mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
Add full softfloat and hardfloat support for RISC-V.
Hardfloat is now default (use riscv64sf as TARGET_ARCH for softfloat). Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D8529
This commit is contained in:
Ruslan Bukin
parent
33299e3d96
commit
7804dd5212
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=308731
2
Makefile
2
Makefile
@ -239,7 +239,7 @@ _MAKE+= MK_META_MODE=no
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_TARGET_ARCH= ${TARGET:S/pc98/i386/:S/arm64/aarch64/}
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.elif !defined(TARGET) && defined(TARGET_ARCH) && \
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${TARGET_ARCH} != ${MACHINE_ARCH}
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_TARGET= ${TARGET_ARCH:C/mips(n32|64)?(el)?(hf)?/mips/:C/arm(v6)?(eb)?/arm/:C/aarch64/arm64/:C/powerpc64/powerpc/:C/powerpcspe/powerpc/:C/riscv64/riscv/}
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_TARGET= ${TARGET_ARCH:C/mips(n32|64)?(el)?(hf)?/mips/:C/arm(v6)?(eb)?/arm/:C/aarch64/arm64/:C/powerpc64/powerpc/:C/powerpcspe/powerpc/:C/riscv64(sf)?/riscv/}
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.endif
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.if defined(TARGET) && !defined(_TARGET)
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_TARGET=${TARGET}
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@ -364,6 +364,7 @@ KNOWN_ARCHES?= aarch64/arm64 \
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powerpc64/powerpc \
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powerpcspe/powerpc \
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riscv64/riscv \
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riscv64sf/riscv \
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sparc64
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.if ${TARGET} == ${TARGET_ARCH}
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@ -4,7 +4,7 @@
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# MACHINE_CPUARCH, but there's no easy way to export make functions...
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.if defined(TARGET_ARCH)
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TARGET_CPUARCH=${TARGET_ARCH:C/mips(n32|64)?(el)?(hf)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc(64|spe)/powerpc/}
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TARGET_CPUARCH=${TARGET_ARCH:C/mips(n32|64)?(el)?(hf)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc(64|spe)/powerpc/:C/riscv64(sf)?/riscv64/}
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.else
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TARGET_CPUARCH=${MACHINE_CPUARCH}
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.endif
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@ -111,7 +111,8 @@ NOASM=
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.include "${LIBC_SRCTOP}/xdr/Makefile.inc"
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.if (${LIBC_ARCH} == "arm" && \
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(${MACHINE_ARCH:Marmv6*} == "" || (defined(CPUTYPE) && ${CPUTYPE:M*soft*}))) || \
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(${LIBC_ARCH} == "mips" && ${MACHINE_ARCH:Mmips*hf} == "")
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(${LIBC_ARCH} == "mips" && ${MACHINE_ARCH:Mmips*hf} == "") || \
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(${LIBC_ARCH} == "riscv" && ${MACHINE_ARCH:Mriscv*sf} != "")
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.include "${LIBC_SRCTOP}/softfloat/Makefile.inc"
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.endif
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.if ${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "amd64"
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@ -3,6 +3,10 @@
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# Machine dependent definitions for the RISC-V architecture.
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#
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.if ${MACHINE_ARCH:Mriscv*sf} != ""
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CFLAGS+=-DSOFTFLOAT
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.endif
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# Long double is quad precision
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GDTOASRCS+=strtorQ.c
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MDSRCS+=machdep_ldisQ.c
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@ -35,4 +35,22 @@ FBSDprivate_1.0 {
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_set_tp;
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_end;
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__makecontext;
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/* softfloat */
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__addsf3;
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__adddf3;
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__subsf3;
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__subdf3;
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__mulsf3;
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__muldf3;
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__divsf3;
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__divdf3;
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__floatsisf;
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__floatsidf;
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__fixsfsi;
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__fixdfsi;
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__fixunssfsi;
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__fixunsdfsi;
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__extendsfdf2;
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__truncdfsf2;
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};
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@ -1,5 +1,5 @@
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/*-
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* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
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* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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@ -61,24 +61,21 @@ ENTRY(_setjmp)
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sd ra, (12 * 8)(a0)
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addi a0, a0, (13 * 8)
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#ifndef _STANDALONE
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#if 0
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/* RISCVTODO */
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/* Store the vfp registers */
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fsq fs0, (0 * 16)(a0)
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fsq fs1, (1 * 16)(a0)
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fsq fs2, (2 * 16)(a0)
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fsq fs3, (3 * 16)(a0)
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fsq fs4, (4 * 16)(a0)
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fsq fs5, (5 * 16)(a0)
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fsq fs6, (6 * 16)(a0)
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fsq fs7, (7 * 16)(a0)
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fsq fs8, (8 * 16)(a0)
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fsq fs9, (9 * 16)(a0)
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fsq fs10, (10 * 16)(a0)
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fsq fs11, (11 * 16)(a0)
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#if !defined(_STANDALONE) && !defined(SOFTFLOAT)
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/* Store the fpe registers */
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fsd fs0, (0 * 16)(a0)
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fsd fs1, (1 * 16)(a0)
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fsd fs2, (2 * 16)(a0)
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fsd fs3, (3 * 16)(a0)
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fsd fs4, (4 * 16)(a0)
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fsd fs5, (5 * 16)(a0)
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fsd fs6, (6 * 16)(a0)
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fsd fs7, (7 * 16)(a0)
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fsd fs8, (8 * 16)(a0)
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fsd fs9, (9 * 16)(a0)
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fsd fs10, (10 * 16)(a0)
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fsd fs11, (11 * 16)(a0)
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addi a0, a0, (12 * 16)
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#endif
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#endif
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/* Return value */
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@ -117,24 +114,21 @@ ENTRY(_longjmp)
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ld ra, (12 * 8)(a0)
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addi a0, a0, (13 * 8)
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#ifndef _STANDALONE
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#if 0
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/* RISCVTODO */
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/* Restore the vfp registers */
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flq fs0, (0 * 16)(a0)
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flq fs1, (1 * 16)(a0)
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flq fs2, (2 * 16)(a0)
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flq fs3, (3 * 16)(a0)
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flq fs4, (4 * 16)(a0)
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flq fs5, (5 * 16)(a0)
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flq fs6, (6 * 16)(a0)
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flq fs7, (7 * 16)(a0)
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flq fs8, (8 * 16)(a0)
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flq fs9, (9 * 16)(a0)
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flq fs10, (10 * 16)(a0)
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flq fs11, (11 * 16)(a0)
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#if !defined(_STANDALONE) && !defined(SOFTFLOAT)
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/* Restore the fpe registers */
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fld fs0, (0 * 16)(a0)
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fld fs1, (1 * 16)(a0)
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fld fs2, (2 * 16)(a0)
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fld fs3, (3 * 16)(a0)
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fld fs4, (4 * 16)(a0)
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fld fs5, (5 * 16)(a0)
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fld fs6, (6 * 16)(a0)
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fld fs7, (7 * 16)(a0)
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fld fs8, (8 * 16)(a0)
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fld fs9, (9 * 16)(a0)
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fld fs10, (10 * 16)(a0)
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fld fs11, (11 * 16)(a0)
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addi a0, a0, (12 * 16)
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#endif
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#endif
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/* Load the return value */
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@ -1,5 +1,5 @@
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/*-
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* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
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* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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@ -40,23 +40,24 @@ __FBSDID("$FreeBSD$");
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#include <fenv.h>
