diff options
Diffstat (limited to 'runtime/riscV')
| -rw-r--r-- | runtime/riscV/sysdeps.h | 63 | ||||
| -rw-r--r-- | runtime/riscV/vararg.S | 90 |
2 files changed, 153 insertions, 0 deletions
diff --git a/runtime/riscV/sysdeps.h b/runtime/riscV/sysdeps.h new file mode 100644 index 00000000..b95ca1b1 --- /dev/null +++ b/runtime/riscV/sysdeps.h @@ -0,0 +1,63 @@ +// ***************************************************************** +// +// The Compcert verified compiler +// +// Xavier Leroy, INRIA Paris-Rocquencourt +// +// Copyright (c) 2013 Institut National de Recherche en Informatique et +// en Automatique. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// * Neither the name of the <organization> nor the +// names of its contributors may be used to endorse or promote products +// derived from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT +// HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +// ********************************************************************* + +// System dependencies + +#define FUNCTION(f) \ + .text; \ + .balign 16; \ + .globl f; \ +f: + +#define ENDFUNCTION(f) \ + .type f, @function; .size f, . - f + +#if defined(MODEL_64) + +#define WORDSIZE 8 +#define lptr ld +#define sptr sd + +#elif defined(MODEL_32) + +#define WORDSIZE 4 +#define lptr lw +#define sptr sw + +#else + +#error "Wrong MODEL" + +#endif + diff --git a/runtime/riscV/vararg.S b/runtime/riscV/vararg.S new file mode 100644 index 00000000..a9481077 --- /dev/null +++ b/runtime/riscV/vararg.S @@ -0,0 +1,90 @@ +// ***************************************************************** +// +// The Compcert verified compiler +// +// Xavier Leroy, INRIA Paris-Rocquencourt +// Prashanth Mundkur, SRI International +// +// Copyright (c) 2013 Institut National de Recherche en Informatique et +// en Automatique. +// +// The contributions by Prashanth Mundkur are reused and adapted +// under the terms of a Contributor License Agreement between +// SRI International and INRIA. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// * Neither the name of the <organization> nor the +// names of its contributors may be used to endorse or promote products +// derived from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT +// HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +// ********************************************************************* + +// Helper functions for variadic functions <stdarg.h>. RISC-V version. + +#include "sysdeps.h" + +// typedef void * va_list; +// unsigned int __compcert_va_int32(va_list * ap); +// unsigned long long __compcert_va_int64(va_list * ap); +// double __compcert_va_float64(va_list * ap); + +FUNCTION(__compcert_va_int32) + # a0 = ap parameter + lptr t5, 0(a0) # t5 = pointer to next argument + addi t5, t5, WORDSIZE # advance ap + sptr t5, 0(a0) # update ap + lw a0, -WORDSIZE(t5) # load it and return it in a0 + jr ra +ENDFUNCTION(__compcert_va_int32) + +FUNCTION(__compcert_va_int64) + # a0 = ap parameter + lptr t5, 0(a0) # t5 = pointer to next argument + addi t5, t5, 15 # 8-align and advance by 8 + and t5, t5, -8 + sptr t5, 0(a0) # update ap +#ifdef MODEL_64 + ld a0, -8(t5) # return it in a0 +#else + lw a0, -8(t5) # return it in [a0,a1] + lw a1, -4(t5) +#endif + jr ra +ENDFUNCTION(__compcert_va_int64) + +FUNCTION(__compcert_va_float64) + # a0 = ap parameter + lptr t5, 0(a0) # t5 = pointer to next argument + addi t5, t5, 15 # 8-align and advance by 8 + and t5, t5, -8 + sw t5, 0(a0) # update ap + fld fa0, -8(t5) # return it in fa0 + jr ra +ENDFUNCTION(__compcert_va_float64) + +// Right now we pass structs by reference. This is not ABI conformant. +FUNCTION(__compcert_va_composite) +#ifdef MODEL_64 + j __compcert_va_int64 +#else + j __compcert_va_int32 +#endif +ENDFUNCTION(__compcert_va_composite) |