From: Alistair Francis Date: Mon, 10 Feb 2020 18:36:21 +0000 (-0800) Subject: RISC-V: Support the 32-bit ABI implementation X-Git-Tag: glibc-2.33~534 X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=5b6113d62efabb123db433b14adddd4a5fb6b7ec;p=glibc.git RISC-V: Support the 32-bit ABI implementation This patch adds the ABI implementation for 32-bit RISC-V. It contains the Linux-specific and RISC-V architecture code. Reviewed-by: Maciej W. Rozycki --- diff --git a/sysdeps/riscv/bits/wordsize.h b/sysdeps/riscv/bits/wordsize.h index faccc71828..4929dcf873 100644 --- a/sysdeps/riscv/bits/wordsize.h +++ b/sysdeps/riscv/bits/wordsize.h @@ -22,8 +22,9 @@ # error unsupported ABI #endif -#if __riscv_xlen == 64 -# define __WORDSIZE_TIME64_COMPAT32 1 -#else -# error "rv32i-based targets are not supported" +#define __WORDSIZE_TIME64_COMPAT32 1 + +#if __WORDSIZE == 32 +# define __WORDSIZE32_SIZE_ULONG 0 +# define __WORDSIZE32_PTRDIFF_LONG 0 #endif diff --git a/sysdeps/riscv/nptl/bits/pthreadtypes-arch.h b/sysdeps/riscv/nptl/bits/pthreadtypes-arch.h index c3c72d6c10..8a602e864a 100644 --- a/sysdeps/riscv/nptl/bits/pthreadtypes-arch.h +++ b/sysdeps/riscv/nptl/bits/pthreadtypes-arch.h @@ -21,18 +21,22 @@ #include -#if __riscv_xlen == 64 -# define __SIZEOF_PTHREAD_ATTR_T 56 -# define __SIZEOF_PTHREAD_MUTEX_T 40 -# define __SIZEOF_PTHREAD_MUTEXATTR_T 4 -# define __SIZEOF_PTHREAD_COND_T 48 -# define __SIZEOF_PTHREAD_CONDATTR_T 4 -# define __SIZEOF_PTHREAD_RWLOCK_T 56 -# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 -# define __SIZEOF_PTHREAD_BARRIER_T 32 -# define __SIZEOF_PTHREAD_BARRIERATTR_T 4 +#define __SIZEOF_PTHREAD_MUTEXATTR_T 4 +#define __SIZEOF_PTHREAD_COND_T 48 +#define __SIZEOF_PTHREAD_CONDATTR_T 4 +#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 +#define __SIZEOF_PTHREAD_BARRIERATTR_T 4 + +#if __WORDSIZE == 64 +# define __SIZEOF_PTHREAD_ATTR_T 56 +# define __SIZEOF_PTHREAD_MUTEX_T 40 +# define __SIZEOF_PTHREAD_RWLOCK_T 56 +# define __SIZEOF_PTHREAD_BARRIER_T 32 #else -# error "rv32i-based systems are not supported" +# define __SIZEOF_PTHREAD_ATTR_T 32 +# define __SIZEOF_PTHREAD_MUTEX_T 32 +# define __SIZEOF_PTHREAD_RWLOCK_T 48 +# define __SIZEOF_PTHREAD_BARRIER_T 20 #endif #define __LOCK_ALIGNMENT diff --git a/sysdeps/riscv/nptl/bits/struct_rwlock.h b/sysdeps/riscv/nptl/bits/struct_rwlock.h index acfaa75e1b..dc467d42c7 100644 --- a/sysdeps/riscv/nptl/bits/struct_rwlock.h +++ b/sysdeps/riscv/nptl/bits/struct_rwlock.h @@ -15,7 +15,7 @@ You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see - . */ + . */ #ifndef _RWLOCK_INTERNAL_H #define _RWLOCK_INTERNAL_H @@ -32,14 +32,37 @@ struct __pthread_rwlock_arch_t unsigned int __writers_futex; unsigned int __pad3; unsigned int __pad4; +#if __WORDSIZE == 64 int __cur_writer; int __shared; unsigned long int __pad1; unsigned long int __pad2; unsigned int __flags; +#else +# if __BYTE_ORDER == __BIG_ENDIAN + unsigned char __pad1; + unsigned char __pad2; + unsigned char __shared; + unsigned char __flags; +# else + unsigned char __flags; + unsigned char __shared; + unsigned char __pad1; + unsigned char __pad2; +# endif + int __cur_writer; +#endif }; -#define __PTHREAD_RWLOCK_INITIALIZER(__flags) \ +#if __WORDSIZE == 64 +# define __PTHREAD_RWLOCK_INITIALIZER(__flags) \ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags +#elif __BYTE_ORDER == __BIG_ENDIAN +# define __PTHREAD_RWLOCK_INITIALIZER(__flags) \ + 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags, 0 +#else +# define __PTHREAD_RWLOCK_INITIALIZER(__flags) \ + 0, 0, 0, 0, 0, 0, __flags, 0, 0, 0, 0 +#endif #endif diff --git a/sysdeps/riscv/nptl/pthread-offsets.h b/sysdeps/riscv/nptl/pthread-offsets.h index 31f0587bec..d76c6cfb95 100644 --- a/sysdeps/riscv/nptl/pthread-offsets.h +++ b/sysdeps/riscv/nptl/pthread-offsets.h @@ -1,3 +1,16 @@ -#define __PTHREAD_MUTEX_KIND_OFFSET 16 +#if __WORDSIZE == 64 +# define __PTHREAD_MUTEX_KIND_OFFSET 16 +#else +# define __PTHREAD_MUTEX_KIND_OFFSET 