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#include <float.h>
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#ifdef SOFTFLOAT
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#include "softfloat-for-gcc.h"
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#include "milieu.h"
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#include "softfloat.h"
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#endif
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int
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__flt_rounds(void)
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{
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#if 0
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uint64_t fcsr;
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#endif
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int mode;
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uint64_t mode;
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#if 0
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__asm __volatile("csrr %0, fcsr" : "=r" (fcsr));
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mode = (fcsr & _ROUND_MASK);
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#ifdef SOFTFLOAT
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mode = __softfloat_float_rounding_mode;
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#else
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__asm __volatile("csrr %0, fcsr" : "=r" (mode));
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#endif
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/* RISCVTODO */
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mode = FE_TOWARDZERO; /* softfloat rounding mode */
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switch (mode) {
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switch (mode & _ROUND_MASK) {
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case FE_TOWARDZERO:
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return (0);
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case FE_TONEAREST:
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@ -1,5 +1,5 @@
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/*-
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* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
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* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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@ -75,21 +75,20 @@ ENTRY(setjmp)
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sd ra, (12 * 8)(a0)
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addi a0, a0, (13 * 8)
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#if 0
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/* RISCVTODO */
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/* Store the vfp registers */
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fsq fs0, (0 * 16)(a0)
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fsq fs1, (1 * 16)(a0)
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fsq fs2, (2 * 16)(a0)
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fsq fs3, (3 * 16)(a0)
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fsq fs4, (4 * 16)(a0)
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fsq fs5, (5 * 16)(a0)
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fsq fs6, (6 * 16)(a0)
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fsq fs7, (7 * 16)(a0)
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fsq fs8, (8 * 16)(a0)
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fsq fs9, (9 * 16)(a0)
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fsq fs10, (10 * 16)(a0)
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fsq fs11, (11 * 16)(a0)
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#ifndef SOFTFLOAT
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/* Store the fpe registers */
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fsd fs0, (0 * 16)(a0)
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fsd fs1, (1 * 16)(a0)
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fsd fs2, (2 * 16)(a0)
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fsd fs3, (3 * 16)(a0)
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fsd fs4, (4 * 16)(a0)
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fsd fs5, (5 * 16)(a0)
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fsd fs6, (6 * 16)(a0)
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fsd fs7, (7 * 16)(a0)
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fsd fs8, (8 * 16)(a0)
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fsd fs9, (9 * 16)(a0)
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fsd fs10, (10 * 16)(a0)
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fsd fs11, (11 * 16)(a0)
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addi a0, a0, (12 * 16)
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#endif
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@ -145,21 +144,20 @@ ENTRY(longjmp)
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ld ra, (12 * 8)(a0)
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addi a0, a0, (13 * 8)
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#if 0
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/* RISCVTODO */
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/* Restore the vfp registers */
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flq fs0, (0 * 16)(a0)
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flq fs1, (1 * 16)(a0)
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flq fs2, (2 * 16)(a0)
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flq fs3, (3 * 16)(a0)
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flq fs4, (4 * 16)(a0)
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flq fs5, (5 * 16)(a0)
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flq fs6, (6 * 16)(a0)
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flq fs7, (7 * 16)(a0)
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flq fs8, (8 * 16)(a0)
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flq fs9, (9 * 16)(a0)
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flq fs10, (10 * 16)(a0)
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flq fs11, (11 * 16)(a0)
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#ifndef SOFTFLOAT
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/* Restore the fpe registers */
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fld fs0, (0 * 16)(a0)
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fld fs1, (1 * 16)(a0)
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fld fs2, (2 * 16)(a0)
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fld fs3, (3 * 16)(a0)
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fld fs4, (4 * 16)(a0)
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fld fs5, (5 * 16)(a0)
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fld fs6, (6 * 16)(a0)
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fld fs7, (7 * 16)(a0)
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fld fs8, (8 * 16)(a0)
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fld fs9, (9 * 16)(a0)
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fld fs10, (10 * 16)(a0)
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fld fs11, (11 * 16)(a0)
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addi a0, a0, (12 * 16)
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#endif
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48
lib/libc/riscv/softfloat/milieu.h
Normal file
48
lib/libc/riscv/softfloat/milieu.h
Normal file
@ -0,0 +1,48 @@
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/* $FreeBSD$ */
|
||||
|
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/*
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===============================================================================
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This C header file is part of the SoftFloat IEC/IEEE Floating-point
|
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Arithmetic Package, Release 2a.
|
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|
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Written by John R. Hauser. This work was made possible in part by the
|
||||
International Computer Science Institute, located at Suite 600, 1947 Center
|
||||
Street, Berkeley, California 94704. Funding was partially provided by the
|
||||
National Science Foundation under grant MIP-9311980. The original version
|
||||
of this code was written as part of a project to build a fixed-point vector
|
||||
processor in collaboration with the University of California at Berkeley,
|
||||
overseen by Profs. Nelson Morgan and John Wawrzynek. More information
|
||||
is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
|
||||
arithmetic/SoftFloat.html'.
|
||||
|
||||
THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort
|
||||
has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
|
||||
TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO
|
||||
PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
|
||||
AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
|
||||
|
||||
Derivative works are acceptable, even for commercial purposes, so long as
|
||||
(1) they include prominent notice that the work is derivative, and (2) they
|
||||
include prominent notice akin to these four paragraphs for those parts of
|
||||
this code that are retained.
|
||||
|
||||
===============================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Include common integer types and flags.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
#include "riscv-gcc.h"
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Symbolic Boolean literals.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
enum {
|
||||
FALSE = 0,
|
||||
TRUE = 1
|
||||
};
|
||||
86
lib/libc/riscv/softfloat/riscv-gcc.h
Normal file
86
lib/libc/riscv/softfloat/riscv-gcc.h
Normal file
@ -0,0 +1,86 @@
|
||||
/* $NetBSD: arm-gcc.h,v 1.2 2001/02/21 18:09:25 bjh21 Exp $ */
|
||||
/* $FreeBSD$ */
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
One of the macros `BIGENDIAN' or `LITTLEENDIAN' must be defined.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
#define LITTLEENDIAN
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The macro `BITS64' can be defined to indicate that 64-bit integer types are
|
||||
supported by the compiler.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
#define BITS64
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Each of the following `typedef's defines the most convenient type that holds
|
||||
integers of at least as many bits as specified. For example, `uint8' should
|
||||
be the most convenient type that can hold unsigned integers of as many as
|
||||
8 bits. The `flag' type must be able to hold either a 0 or 1. For most
|
||||
implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
|
||||
to the same as `int'.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
typedef int flag;
|
||||
typedef int uint8;
|
||||
typedef int int8;
|
||||
typedef int uint16;
|
||||
typedef int int16;
|
||||
typedef unsigned int uint32;
|
||||
typedef signed int int32;
|
||||
#ifdef BITS64
|
||||
typedef unsigned long long int uint64;
|
||||
typedef signed long long int int64;
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Each of the following `typedef's defines a type that holds integers
|
||||
of _exactly_ the number of bits specified. For instance, for most
|
||||
implementation of C, `bits16' and `sbits16' should be `typedef'ed to
|
||||
`unsigned short int' and `signed short int' (or `short int'), respectively.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
typedef unsigned char bits8;
|
||||
typedef signed char sbits8;
|
||||
typedef unsigned short int bits16;
|
||||
typedef signed short int sbits16;
|
||||
typedef unsigned int bits32;
|
||||
typedef signed int sbits32;
|
||||
#ifdef BITS64
|
||||
typedef unsigned long long int bits64;
|
||||
typedef signed long long int sbits64;
|
||||
#endif
|
||||
|
||||
#ifdef BITS64
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The `LIT64' macro takes as its argument a textual integer literal and
|
||||
if necessary ``marks'' the literal as having a 64-bit integer type.
