diff options
Diffstat (limited to 'newlib/libc/machine/riscv/sys/asm.h')
| -rw-r--r-- | newlib/libc/machine/riscv/sys/asm.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/newlib/libc/machine/riscv/sys/asm.h b/newlib/libc/machine/riscv/sys/asm.h new file mode 100644 index 000000000..5deec6bcd --- /dev/null +++ b/newlib/libc/machine/riscv/sys/asm.h @@ -0,0 +1,50 @@ +/* Copyright (c) 2017 SiFive Inc. All rights reserved. + + This copyrighted material is made available to anyone wishing to use, + modify, copy, or redistribute it subject to the terms and conditions + of the BSD License. This program is distributed in the hope that + it will be useful, but WITHOUT ANY WARRANTY expressed or implied, + including the implied warranties of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. A copy of this license is available at + http://www.opensource.org/licenses. +*/ + +#ifndef _SYS_ASM_H +#define _SYS_ASM_H + +/* + * Macros to handle different pointer/register sizes for 32/64-bit code + */ +#if __riscv_xlen == 64 +# define PTRLOG 3 +# define SZREG 8 +# define REG_S sd +# define REG_L ld +#elif __riscv_xlen == 32 +# define PTRLOG 2 +# define SZREG 4 +# define REG_S sw +# define REG_L lw +#else +# error __riscv_xlen must equal 32 or 64 +#endif + +#ifndef __riscv_float_abi_soft +/* For ABI uniformity, reserve 8 bytes for floats, even if double-precision + floating-point is not supported in hardware. */ +# define SZFREG 8 +# ifdef __riscv_float_abi_single +# define FREG_L flw +# define FREG_S fsw +# elif defined(__riscv_float_abi_double) +# define FREG_L fld +# define FREG_S fsd +# elif defined(__riscv_float_abi_quad) +# define FREG_L flq +# define FREG_S fsq +# else +# error unsupported FLEN +# endif +#endif + +#endif /* sys/asm.h */ |