ARM_HWCAP_ARM_IDIVA
= 1 << 17,
61 ARM_HWCAP_ARM_IDIVT
= 1 << 18,
62 ARM_HWCAP_ARM_VFPD32
= 1 << 19,
63 ARM_HWCAP_ARM_LPAE
= 1 << 20,
64 ARM_HWCAP_ARM_EVTSTRM
= 1 << 21,
67 static uint32_t get_elf_hwcap(void)
69 ARMCPU
*cpu
= ARM_CPU(thread_cpu
);
72 hwcaps
|= ARM_HWCAP_ARM_SWP
;
73 hwcaps
|= ARM_HWCAP_ARM_HALF
;
74 hwcaps
|= ARM_HWCAP_ARM_THUMB
;
75 hwcaps
|= ARM_HWCAP_ARM_FAST_MULT
;
77 /* probe for the extra features */
78 /* EDSP is in v5TE and above */
79 GET_FEATURE(ARM_FEATURE_V5
, ARM_HWCAP_ARM_EDSP
);
80 GET_FEATURE(ARM_FEATURE_IWMMXT
, ARM_HWCAP_ARM_IWMMXT
);
81 GET_FEATURE(ARM_FEATURE_THUMB2EE
, ARM_HWCAP_ARM_THUMBEE
);
82 GET_FEATURE(ARM_FEATURE_NEON
, ARM_HWCAP_ARM_NEON
);
83 GET_FEATURE(ARM_FEATURE_V6K
, ARM_HWCAP_ARM_TLS
);
84 GET_FEATURE(ARM_FEATURE_LPAE
, ARM_HWCAP_ARM_LPAE
);
85 GET_FEATURE_ID(aa32_arm_div
, ARM_HWCAP_ARM_IDIVA
);
86 GET_FEATURE_ID(aa32_thumb_div
, ARM_HWCAP_ARM_IDIVT
);
87 GET_FEATURE_ID(aa32_vfp
, ARM_HWCAP_ARM_VFP
);
89 if (cpu_isar_feature(aa32_fpsp_v3
, cpu
) ||
90 cpu_isar_feature(aa32_fpdp_v3
, cpu
)) {
91 hwcaps
|= ARM_HWCAP_ARM_VFPv3
;
92 if (cpu_isar_feature(aa32_simd_r32
, cpu
)) {
93 hwcaps
|= ARM_HWCAP_ARM_VFPD32
;
95 hwcaps
|= ARM_HWCAP_ARM_VFPv3D16
;
98 GET_FEATURE_ID(aa32_simdfmac
, ARM_HWCAP_ARM_VFPv4
);
104 #undef GET_FEATURE_ID
106 #endif /* _TARGET_ARCH_ELF_H_ */