File: sparc_arch.h

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/*
 * Copyright 2012-2021 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef OSSL_CRYPTO_SPARC_ARCH_H
#define OSSL_CRYPTO_SPARC_ARCH_H

#define SPARCV9_TICK_PRIVILEGED (1 << 0)
#define SPARCV9_PREFER_FPU (1 << 1)
#define SPARCV9_VIS1 (1 << 2)
#define SPARCV9_VIS2 (1 << 3) /* reserved */
#define SPARCV9_FMADD (1 << 4)
#define SPARCV9_BLK (1 << 5) /* VIS1 block copy */
#define SPARCV9_VIS3 (1 << 6)
#define SPARCV9_RANDOM (1 << 7)
#define SPARCV9_64BIT_STACK (1 << 8)
#define SPARCV9_FJAESX (1 << 9) /* Fujitsu SPARC64 X AES */
#define SPARCV9_FJDESX (1 << 10) /* Fujitsu SPARC64 X DES, reserved */
#define SPARCV9_FJHPCACE (1 << 11) /* Fujitsu HPC-ACE, reserved */
#define SPARCV9_IMA (1 << 13) /* reserved */
#define SPARCV9_VIS4 (1 << 14) /* reserved */

/*
 * OPENSSL_sparcv9cap_P[1] is copy of Compatibility Feature Register,
 * %asr26, SPARC-T4 and later. There is no SPARCV9_CFR bit in
 * OPENSSL_sparcv9cap_P[0], as %cfr copy is sufficient...
 */
#define CFR_AES 0x00000001 /* Supports AES opcodes */
#define CFR_DES 0x00000002 /* Supports DES opcodes */
#define CFR_KASUMI 0x00000004 /* Supports KASUMI opcodes */
#define CFR_CAMELLIA 0x00000008 /* Supports CAMELLIA opcodes */
#define CFR_MD5 0x00000010 /* Supports MD5 opcodes */
#define CFR_SHA1 0x00000020 /* Supports SHA1 opcodes */
#define CFR_SHA256 0x00000040 /* Supports SHA256 opcodes */
#define CFR_SHA512 0x00000080 /* Supports SHA512 opcodes */
#define CFR_MPMUL 0x00000100 /* Supports MPMUL opcodes */
#define CFR_MONTMUL 0x00000200 /* Supports MONTMUL opcodes */
#define CFR_MONTSQR 0x00000400 /* Supports MONTSQR opcodes */
#define CFR_CRC32C 0x00000800 /* Supports CRC32C opcodes */
#define CFR_XMPMUL 0x00001000 /* Supports XMPMUL opcodes */
#define CFR_XMONTMUL 0x00002000 /* Supports XMONTMUL opcodes */
#define CFR_XMONTSQR 0x00004000 /* Supports XMONTSQR opcodes */

#if defined(OPENSSL_PIC) && !defined(__PIC__)
#define __PIC__
#endif

#if defined(__SUNPRO_C) && defined(__sparcv9) && !defined(__arch64__)
#define __arch64__
#endif

/* clang-format off */
# define SPARC_PIC_THUNK(reg)    \
        .align  32;             \
.Lpic_thunk:                    \
        jmp     %o7 + 8;        \
         add    %o7, reg, reg;

# define SPARC_PIC_THUNK_CALL(reg)                       \
        sethi   %hi(_GLOBAL_OFFSET_TABLE_-4), reg;      \
        call    .Lpic_thunk;                            \
         or     reg, %lo(_GLOBAL_OFFSET_TABLE_+4), reg;

# if 1
#  define SPARC_SETUP_GOT_REG(reg)       SPARC_PIC_THUNK_CALL(reg)
# else
#  define SPARC_SETUP_GOT_REG(reg)       \
        sethi   %hi(_GLOBAL_OFFSET_TABLE_-4), reg;      \
        call    .+8;                                    \
        or      reg,%lo(_GLOBAL_OFFSET_TABLE_+4), reg;  \
        add     %o7, reg, reg
# endif
/* clang-format on */

#if defined(__arch64__)

#define SPARC_LOAD_ADDRESS(SYM, reg) \
    setx SYM, % o7, reg;
#define LDPTR ldx
#define SIZE_T_CC % xcc
#define STACK_FRAME 192
#define STACK_BIAS 2047
#define STACK_7thARG (STACK_BIAS + 176)

#else

#define SPARC_LOAD_ADDRESS(SYM, reg) \
    set SYM, reg;
#define LDPTR ld
#define SIZE_T_CC % icc
#define STACK_FRAME 112
#define STACK_BIAS 0
#define STACK_7thARG 92
#define SPARC_LOAD_ADDRESS_LEAF(SYM, reg, tmp) SPARC_LOAD_ADDRESS(SYM, reg)

#endif

/* clang-format off */
# ifdef __PIC__
#  undef SPARC_LOAD_ADDRESS
#  undef SPARC_LOAD_ADDRESS_LEAF
#  define SPARC_LOAD_ADDRESS(SYM, reg)   \
        SPARC_SETUP_GOT_REG(reg);       \
        sethi   %hi(SYM), %o7;          \
        or      %o7, %lo(SYM), %o7;     \
        LDPTR   [reg + %o7], reg;
# endif

# ifndef SPARC_LOAD_ADDRESS_LEAF
#  define SPARC_LOAD_ADDRESS_LEAF(SYM, reg, tmp) \
        mov     %o7, tmp;                       \
        SPARC_LOAD_ADDRESS(SYM, reg)            \
        mov     tmp, %o7;
# endif
/* clang-format on */

#ifndef __ASSEMBLER__
extern unsigned int OPENSSL_sparcv9cap_P[2];
#endif

#endif /* OSSL_CRYPTO_SPARC_ARCH_H */