new file mode 100644
@@ -0,0 +1,58 @@
+/* Copyright (C) 1996, 1997, 2000, 2002-2004, 2017
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+#include <sys/asm.h>
+
+ENTRY (__longjmp)
+ REG_L ra, 0*SZREG(a0)
+ REG_L s0, 1*SZREG(a0)
+ REG_L s1, 2*SZREG(a0)
+ REG_L s2, 3*SZREG(a0)
+ REG_L s3, 4*SZREG(a0)
+ REG_L s4, 5*SZREG(a0)
+ REG_L s5, 6*SZREG(a0)
+ REG_L s6, 7*SZREG(a0)
+ REG_L s7, 8*SZREG(a0)
+ REG_L s8, 9*SZREG(a0)
+ REG_L s9, 10*SZREG(a0)
+ REG_L s10,11*SZREG(a0)
+ REG_L s11,12*SZREG(a0)
+ REG_L sp, 13*SZREG(a0)
+
+#ifndef __riscv_float_abi_soft
+ FREG_L fs0, 14*SZREG+ 0*SZFREG(a0)
+ FREG_L fs1, 14*SZREG+ 1*SZFREG(a0)
+ FREG_L fs2, 14*SZREG+ 2*SZFREG(a0)
+ FREG_L fs3, 14*SZREG+ 3*SZFREG(a0)
+ FREG_L fs4, 14*SZREG+ 4*SZFREG(a0)
+ FREG_L fs5, 14*SZREG+ 5*SZFREG(a0)
+ FREG_L fs6, 14*SZREG+ 6*SZFREG(a0)
+ FREG_L fs7, 14*SZREG+ 7*SZFREG(a0)
+ FREG_L fs8, 14*SZREG+ 8*SZFREG(a0)
+ FREG_L fs9, 14*SZREG+ 9*SZFREG(a0)
+ FREG_L fs10,14*SZREG+10*SZFREG(a0)
+ FREG_L fs11,14*SZREG+11*SZFREG(a0)
+#endif
+
+ seqz a0, a1
+ add a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1
+ ret
+
+END(__longjmp)
new file mode 100644
@@ -0,0 +1,5 @@
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
new file mode 100644
@@ -0,0 +1,38 @@
+/* Define the machine-dependent type `jmp_buf'. RISC-V version.
+ Copyright (C) 2011-2017 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _RISCV_BITS_SETJMP_H
+#define _RISCV_BITS_SETJMP_H
+
+typedef struct __jmp_buf_internal_tag
+ {
+ /* Program counter. */
+ long __pc;
+ /* Callee-saved registers. */
+ long __regs[12];
+ /* Stack pointer. */
+ long __sp;
+
+ /* Callee-saved floating point registers.
+ Note that there are an even number of preceding words in this struct,
+ so no padding will be inserted before __fpregs, even for RV32. */
+ double __fpregs[12];
+ } __jmp_buf[1];
+
+#endif /* _RISCV_BITS_SETJMP_H */
new file mode 100644
@@ -0,0 +1,31 @@
+/* Copyright (C) 2002, 2003, 2017 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#if __riscv_xlen == (__SIZEOF_POINTER__ * 8)
+# define __WORDSIZE __riscv_xlen
+#else
+# error unsupported ABI
+#endif
+
+#if __riscv_xlen == 64
+# define __WORDSIZE_TIME64_COMPAT32 1
+#else
+# define __WORDSIZE_TIME64_COMPAT32 0
+# define __WORDSIZE32_SIZE_ULONG 0
+# define __WORDSIZE32_PTRDIFF_LONG 0
+#endif
new file mode 100644
@@ -0,0 +1 @@
+/* _setjmp is implemented in setjmp.S */
new file mode 100644
@@ -0,0 +1 @@
+/* setjmp is implemented in setjmp.S */
new file mode 100644
@@ -0,0 +1,44 @@
+#include <sysdep.h>
+#include <sys/asm.h>
+
+/* Assembler veneer called from the PLT header code for lazy loading.
