arm64.h

#ifndef ARM64
#define ARM64

/*
 *  TccGen - The Tiny C Compiler backend
 *
 *  Copyright (c) 2001-2004 Fabrice Bellard
 *            (c) 2024 Rochus Keller
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* from arm64_gen.c */

// Number of registers available to allocator:
#define NB_REGS 28 // x0-x18, x30, v0-v7

#define TREG_R(x) (x) // x = 0..18
#define TREG_R30  19
#define TREG_F(x) (x + 20) // x = 0..7

// Register classes sorted from more general to more precise:
#define RC_INT (1 << 0)
#define RC_FLOAT (1 << 1)
#define RC_R(x) (1 << (2 + (x))) // x = 0..18
#define RC_R30  (1 << 21)
#define RC_F(x) (1 << (22 + (x))) // x = 0..7

#define RC_IRET (RC_R(0)) // int return register class
#define RC_FRET (RC_F(0)) // float return register class

#define REG_IRET (TREG_R(0)) // int return register number
#define REG_FRET (TREG_F(0)) // float return register number

#define PTR_SIZE 8

#define LDOUBLE_SIZE 16
#define LDOUBLE_ALIGN 16

#define MAX_ALIGN 16

#define CHAR_IS_UNSIGNED

/* from arm64_link.c */

#define EM_TCC_TARGET EM_AARCH64

#define R_DATA_32  R_AARCH64_ABS32
#define R_DATA_PTR R_AARCH64_ABS64
#define R_JMP_SLOT R_AARCH64_JUMP_SLOT
#define R_GLOB_DAT R_AARCH64_GLOB_DAT
#define R_COPY     R_AARCH64_COPY
#define R_RELATIVE R_AARCH64_RELATIVE

#define R_NUM      R_AARCH64_NUM

#define ELF_START_ADDR 0x00400000
#define ELF_PAGE_SIZE 0x1000

#define PCRELATIVE_DLLPLT 1
#define RELOCATE_DLLPLT 1


#endif // ARM64