|
||||
For example, the GNU C Compiler (`gcc') requires that 64-bit literals be
|
||||
appended with the letters `LL' standing for `long long', which is `gcc's
|
||||
name for the 64-bit integer type. Some compilers may allow `LIT64' to be
|
||||
defined as the identity macro: `#define LIT64( a ) a'.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
#define LIT64( a ) a##LL
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The macro `INLINE' can be used before functions that should be inlined. If
|
||||
a compiler does not support explicit inlining, this macro should be defined
|
||||
to be `static'.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
#define INLINE static __inline
|
||||
|
||||
#if defined(SOFTFLOAT_FOR_GCC)
|
||||
#define FLOAT64_DEMANGLE(a) (a)
|
||||
#define FLOAT64_MANGLE(a) (a)
|
||||
#endif
|
||||
315
lib/libc/riscv/softfloat/softfloat.h
Normal file
315
lib/libc/riscv/softfloat/softfloat.h
Normal file
@ -0,0 +1,315 @@
|
||||
/* $NetBSD: softfloat.h,v 1.6 2002/05/12 13:12:46 bjh21 Exp $ */
|
||||
/* $FreeBSD$ */
|
||||
|
||||
/* This is a derivative work. */
|
||||
|
||||
/*
|
||||
===============================================================================
|
||||
|
||||
This C header file is part of the SoftFloat IEC/IEEE Floating-point
|
||||
Arithmetic Package, Release 2a.
|
||||
|
||||
Written by John R. Hauser. This work was made possible in part by the
|
||||
International Computer Science Institute, located at Suite 600, 1947 Center
|
||||
Street, Berkeley, California 94704. Funding was partially provided by the
|
||||
National Science Foundation under grant MIP-9311980. The original version
|
||||
of this code was written as part of a project to build a fixed-point vector
|
||||
processor in collaboration with the University of California at Berkeley,
|
||||
overseen by Profs. Nelson Morgan and John Wawrzynek. More information
|
||||
is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
|
||||
arithmetic/SoftFloat.html'.
|
||||
|
||||
THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort
|
||||
has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
|
||||
TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO
|
||||
PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
|
||||
AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
|
||||
|
||||
Derivative works are acceptable, even for commercial purposes, so long as
|
||||
(1) they include prominent notice that the work is derivative, and (2) they
|
||||
include prominent notice akin to these four paragraphs for those parts of
|
||||
this code that are retained.
|
||||
|
||||
===============================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The macro `FLOATX80' must be defined to enable the extended double-precision
|
||||
floating-point format `floatx80'. If this macro is not defined, the
|
||||
`floatx80' type will not be defined, and none of the functions that either
|
||||
input or output the `floatx80' type will be defined. The same applies to
|
||||
the `FLOAT128' macro and the quadruple-precision format `float128'.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/* #define FLOATX80 */
|
||||
/* #define FLOAT128 */
|
||||
|
||||
#include <fenv.h>
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point types.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
typedef unsigned int float32;
|
||||
typedef unsigned long long float64;
|
||||
#ifdef FLOATX80
|
||||
typedef struct {
|
||||
unsigned short high;
|
||||
unsigned long long low;
|
||||
} floatx80;
|
||||
#endif
|
||||
#ifdef FLOAT128
|
||||
typedef struct {
|
||||
unsigned long long high, low;
|
||||
} float128;
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point underflow tininess-detection mode.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
#ifndef SOFTFLOAT_FOR_GCC
|
||||
extern int float_detect_tininess;
|
||||
#endif
|
||||
enum {
|
||||
float_tininess_after_rounding = 0,
|
||||
float_tininess_before_rounding = 1
|
||||
};
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point rounding mode.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
extern int float_rounding_mode;
|
||||
enum {
|
||||
float_round_nearest_even = FE_TONEAREST,
|
||||
float_round_to_zero = FE_TOWARDZERO,
|
||||
float_round_down = FE_DOWNWARD,
|
||||
float_round_up = FE_UPWARD
|
||||
};
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point exception flags.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
extern int float_exception_flags;
|
||||
extern int float_exception_mask;
|
||||
enum {
|
||||
float_flag_inexact = FE_INEXACT,
|
||||
float_flag_underflow = FE_UNDERFLOW,
|
||||
float_flag_overflow = FE_OVERFLOW,
|
||||
float_flag_divbyzero = FE_DIVBYZERO,
|
||||
float_flag_invalid = FE_INVALID
|
||||
};
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Routine to raise any or all of the software IEC/IEEE floating-point
|
||||
exception flags.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
void float_raise( int );
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE integer-to-floating-point conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
float32 int32_to_float32( int );
|
||||
float64 int32_to_float64( int );
|
||||
#ifdef FLOATX80
|
||||
floatx80 int32_to_floatx80( int );
|
||||
#endif
|
||||
#ifdef FLOAT128
|
||||
float128 int32_to_float128( int );
|
||||
#endif
|
||||
#ifndef SOFTFLOAT_FOR_GCC /* __floatdi?f is in libgcc2.c */
|
||||
float32 int64_to_float32( long long );
|
||||
float64 int64_to_float64( long long );
|
||||
#ifdef FLOATX80
|
||||
floatx80 int64_to_floatx80( long long );
|
||||
#endif
|
||||
#ifdef FLOAT128
|
||||
float128 int64_to_float128( long long );
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE single-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
int float32_to_int32( float32 );
|
||||
int float32_to_int32_round_to_zero( float32 );
|
||||
#if defined(SOFTFLOAT_FOR_GCC) && defined(SOFTFLOAT_NEED_FIXUNS)
|
||||
unsigned int float32_to_uint32_round_to_zero( float32 );
|
||||
#endif
|
||||
#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */
|
||||
long long float32_to_int64( float32 );
|
||||
long long float32_to_int64_round_to_zero( float32 );