+ The PLT header passes its own args in t0-t2. */
+
+#define FRAME_SIZE (-((-10 * SZREG) & ALMASK))
+
+ENTRY(_dl_runtime_resolve)
+ # Save arguments to stack.
+ addi sp, sp, -FRAME_SIZE
+ REG_S ra, 9*SZREG(sp)
+ REG_S a0, 1*SZREG(sp)
+ REG_S a1, 2*SZREG(sp)
+ REG_S a2, 3*SZREG(sp)
+ REG_S a3, 4*SZREG(sp)
+ REG_S a4, 5*SZREG(sp)
+ REG_S a5, 6*SZREG(sp)
+ REG_S a6, 7*SZREG(sp)
+ REG_S a7, 8*SZREG(sp)
+
+ # Update .got.plt and obtain runtime address of callee.
+ slli a1, t1, 1
+ mv a0, t0 # link map
+ add a1, a1, t1 # reloc offset (== thrice the .got.plt offset)
+ la a2, _dl_fixup
+ jalr a2
+ mv t1, a0
+
+ # Restore arguments from stack.
+ REG_L ra, 9*SZREG(sp)
+ REG_L a0, 1*SZREG(sp)
+ REG_L a1, 2*SZREG(sp)
+ REG_L a2, 3*SZREG(sp)
+ REG_L a3, 4*SZREG(sp)
+ REG_L a4, 5*SZREG(sp)
+ REG_L a5, 6*SZREG(sp)
+ REG_L a6, 7*SZREG(sp)
+ REG_L a7, 8*SZREG(sp)
+ addi sp, sp, FRAME_SIZE
+
+ # Invoke the callee.
+ jr t1
+END(_dl_runtime_resolve)
new file mode 100644
@@ -0,0 +1,22 @@
+/* Definition of object in frame unwind info. RISC-V version.
+ Copyright (C) 2001, 2017 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define FIRST_PSEUDO_REGISTER 66
+
+#include <sysdeps/generic/gccframe.h>
new file mode 100644
@@ -0,0 +1,46 @@
+/* Copyright (C) 2003, 2005, 2006, 2017 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+#include <sysdep.h>
+
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
+ ((void *) (address) < (void *) demangle ((jmpbuf)[0].__sp))
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+static inline uintptr_t __attribute__ ((unused))
+_jmpbuf_sp (__jmp_buf regs)
+{
+ uintptr_t sp = regs[0].__sp;
+#ifdef PTR_DEMANGLE
+ PTR_DEMANGLE (sp);
+#endif
+ return sp;
+}
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj))
+
+/* We use the normal longjmp for unwinding. */
+#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
new file mode 100644
@@ -0,0 +1,34 @@
+/* RISC-V definitions for profiling support.
+ Copyright (C) 1996-2017 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
+ <http://www.gnu.org/licenses/>. */
+
+/* Accept 'frompc' address as argument from the function that calls
+ _mcount for profiling. Use __builtin_return_address (0)
+ for the 'selfpc' address. */
+
+#include <sysdep.h>
+
+static void mcount_internal (u_long frompc, u_long selfpc);
+
+#define _MCOUNT_DECL(frompc, selfpc) \
+static inline void mcount_internal (u_long frompc, u_long selfpc)
+
+#define MCOUNT \
+void _mcount (void *frompc) \
+{ \
+ mcount_internal ((u_long) frompc, (u_long) RETURN_ADDRESS (0)); \
+}
new file mode 100644
@@ -0,0 +1,21 @@
+/* Copyright (C) 2000, 2017 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define GETSP() ({ register uintptr_t stack_ptr asm ("sp"); stack_ptr; })
+
+#include <sysdeps/generic/memusage.h>
new file mode 100644
@@ -0,0 +1,129 @@