12 +#endif -#define __PTHREAD_RWLOCK_FLAGS_OFFSET 48 + +#if __WORDSIZE == 64 +# define __PTHREAD_RWLOCK_FLAGS_OFFSET 48 +#else +# if __BYTE_ORDER == __BIG_ENDIAN +# define __PTHREAD_RWLOCK_FLAGS_OFFSET 27 +# else +# define __PTHREAD_RWLOCK_FLAGS_OFFSET 24 +# endif +#endif diff --git a/sysdeps/riscv/sfp-machine.h b/sysdeps/riscv/sfp-machine.h index 08a84fd701..bbeb9b37cf 100644 --- a/sysdeps/riscv/sfp-machine.h +++ b/sysdeps/riscv/sfp-machine.h @@ -22,7 +22,32 @@ #if __riscv_xlen == 32 -# error "rv32i-based targets are not supported" +# define _FP_W_TYPE_SIZE 32 +# define _FP_W_TYPE unsigned long +# define _FP_WS_TYPE signed long +# define _FP_I_TYPE long + +# define _FP_MUL_MEAT_S(R, X, Y) \ + _FP_MUL_MEAT_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm) +# define _FP_MUL_MEAT_D(R, X, Y) \ + _FP_MUL_MEAT_2_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm) +# define _FP_MUL_MEAT_Q(R, X, Y) \ + _FP_MUL_MEAT_4_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm) + +# define _FP_MUL_MEAT_DW_S(R, X, Y) \ + _FP_MUL_MEAT_DW_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm) +# define _FP_MUL_MEAT_DW_D(R, X, Y) \ + _FP_MUL_MEAT_DW_2_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm) +# define _FP_MUL_MEAT_DW_Q(R, X, Y) \ + _FP_MUL_MEAT_DW_4_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm) + +# define _FP_DIV_MEAT_S(R, X, Y) _FP_DIV_MEAT_1_udiv_norm (S, R, X, Y) +# define _FP_DIV_MEAT_D(R, X, Y) _FP_DIV_MEAT_2_udiv (D, R, X, Y) +# define _FP_DIV_MEAT_Q(R, X, Y) _FP_DIV_MEAT_4_udiv (Q, R, X, Y) + +# define _FP_NANFRAC_S _FP_QNANBIT_S +# define _FP_NANFRAC_D _FP_QNANBIT_D, 0 +# define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0 #else diff --git a/sysdeps/riscv/sys/asm.h b/sysdeps/riscv/sys/asm.h index bd2de17e17..8292ec77b0 100644 --- a/sysdeps/riscv/sys/asm.h +++ b/sysdeps/riscv/sys/asm.h @@ -22,11 +22,14 @@ /* Macros to handle different pointer/register sizes for 32/64-bit code. */ #if __riscv_xlen == 64 # define PTRLOG 3 -# define SZREG 8 +# define SZREG 8 # define REG_S sd # define REG_L ld #elif __riscv_xlen == 32 -# error "rv32i-based targets are not supported" +# define PTRLOG 2 +# define SZREG 4 +# define REG_S sw +# define REG_L lw #else # error __riscv_xlen must equal 32 or 64 #endif diff --git a/sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h b/sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h new file mode 100644 index 0000000000..234b979a8c --- /dev/null +++ b/sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h @@ -0,0 +1,55 @@ +/* The jump buffer constants for RISC-V. + Copyright (C) 2020 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + The GNU C 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 2.1 of the License, or (at your option) any later version. + + The GNU C 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 the GNU C Library. If not, see + . */ + +/* Produced by this program: + + #include + #include + #include + #include + + int main (int argc, char **argv) + { + printf ("#define JMP_BUF_SIZE %d\n", sizeof (jmp_buf)); + printf ("#define JMP_BUF_ALIGN %d\n", __alignof__ (jmp_buf)); + printf ("#define SIGJMP_BUF_SIZE %d\n", sizeof (sigjmp_buf)); + printf ("#define SIGJMP_BUF_ALIGN %d\n", __alignof__ (sigjmp_buf)); + printf ("#define MASK_WAS_SAVED_OFFSET %d\n", + offsetof (struct __jmp_buf_tag, __mask_was_saved)); + printf ("#define SAVED_MASK_OFFSET %d\n", + offsetof (struct __jmp_buf_tag, __saved_mask)); + } */ + +#if defined __riscv_float_abi_soft +# define JMP_BUF_SIZE 188 +# define JMP_BUF_ALIGN 4 +# define SIGJMP_BUF_SIZE 188 +# define SIGJMP_BUF_ALIGN 4 +# define MASK_WAS_SAVED_OFFSET 56 +# define SAVED_MASK_OFFSET 60 +#elif defined __riscv_float_abi_double +# define JMP_BUF_SIZE 288 +# define JMP_BUF_ALIGN 8 +# define SIGJMP_BUF_SIZE 288 +# define SIGJMP_BUF_ALIGN 8 +# define MASK_WAS_SAVED_OFFSET 152 +# define SAVED_MASK_OFFSET 156 +#else +# error "Unknown RISC-V floating-point ABI" +#endif