|
||||
#endif
|
||||
float64 float32_to_float64( float32 );
|
||||
#ifdef FLOATX80
|
||||
floatx80 float32_to_floatx80( float32 );
|
||||
#endif
|
||||
#ifdef FLOAT128
|
||||
float128 float32_to_float128( float32 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE single-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
float32 float32_round_to_int( float32 );
|
||||
float32 float32_add( float32, float32 );
|
||||
float32 float32_sub( float32, float32 );
|
||||
float32 float32_mul( float32, float32 );
|
||||
float32 float32_div( float32, float32 );
|
||||
float32 float32_rem( float32, float32 );
|
||||
float32 float32_sqrt( float32 );
|
||||
int float32_eq( float32, float32 );
|
||||
int float32_le( float32, float32 );
|
||||
int float32_lt( float32, float32 );
|
||||
int float32_eq_signaling( float32, float32 );
|
||||
int float32_le_quiet( float32, float32 );
|
||||
int float32_lt_quiet( float32, float32 );
|
||||
#ifndef SOFTFLOAT_FOR_GCC
|
||||
int float32_is_signaling_nan( float32 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE double-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
int float64_to_int32( float64 );
|
||||
int float64_to_int32_round_to_zero( float64 );
|
||||
#if defined(SOFTFLOAT_FOR_GCC) && defined(SOFTFLOAT_NEED_FIXUNS)
|
||||
unsigned int float64_to_uint32_round_to_zero( float64 );
|
||||
#endif
|
||||
#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */
|
||||
long long float64_to_int64( float64 );
|
||||
long long float64_to_int64_round_to_zero( float64 );
|
||||
#endif
|
||||
float32 float64_to_float32( float64 );
|
||||
#ifdef FLOATX80
|
||||
floatx80 float64_to_floatx80( float64 );
|
||||
#endif
|
||||
#ifdef FLOAT128
|
||||
float128 float64_to_float128( float64 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE double-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
float64 float64_round_to_int( float64 );
|
||||
float64 float64_add( float64, float64 );
|
||||
float64 float64_sub( float64, float64 );
|
||||
float64 float64_mul( float64, float64 );
|
||||
float64 float64_div( float64, float64 );
|
||||
float64 float64_rem( float64, float64 );
|
||||
float64 float64_sqrt( float64 );
|
||||
int float64_eq( float64, float64 );
|
||||
int float64_le( float64, float64 );
|
||||
int float64_lt( float64, float64 );
|
||||
int float64_eq_signaling( float64, float64 );
|
||||
int float64_le_quiet( float64, float64 );
|
||||
int float64_lt_quiet( float64, float64 );
|
||||
#ifndef SOFTFLOAT_FOR_GCC
|
||||
int float64_is_signaling_nan( float64 );
|
||||
#endif
|
||||
|
||||
#ifdef FLOATX80
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE extended double-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
int floatx80_to_int32( floatx80 );
|
||||
int floatx80_to_int32_round_to_zero( floatx80 );
|
||||
long long floatx80_to_int64( floatx80 );
|
||||
long long floatx80_to_int64_round_to_zero( floatx80 );
|
||||
float32 floatx80_to_float32( floatx80 );
|
||||
float64 floatx80_to_float64( floatx80 );
|
||||
#ifdef FLOAT128
|
||||
float128 floatx80_to_float128( floatx80 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE extended double-precision rounding precision. Valid
|
||||
values are 32, 64, and 80.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
extern int floatx80_rounding_precision;
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE extended double-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
floatx80 floatx80_round_to_int( floatx80 );
|
||||
floatx80 floatx80_add( floatx80, floatx80 );
|
||||
floatx80 floatx80_sub( floatx80, floatx80 );
|
||||
floatx80 floatx80_mul( floatx80, floatx80 );
|
||||
floatx80 floatx80_div( floatx80, floatx80 );
|
||||
floatx80 floatx80_rem( floatx80, floatx80 );
|
||||
floatx80 floatx80_sqrt( floatx80 );
|
||||
int floatx80_eq( floatx80, floatx80 );
|
||||
int floatx80_le( floatx80, floatx80 );
|
||||
int floatx80_lt( floatx80, floatx80 );
|
||||
int floatx80_eq_signaling( floatx80, floatx80 );
|
||||
int floatx80_le_quiet( floatx80, floatx80 );
|
||||
int floatx80_lt_quiet( floatx80, floatx80 );
|
||||
int floatx80_is_signaling_nan( floatx80 );
|
||||
|
||||
#endif
|
||||
|
||||
#ifdef FLOAT128
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE quadruple-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
int float128_to_int32( float128 );
|
||||
int float128_to_int32_round_to_zero( float128 );
|
||||
long long float128_to_int64( float128 );
|
||||
long long float128_to_int64_round_to_zero( float128 );
|
||||
float32 float128_to_float32( float128 );
|
||||
float64 float128_to_float64( float128 );
|
||||
#ifdef FLOATX80
|
||||
floatx80 float128_to_floatx80( float128 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE quadruple-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
float128 float128_round_to_int( float128 );
|
||||
float128 float128_add( float128, float128 );
|
||||
float128 float128_sub( float128, float128 );
|
||||
float128 float128_mul( float128, float128 );
|
||||
float128 float128_div( float128, float128 );
|
||||
float128 float128_rem( float128, float128 );
|
||||
float128 float128_sqrt( float128 );
|
||||
int float128_eq( float128, float128 );
|
||||
int float128_le( float128, float128 );
|
||||
int float128_lt( float128, float128 );
|
||||
int float128_eq_signaling( float128, float128 );
|
||||
int float128_le_quiet( float128, float128 );
|
||||
int float128_lt_quiet( float128, float128 );
|
||||
int float128_is_signaling_nan( float128 );
|
||||
|
||||
#endif
|
||||
|
||||
@ -12,8 +12,11 @@ CFLAGS+= -DSOFTFLOAT_FOR_GCC
|
||||
|
||||
SRCS+= softfloat.c
|
||||
|
||||
# Deprecated FPU control interface
|
||||
.if ${LIBC_ARCH} != "riscv"
|
||||
SRCS+= fpgetround.c fpsetround.c fpgetmask.c fpsetmask.c \
|
||||
fpgetsticky.c
|
||||
.endif
|
||||
|
||||
SRCS+= eqsf2.c nesf2.c gtsf2.c gesf2.c ltsf2.c lesf2.c negsf2.c \
|
||||
eqdf2.c nedf2.c gtdf2.c gedf2.c ltdf2.c ledf2.c negdf2.c \
|
||||
|
||||
@ -125,7 +125,7 @@ SRCF+= umodti3
|
||||
|
||||
#
|
||||
# 128-bit quad precision long double support,
|
||||
# only used on arm64 and riscv.
|
||||
# only used on some architectures.
|
||||
#
|
||||
.if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "riscv"