+/* Copyright (C) 2003-2006, 2017 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+#include <sysdeps/generic/sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+#include <sys/asm.h>
+
+/* Gas will put the initial save of $gp into the CIE, because it appears to
+ happen before any instructions. So we use cfi_same_value instead of
+ cfi_restore. */
+
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args) \
+ .align 2; \
+ L(pseudo_start): \
+ 99: j __syscall_error; \
+ ENTRY (name) \
+ SINGLE_THREAD_P(t0); \
+ bnez t0, L(pseudo_cancel); \
+ .type __##syscall_name##_nocancel, @function; \
+ .globl __##syscall_name##_nocancel; \
+ __##syscall_name##_nocancel: \
+ li a7, SYS_ify(syscall_name); \
+ scall; \
+ bltz a0, 99b; \
+ ret; \
+ .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
+ L(pseudo_cancel): \
+ addi sp, sp, -STKSPACE; \
+ REG_S ra, STKOFF_RA(sp); \
+ cfi_rel_offset (ra, STKOFF_RA); \
+ PUSHARGS_##args; /* save syscall args */ \
+ CENABLE; \
+ REG_S a0, STKOFF_SVMSK(sp); /* save mask */ \
+ POPARGS_##args; /* restore syscall args */ \
+ li a7, SYS_ify (syscall_name); \
+ scall; \
+ REG_S a0, STKOFF_A0(sp); /* save syscall result */ \
+ REG_L a0, STKOFF_SVMSK(sp); /* pass mask as arg1 */ \
+ CDISABLE; \
+ REG_L ra, STKOFF_RA(sp); /* restore return address */ \
+ REG_L a0, STKOFF_A0(sp); /* restore syscall result */ \
+ addi sp, sp, STKSPACE; \
+ bltz a0, 99b; \
+ L(pseudo_end):
+
+
+# define PUSHARGS_0 /* nothing to do */
+# define PUSHARGS_1 PUSHARGS_0 REG_S a0, STKOFF_A0(sp); cfi_rel_offset (a0, STKOFF_A0);
+# define PUSHARGS_2 PUSHARGS_1 REG_S a1, STKOFF_A1(sp); cfi_rel_offset (a1, STKOFF_A1);
+# define PUSHARGS_3 PUSHARGS_2 REG_S a2, STKOFF_A2(sp); cfi_rel_offset (a2, STKOFF_A2);
+# define PUSHARGS_4 PUSHARGS_3 REG_S a3, STKOFF_A3(sp); cfi_rel_offset (a3, STKOFF_A3);
+# define PUSHARGS_5 PUSHARGS_4 REG_S a4, STKOFF_A4(sp); cfi_rel_offset (a4, STKOFF_A4);
+# define PUSHARGS_6 PUSHARGS_5 REG_S a5, STKOFF_A5(sp); cfi_rel_offset (a5, STKOFF_A5);
+
+# define POPARGS_0 /* nothing to do */
+# define POPARGS_1 POPARGS_0 REG_L a0, STKOFF_A0(sp);
+# define POPARGS_2 POPARGS_1 REG_L a1, STKOFF_A1(sp);
+# define POPARGS_3 POPARGS_2 REG_L a2, STKOFF_A2(sp);
+# define POPARGS_4 POPARGS_3 REG_L a3, STKOFF_A3(sp);
+# define POPARGS_5 POPARGS_4 REG_L a4, STKOFF_A4(sp);
+# define POPARGS_6 POPARGS_5 REG_L a5, STKOFF_A5(sp);
+
+/* Avoid D$ misses by keeping less-used arguments further down stack. */
+# define STKOFF_A5 0
+# define STKOFF_A4 (STKOFF_A5 + SZREG)
+# define STKOFF_A3 (STKOFF_A4 + SZREG)
+# define STKOFF_A2 (STKOFF_A3 + SZREG)
+# define STKOFF_A1 (STKOFF_A2 + SZREG)
+# define STKOFF_A0 (STKOFF_A1 + SZREG)
+# define STKOFF_SVMSK (STKOFF_A0 + SZREG)
+# define STKOFF_RA (STKOFF_SVMSK + SZREG)
+# define STKSPACE (STKOFF_RA + SZREG)
+
+# if IS_IN (libpthread)
+# define CENABLE call __pthread_enable_asynccancel