|
||||
SRCF+= addtf3
|
||||
@ -146,8 +146,9 @@ SRCF+= trunctfdf2
|
||||
SRCF+= trunctfsf2
|
||||
.endif
|
||||
|
||||
# These are already shipped by libc.a on arm and mips
|
||||
.if ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
|
||||
# These are already shipped by libc.a on some architectures.
|
||||
.if ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" && \
|
||||
${MACHINE_CPUARCH} != "riscv"
|
||||
SRCF+= adddf3
|
||||
SRCF+= addsf3
|
||||
SRCF+= divdf3
|
||||
|
||||
@ -1,3 +1,8 @@
|
||||
# $FreeBSD$
|
||||
|
||||
.if ${MACHINE_ARCH:Mriscv*sf} != ""
|
||||
CFLAGS+=-DSOFTFLOAT
|
||||
.endif
|
||||
|
||||
LDBL_PREC = 113
|
||||
SYM_MAPS += ${.CURDIR}/riscv/Symbol.map
|
||||
|
||||
21
lib/msun/riscv/Symbol.map
Normal file
21
lib/msun/riscv/Symbol.map
Normal file
@ -0,0 +1,21 @@
|
||||
/*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
FBSD_1.0 {
|
||||
};
|
||||
|
||||
FBSD_1.3 {
|
||||
feclearexcept;
|
||||
fegetexceptflag;
|
||||
fesetexceptflag;
|
||||
feraiseexcept;
|
||||
fetestexcept;
|
||||
fegetround;
|
||||
fesetround;
|
||||
fegetenv;
|
||||
feholdexcept;
|
||||
feupdateenv;
|
||||
feenableexcept;
|
||||
fedisableexcept;
|
||||
fegetexcept;
|
||||
};
|
||||
@ -39,6 +39,14 @@
|
||||
*/
|
||||
const fenv_t __fe_dfl_env = 0;
|
||||
|
||||
#ifdef SOFTFLOAT
|
||||
#define __set_env(env, flags, mask, rnd) env = ((flags) | (rnd) << 5)
|
||||
#define __env_flags(env) ((env) & FE_ALL_EXCEPT)
|
||||
#define __env_mask(env) (0) /* No exception traps. */
|
||||
#define __env_round(env) (((env) >> 5) & _ROUND_MASK)
|
||||
#include "fenv-softfloat.h"
|
||||
#endif
|
||||
|
||||
extern inline int feclearexcept(int __excepts);
|
||||
extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
|
||||
extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
|
||||
@ -50,3 +58,6 @@ extern inline int fegetenv(fenv_t *__envp);
|
||||
extern inline int feholdexcept(fenv_t *__envp);
|
||||
extern inline int fesetenv(const fenv_t *__envp);
|
||||
extern inline int feupdateenv(const fenv_t *__envp);
|
||||
extern inline int feenableexcept(int __mask);
|
||||
extern inline int fedisableexcept(int __mask);
|
||||
extern inline int fegetexcept(void);
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
/*-
|
||||
* Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
|
||||
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
|
||||
* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Portions of this software were developed by SRI International and the
|
||||
@ -59,11 +59,11 @@ typedef __uint64_t fexcept_t;
|
||||
/*
|
||||
* RISC-V Rounding modes
|
||||
*/
|
||||
#define FE_TONEAREST (0x00 << 5)
|
||||
#define FE_TOWARDZERO (0x01 << 5)
|
||||
#define FE_DOWNWARD (0x02 << 5)
|
||||
#define FE_UPWARD (0x03 << 5)
|
||||
#define _ROUND_SHIFT 5
|
||||
#define FE_TONEAREST (0x00 << _ROUND_SHIFT)
|
||||
#define FE_TOWARDZERO (0x01 << _ROUND_SHIFT)
|
||||
#define FE_DOWNWARD (0x02 << _ROUND_SHIFT)
|
||||
#define FE_UPWARD (0x03 << _ROUND_SHIFT)
|
||||
#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
|
||||
FE_UPWARD | FE_TOWARDZERO)
|
||||
|
||||
@ -73,96 +73,117 @@ __BEGIN_DECLS
|
||||
extern const fenv_t __fe_dfl_env;
|
||||
#define FE_DFL_ENV (&__fe_dfl_env)
|
||||
|
||||
/* We need to be able to map status flag positions to mask flag positions */
|
||||
#define _FPUSW_SHIFT 0
|
||||
#define _ENABLE_MASK (FE_ALL_EXCEPT << _FPUSW_SHIFT)
|
||||
|
||||
#define __rfs(__fpsr) __asm __volatile("csrr %0, fcsr" : "=r" (*(__fpsr)))
|
||||
#define __wfs(__fpsr) __asm __volatile("csrw fcsr, %0" :: "r" (__fpsr))
|
||||
#ifndef SOFTFLOAT
|
||||
#define __rfs(__fcsr) __asm __volatile("csrr %0, fcsr" : "=r" (__fcsr))
|
||||
#define __wfs(__fcsr) __asm __volatile("csrw fcsr, %0" :: "r" (__fcsr))
|
||||
#endif
|
||||
|
||||
#ifdef SOFTFLOAT
|
||||
int feclearexcept(int __excepts);
|
||||
int fegetexceptflag(fexcept_t *__flagp, int __excepts);
|
||||
int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
|
||||
int feraiseexcept(int __excepts);
|
||||
int fetestexcept(int __excepts);
|
||||
int fegetround(void);
|
||||
int fesetround(int __round);
|
||||
int fegetenv(fenv_t *__envp);
|
||||
int feholdexcept(fenv_t *__envp);
|
||||
int fesetenv(const fenv_t *__envp);
|
||||
int feupdateenv(const fenv_t *__envp);
|
||||
#else
|
||||
__fenv_static inline int
|
||||
feclearexcept(int __excepts)
|
||||
{
|
||||
fexcept_t __fpsr;
|
||||
|
||||
__rfs(&__fpsr);
|
||||
__fpsr &= ~__excepts;
|
||||
__wfs(__fpsr);
|
||||
__asm __volatile("csrc fflags, %0" :: "r"(__excepts));
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
fegetexceptflag(fexcept_t *__flagp, int __excepts)
|
||||
{
|
||||
fexcept_t __fpsr;
|
||||
fexcept_t __fcsr;
|
||||
|
||||
__rfs(__fcsr);
|
||||
*__flagp = __fcsr & __excepts;
|
||||
|
||||
__rfs(&__fpsr);
|
||||
*__flagp = __fpsr & __excepts;
|
||||
return (0);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
fesetexceptflag(const fexcept_t *__flagp, int __excepts)
|
||||
{
|
||||
fexcept_t __fpsr;
|
||||
fexcept_t __fcsr;
|
||||
|
||||
__fcsr = *__flagp;
|
||||
__asm __volatile("csrc fflags, %0" :: "r"(__excepts));
|
||||
__asm __volatile("csrs fflags, %0" :: "r"(__fcsr & __excepts));
|
||||
|
||||
__rfs(&__fpsr);
|
||||
__fpsr &= ~__excepts;
|
||||
__fpsr |= *__flagp & __excepts;
|
||||
__wfs(__fpsr);
|
||||
return (0);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
feraiseexcept(int __excepts)
|
||||
{
|
||||
fexcept_t __ex = __excepts;
|
||||
|
||||
fesetexceptflag(&__ex, __excepts); /* XXX */
|
||||
__asm __volatile("csrs fflags, %0" :: "r"(__excepts));
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
fetestexcept(int __excepts)
|
||||
{
|
||||
fexcept_t __fpsr;
|
||||
fexcept_t __fcsr;
|
||||
|
||||
__rfs(&__fpsr);
|
||||
return (__fpsr & __excepts);
|
||||
__rfs(__fcsr);
|
||||
|
||||
return (__fcsr & __excepts);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
fegetround(void)
|
||||
{
|
||||
fexcept_t __fcsr;
|
||||
|
||||
return (-1);
|
||||
__rfs(__fcsr);
|
||||
|
||||
return (__fcsr & _ROUND_MASK);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
fesetround(int __round)
|
||||
{
|
||||
fexcept_t __fcsr;
|
||||
|
||||
return (-1);
|
||||
if (__round & ~_ROUND_MASK)
|
||||
return (-1);
|
||||
|
||||
__rfs(__fcsr);
|
||||
__fcsr &= ~_ROUND_MASK;
|
||||
__fcsr |= __round;
|
||||
__wfs(__fcsr);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
fegetenv(fenv_t *__envp)
|
||||
{
|
||||
|
||||
__rfs(__envp);
|
||||
__rfs(*__envp);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
feholdexcept(fenv_t *__envp)
|
||||
{
|
||||
fenv_t __env;
|
||||
|
||||
__rfs(&__env);
|
||||
*__envp = __env;
|
||||
__env &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
|
||||
__wfs(__env);
|
||||
return (0);
|
||||
/* No exception traps. */
|
||||
|
||||
return (-1);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
@ -170,56 +191,59 @@ fesetenv(const fenv_t *__envp)
|
||||
{
|
||||
|
||||
__wfs(*__envp);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
__fenv_static inline int
|
||||
feupdateenv(const fenv_t *__envp)
|
||||
{
|
||||
fexcept_t __fpsr;
|
||||
fexcept_t __fcsr;
|
||||
|
||||
__rfs(&__fpsr);
|
||||
__rfs(__fcsr);
|
||||
__wfs(*__envp);
|
||||
feraiseexcept(__fpsr & FE_ALL_EXCEPT);
|
||||
feraiseexcept(__fcsr & FE_ALL_EXCEPT);
|
||||
|
||||
return (0);
|
||||
}
|
||||
#endif /* !SOFTFLOAT */
|
||||
|
||||
#if __BSD_VISIBLE
|
||||
|
||||
/* We currently provide no external definitions of the functions below. */
|
||||
|
||||
#ifdef SOFTFLOAT
|
||||
int feenableexcept(int __mask);
|
||||
int fedisableexcept(int __mask);
|
||||
int fegetexcept(void);
|
||||
#else
|
||||
static inline int
|
||||
feenableexcept(int __mask)
|
||||
{
|
||||
fenv_t __old_fpsr;
|
||||
fenv_t __new_fpsr;
|
||||
|
||||
__rfs(&__old_fpsr);
|
||||
__new_fpsr = __old_fpsr | (__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT;
|
||||
__wfs(__new_fpsr);
|
||||
return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
|
||||
/* No exception traps. */
|
||||
|
||||
return (-1);
|
||||
}
|
||||
|
||||
static inline int
|
||||
fedisableexcept(int __mask)
|
||||
{
|
||||
fenv_t __old_fpsr;
|
||||
fenv_t __new_fpsr;
|
||||
|
||||
__rfs(&__old_fpsr);
|
||||
__new_fpsr = __old_fpsr & ~((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT);
|
||||
__wfs(__new_fpsr);
|
||||
return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
|
||||
/* No exception traps. */
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static inline int
|
||||
fegetexcept(void)
|
||||
{
|
||||
fenv_t __fpsr;
|
||||
|
||||
__rfs(&__fpsr);
|
||||
return ((__fpsr & _ENABLE_MASK) >> _FPUSW_SHIFT);
|
||||
/* No exception traps. */
|
||||
|
||||
return (0);
|
||||
}
|
||||
#endif /* !SOFTFLOAT */
|
||||
|
||||
#endif /* __BSD_VISIBLE */
|
||||
|
||||
|
||||
@ -155,8 +155,6 @@ _CPUCFLAGS = -march=${CPUTYPE}
|
||||
# sb1, xlp, xlr
|
||||
_CPUCFLAGS = -march=${CPUTYPE:S/^mips//}
|
||||
. endif
|
||||
. elif ${MACHINE_CPUARCH} == "riscv"
|
||||
_CPUCFLAGS = -mno-float -march="IMAFD"
|
||||
. elif ${MACHINE_ARCH} == "sparc64"
|
||||
. if ${CPUTYPE} == "v9"
|
||||
_CPUCFLAGS = -mcpu=v9
|
||||
@ -350,9 +348,11 @@ CFLAGS += -mcpu=8540 -Wa,-me500 -mspe=yes -mabi=spe -mfloat-gprs=double
|
||||
.endif
|
||||
|
||||
.if ${MACHINE_CPUARCH} == "riscv"
|
||||
.if ${TARGET_ARCH:Mriscv*sf}
|
||||
CFLAGS += -mno-float
|
||||
ACFLAGS += -mno-float
|
||||
.endif
|
||||
.endif
|
||||
|
||||
# NB: COPTFLAGS is handled in /usr/src/sys/conf/kern.pre.mk
|
||||
|
||||
|
||||
@ -48,7 +48,7 @@ TARGET_ARCHES_arm64?= aarch64
|
||||
TARGET_ARCHES_mips?= mipsel mips mips64el mips64 mipsn32 mipsn32el
|
||||
TARGET_ARCHES_powerpc?= powerpc powerpc64 powerpcspe
|
||||
TARGET_ARCHES_pc98?= i386
|
||||
TARGET_ARCHES_riscv?= riscv64
|
||||
TARGET_ARCHES_riscv?= riscv64 riscv64sf
|
||||
|
||||
# some corner cases
|
||||
BOOT_MACHINE_DIR.amd64 = boot/i386
|
||||
|
||||
@ -236,16 +236,16 @@ __DEFAULT_YES_OPTIONS+=GCC GCC_BOOTSTRAP GNUCXX
|
||||
__DEFAULT_NO_OPTIONS+=CLANG CLANG_BOOTSTRAP CLANG_FULL CLANG_IS_CC
|
||||
.endif
|
||||
# In-tree binutils/gcc are older versions without modern architecture support.
|
||||
.if ${__T} == "aarch64" || ${__T} == "riscv64"
|
||||
.if ${__T} == "aarch64" || ${__T:Mriscv*} != ""
|
||||
BROKEN_OPTIONS+=BINUTILS BINUTILS_BOOTSTRAP GCC GCC_BOOTSTRAP GDB
|
||||
.endif
|
||||
.if ${__T} == "riscv64"
|
||||
.if ${__T:Mriscv*} != ""
|
||||
BROKEN_OPTIONS+=PROFILE # "sorry, unimplemented: profiler support for RISC-V"
|
||||
BROKEN_OPTIONS+=TESTS # "undefined reference to `_Unwind_Resume'"
|
||||
BROKEN_OPTIONS+=CXX # "libcxxrt.so: undefined reference to `_Unwind_Resume_or_Rethrow'"
|
||||
.endif
|
||||
.if ${__T} == "aarch64" || ${__T} == "amd64" || ${__T} == "i386" || \
|
||||
${__T} == "riscv64"
|
||||
${__T:Mriscv*} != ""
|
||||
__DEFAULT_YES_OPTIONS+=LLVM_LIBUNWIND
|
||||
.else
|
||||
__DEFAULT_NO_OPTIONS+=LLVM_LIBUNWIND
|
||||
|
||||
@ -13,7 +13,7 @@ unix ?= We run FreeBSD, not UNIX.