+# define CDISABLE call __pthread_disable_asynccancel
+# elif IS_IN (librt)
+# define CENABLE call __librt_enable_asynccancel
+# define CDISABLE call __librt_disable_asynccancel
+# else
+# define CENABLE call __libc_enable_asynccancel
+# define CDISABLE call __libc_disable_asynccancel
+# endif
+
+# ifndef __ASSEMBLER__
+# define SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.multiple_threads) \
+ == 0, 1)
+# else
+# include "tcb-offsets.h"
+# define SINGLE_THREAD_P(reg) \
+ lw reg, MULTIPLE_THREADS_OFFSET(tp)
+#endif
+
+#elif !defined __ASSEMBLER__
+
+# define SINGLE_THREAD_P 1
+# define NO_CANCELLATION 1
+
+#endif
+
+#ifndef __ASSEMBLER__
+# define RTLD_SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.multiple_threads) == 0, 1)
+#endif
new file mode 100644
@@ -0,0 +1,75 @@
+/* Copyright (C) 1996, 1997, 2000, 2002, 2003, 2004
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+#include <sys/asm.h>
+
+ENTRY (_setjmp)
+ li a1, 0
+ j __sigsetjmp
+END (_setjmp)
+ENTRY (setjmp)
+ li a1, 1
+ /* Fallthrough */
+END (setjmp)
+ENTRY (__sigsetjmp)
+ REG_S ra, 0*SZREG(a0)
+ REG_S s0, 1*SZREG(a0)
+ REG_S s1, 2*SZREG(a0)
+ REG_S s2, 3*SZREG(a0)
+ REG_S s3, 4*SZREG(a0)
+ REG_S s4, 5*SZREG(a0)
+ REG_S s5, 6*SZREG(a0)
+ REG_S s6, 7*SZREG(a0)
+ REG_S s7, 8*SZREG(a0)
+ REG_S s8, 9*SZREG(a0)
+ REG_S s9, 10*SZREG(a0)
+ REG_S s10,11*SZREG(a0)
+ REG_S s11,12*SZREG(a0)
+ REG_S sp, 13*SZREG(a0)
+
+#ifndef __riscv_float_abi_soft
+ FREG_S fs0, 14*SZREG+ 0*SZFREG(a0)
+ FREG_S fs1, 14*SZREG+ 1*SZFREG(a0)
+ FREG_S fs2, 14*SZREG+ 2*SZFREG(a0)
+ FREG_S fs3, 14*SZREG+ 3*SZFREG(a0)
+ FREG_S fs4, 14*SZREG+ 4*SZFREG(a0)
+ FREG_S fs5, 14*SZREG+ 5*SZFREG(a0)
+ FREG_S fs6, 14*SZREG+ 6*SZFREG(a0)
+ FREG_S fs7, 14*SZREG+ 7*SZFREG(a0)
+ FREG_S fs8, 14*SZREG+ 8*SZFREG(a0)
+ FREG_S fs9, 14*SZREG+ 9*SZFREG(a0)
+ FREG_S fs10,14*SZREG+10*SZFREG(a0)
+ FREG_S fs11,14*SZREG+11*SZFREG(a0)
+#endif
+
+#if !IS_IN (libc) && IS_IN (rtld)
+ /* In ld.so we never save the signal mask. */
+ li a0, 0
+ ret
+#else
+ /* Make a tail call to __sigjmp_save; it takes the same args. */
+ j __sigjmp_save
+#endif
+
+
+END(__sigsetjmp)
+
+hidden_def (__sigsetjmp)
+weak_alias(_setjmp, __GI__setjmp)
new file mode 100644
@@ -0,0 +1,79 @@
+/* copyright (c) 1997, 1998, 2002, 2003-2005, 2017
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ralf Baechle <ralf@gnu.org>.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#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
+# else
+# error unsupported FLEN
+# endif
+#endif
+
+/*
+ * LEAF - declare leaf routine
+ */
+#define LEAF(symbol) \
+ .globl symbol; \
+ .align 2; \
+ .type symbol,@function; \
+symbol: \
+ cfi_startproc;
+
+/*
+ * END - mark end of function
+ */
+#undef END
+#define END(function) \
+ cfi_endproc; \
+ .size function,.-function
+
+/*
+ * Stack alignment
+ */
+#define ALMASK ~15
+
+#endif /* sys/asm.h */