|
||||
# and/or endian. This is called MACHINE_CPU in NetBSD, but that's used
|
||||
# for something different in FreeBSD.
|
||||
#
|
||||
MACHINE_CPUARCH=${MACHINE_ARCH:C/mips(n32|64)?(el)?(hf)?/mips/:C/arm(v6)?(eb|hf)?/arm/:C/powerpc(64|spe)/powerpc/:C/riscv64/riscv/}
|
||||
MACHINE_CPUARCH=${MACHINE_ARCH:C/mips(n32|64)?(el)?(hf)?/mips/:C/arm(v6)?(eb|hf)?/arm/:C/powerpc(64|spe)/powerpc/:C/riscv64(sf)?/riscv/}
|
||||
.endif
|
||||
|
||||
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
# $FreeBSD$
|
||||
|
||||
RISCV opt_global.h
|
||||
VFP opt_global.h
|
||||
FPE opt_global.h
|
||||
|
||||
@ -60,7 +60,11 @@ assym.o: assym.s
|
||||
|
||||
.if ${MACHINE_CPUARCH} == "riscv"
|
||||
assym.o: assym.s
|
||||
.if ${TARGET_ARCH:Mriscv*sf}
|
||||
${AS} -mfloat-abi=soft -o assym.o assym.s
|
||||
.else
|
||||
${AS} -mfloat-abi=double -o assym.o assym.s
|
||||
.endif
|
||||
.endif
|
||||
|
||||
.include <bsd.kmod.mk>
|
||||
|
||||
@ -69,7 +69,7 @@ options CAPABILITIES # Capsicum capabilities
|
||||
options MAC # TrustedBSD MAC Framework
|
||||
options KDTRACE_FRAME # Ensure frames are compiled in
|
||||
options KDTRACE_HOOKS # Kernel DTrace hooks
|
||||
# options VFP # Floating-point support
|
||||
options FPE # Floating-point extension support
|
||||
options RACCT # Resource accounting framework
|
||||
options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
|
||||
options RCTL # Resource limits
|
||||
|
||||
38
sys/riscv/include/fpe.h
Normal file
38
sys/riscv/include/fpe.h
Normal file
@ -0,0 +1,38 @@
|
||||
/*-
|
||||
* Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* This software was developed by SRI International and the University of
|
||||
* Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
|
||||
* ("CTSRD"), as part of the DARPA CRASH research programme.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#ifndef _MACHINE_FPE_H_
|
||||
#define _MACHINE_FPE_H_
|
||||
|
||||
void fpe_state_save(struct thread *td);
|
||||
|
||||
#endif /* !_MACHINE_FPE_H_ */
|
||||
@ -1,5 +1,5 @@
|
||||
/*-
|
||||
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
|
||||
* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Portions of this software were developed by SRI International and the
|
||||
@ -42,16 +42,21 @@
|
||||
struct trapframe;
|
||||
|
||||
struct pcb {
|
||||
uint64_t pcb_ra;
|
||||
uint64_t pcb_sp;
|
||||
uint64_t pcb_gp;
|
||||
uint64_t pcb_tp;
|
||||
uint64_t pcb_t[7];
|
||||
uint64_t pcb_s[12];
|
||||
uint64_t pcb_a[8];
|
||||
uint64_t pcb_sepc;
|
||||
uint64_t pcb_ra; /* Return address */
|
||||
uint64_t pcb_sp; /* Stack pointer */
|
||||
uint64_t pcb_gp; /* Global pointer */
|
||||
uint64_t pcb_tp; /* Thread pointer */
|
||||
uint64_t pcb_t[7]; /* Temporary registers */
|
||||
uint64_t pcb_s[12]; /* Saved registers */
|
||||
uint64_t pcb_a[8]; /* Argument registers */
|
||||
uint64_t pcb_x[32][2]; /* Floating point registers */
|
||||
uint64_t pcb_fcsr; /* Floating point control reg */
|
||||
uint64_t pcb_fpflags; /* Floating point flags */
|
||||
#define PCB_FP_STARTED 0x1
|
||||
#define PCB_FP_USERMASK 0x1
|
||||
uint64_t pcb_sepc; /* Supervisor exception pc */
|
||||
vm_offset_t pcb_l1addr; /* L1 page tables base address */
|
||||
vm_offset_t pcb_onfault;
|
||||
vm_offset_t pcb_onfault; /* Copyinout fault handler */
|
||||
};
|
||||
|
||||
#ifdef _KERNEL
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
/*-
|
||||
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
|
||||
* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Portions of this software were developed by SRI International and the
|
||||
@ -50,7 +50,8 @@ struct reg {
|
||||
};
|
||||
|
||||
struct fpreg {
|
||||
int dummy;
|
||||
uint64_t fp_x[32][2]; /* Floating point registers */
|
||||
uint64_t fp_fcsr; /* Floating point control reg */
|
||||
};
|
||||
|
||||
struct dbreg {
|
||||
|
||||
@ -60,10 +60,14 @@
|
||||
#define SSTATUS_SPIE_SHIFT 5
|
||||
#define SSTATUS_SPP (1 << 8)
|
||||
#define SSTATUS_SPP_SHIFT 8
|
||||
#define SSTATUS_FS_MASK 0x3
|
||||
#define SSTATUS_FS_SHIFT 13
|
||||
#define SSTATUS_XS_MASK 0x3
|
||||
#define SSTATUS_FS_OFF (0x0 << SSTATUS_FS_SHIFT)
|
||||
#define SSTATUS_FS_INITIAL (0x1 << SSTATUS_FS_SHIFT)
|
||||
#define SSTATUS_FS_CLEAN (0x2 << SSTATUS_FS_SHIFT)
|
||||
#define SSTATUS_FS_DIRTY (0x3 << SSTATUS_FS_SHIFT)
|
||||
#define SSTATUS_FS_MASK (0x3 << SSTATUS_FS_SHIFT)
|
||||
#define SSTATUS_XS_SHIFT 15
|
||||
#define SSTATUS_XS_MASK (0x3 << SSTATUS_XS_SHIFT)
|
||||
#define SSTATUS_PUM (1 << 18)
|
||||
#define SSTATUS32_SD (1 << 63)
|
||||
#define SSTATUS64_SD (1 << 31)
|
||||
|
||||
@ -72,6 +72,8 @@ ASSYM(PCB_TP, offsetof(struct pcb, pcb_tp));
|
||||
ASSYM(PCB_T, offsetof(struct pcb, pcb_t));
|
||||
ASSYM(PCB_S, offsetof(struct pcb, pcb_s));
|
||||
ASSYM(PCB_A, offsetof(struct pcb, pcb_a));
|
||||
ASSYM(PCB_X, offsetof(struct pcb, pcb_x));
|
||||
ASSYM(PCB_FCSR, offsetof(struct pcb, pcb_fcsr));
|
||||
|
||||
ASSYM(SF_UC, offsetof(struct sigframe, sf_uc));
|
||||
|
||||
|
||||
@ -84,8 +84,8 @@ __FBSDID("$FreeBSD$");
|
||||
|
||||
#include <machine/asm.h>
|
||||
|
||||
#ifdef VFP
|
||||
#include <machine/vfp.h>
|
||||
#ifdef FPE
|
||||
#include <machine/fpe.h>
|
||||
#endif
|
||||
|
||||
#ifdef FDT
|
||||
@ -203,17 +203,39 @@ set_regs(struct thread *td, struct reg *regs)
|
||||
int
|
||||
fill_fpregs(struct thread *td, struct fpreg *regs)
|
||||
{
|
||||
#ifdef FPE
|
||||
struct pcb *pcb;
|
||||
|
||||
pcb = td->td_pcb;
|
||||
|
||||
if ((pcb->pcb_fpflags & PCB_FP_STARTED) != 0) {
|
||||
/*
|
||||
* If we have just been running FPE instructions we will
|
||||
* need to save the state to memcpy it below.
|
||||
*/
|
||||
fpe_state_save(td);
|
||||
|
||||
memcpy(regs->fp_x, pcb->pcb_x, sizeof(regs->fp_x));
|
||||
regs->fp_fcsr = pcb->pcb_fcsr;
|
||||
} else
|
||||
#endif
|
||||
memset(regs->fp_x, 0, sizeof(regs->fp_x));
|
||||
|
||||
/* TODO */
|
||||
bzero(regs, sizeof(*regs));
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
set_fpregs(struct thread *td, struct fpreg *regs)
|
||||
{
|
||||
#ifdef FPE
|
||||
struct pcb *pcb;
|
||||
|
||||
pcb = td->td_pcb;
|
||||
|
||||
memcpy(pcb->pcb_x, regs->fp_x, sizeof(regs->fp_x));
|
||||
pcb->pcb_fcsr = regs->fp_fcsr;
|
||||
#endif
|
||||
|
||||
/* TODO */
|
||||
return (0);
|
||||
}
|
||||
|
||||
@ -259,8 +281,10 @@ void
|
||||
exec_setregs(struct thread *td, struct image_params *imgp, u_long stack)
|
||||
{
|
||||
struct trapframe *tf;
|
||||
struct pcb *pcb;
|
||||
|
||||
tf = td->td_frame;
|
||||
pcb = td->td_pcb;
|
||||
|
||||
memset(tf, 0, sizeof(struct trapframe));
|
||||
|
||||
@ -273,6 +297,8 @@ exec_setregs(struct thread *td, struct image_params *imgp, u_long stack)
|
||||
tf->tf_sp = STACKALIGN(stack);
|
||||
tf->tf_ra = imgp->entry_addr;
|
||||
tf->tf_sepc = imgp->entry_addr;
|
||||
|
||||
pcb->pcb_fpflags &= ~PCB_FP_STARTED;
|
||||
}
|
||||
|
||||
/* Sanity check these are the same size, they will be memcpy'd to and fro */
|
||||
@ -337,13 +363,54 @@ set_mcontext(struct thread *td, mcontext_t *mcp)
|
||||
static void
|
||||
get_fpcontext(struct thread *td, mcontext_t *mcp)
|
||||
{
|
||||
/* TODO */
|
||||
#ifdef FPE
|
||||
struct pcb *curpcb;
|
||||
|
||||
critical_enter();
|
||||
|
||||
curpcb = curthread->td_pcb;
|
||||
|
||||
KASSERT(td->td_pcb == curpcb, ("Invalid fpe pcb"));
|
||||
|
||||
if ((curpcb->pcb_fpflags & PCB_FP_STARTED) != 0) {
|
||||
/*
|
||||
* If we have just been running FPE instructions we will
|
||||
* need to save the state to memcpy it below.
|
||||
*/
|
||||
fpe_state_save(td);
|
||||
|
||||
KASSERT((curpcb->pcb_fpflags & ~PCB_FP_USERMASK) == 0,
|
||||
("Non-userspace FPE flags set in get_fpcontext"));
|
||||
memcpy(mcp->mc_fpregs.fp_x, curpcb->pcb_x,
|
||||
sizeof(mcp->mc_fpregs));
|
||||
mcp->mc_fpregs.fp_fcsr = curpcb->pcb_fcsr;
|
||||
mcp->mc_fpregs.fp_flags = curpcb->pcb_fpflags;
|
||||
mcp->mc_flags |= _MC_FP_VALID;
|
||||
}
|
||||
|
||||
critical_exit();
|
||||
#endif
|
||||
}
|
||||
|
||||
static void
|
||||
set_fpcontext(struct thread *td, mcontext_t *mcp)
|
||||
{
|
||||
/* TODO */
|
||||
#ifdef FPE
|
||||
struct pcb *curpcb;
|
||||
|
||||
critical_enter();
|
||||
|
||||
if ((mcp->mc_flags & _MC_FP_VALID) != 0) {
|
||||
curpcb = curthread->td_pcb;
|
||||
/* FPE usage is enabled, override registers. */
|
||||
memcpy(curpcb->pcb_x, mcp->mc_fpregs.fp_x,
|
||||
sizeof(mcp->mc_fpregs));
|
||||
curpcb->pcb_fcsr = mcp->mc_fpregs.fp_fcsr;
|
||||
curpcb->pcb_fpflags = mcp->mc_fpregs.fp_flags & PCB_FP_USERMASK;
|
||||
}
|
||||
|
||||
critical_exit();
|
||||
#endif
|
||||
}
|
||||
|
||||
void
|
||||
@ -572,6 +639,7 @@ init_proc0(vm_offset_t kstack)
|
||||
proc_linkup0(&proc0, &thread0);
|
||||
thread0.td_kstack = kstack;
|
||||
thread0.td_pcb = (struct pcb *)(thread0.td_kstack) - 1;
|
||||
thread0.td_pcb->pcb_fpflags = 0;
|
||||
thread0.td_frame = &proc0_tf;
|
||||
pcpup->pc_curpcb = thread0.td_pcb;
|
||||
}
|
||||
|
||||
@ -62,9 +62,6 @@ __FBSDID("$FreeBSD$");
|
||||
#include <machine/intr.h>
|
||||
#include <machine/smp.h>
|
||||
#include <machine/sbi.h>
|
||||
#ifdef VFP
|
||||
#include <machine/vfp.h>
|
||||
#endif
|
||||
|
||||
#ifdef FDT
|
||||
#include <dev/ofw/openfirm.h>
|
||||
@ -242,10 +239,6 @@ init_secondary(uint64_t cpu)
|
||||
/* Start per-CPU event timers. */
|
||||
cpu_initclocks_ap();
|
||||
|
||||
#ifdef VFP
|
||||
/* TODO: init FPU */
|
||||
#endif
|
||||
|
||||
/* Enable interrupts */
|
||||
intr_enable();
|
||||
|
||||
|
||||
@ -42,6 +42,117 @@
|
||||
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#ifdef FPE
|
||||
.macro __fpe_state_save p
|
||||
/*
|
||||
* Enable FPE usage in supervisor mode,
|
||||
* so we can access registers.
|
||||
*/
|
||||
li t0, SSTATUS_FS_INITIAL
|
||||
csrs sstatus, t0
|
||||
|
||||
/* Store registers */
|
||||
frcsr t0
|
||||
sd t0, (PCB_FCSR)(\p)
|
||||
fsd f0, (PCB_X + 0 * 16)(\p)
|
||||
fsd f1, (PCB_X + 1 * 16)(\p)
|
||||
fsd f2, (PCB_X + 2 * 16)(\p)
|
||||
fsd f3, (PCB_X + 3 * 16)(\p)
|
||||
fsd f4, (PCB_X + 4 * 16)(\p)
|
||||
fsd f5, (PCB_X + 5 * 16)(\p)
|
||||
fsd f6, (PCB_X + 6 * 16)(\p)
|
||||
fsd f7, (PCB_X + 7 * 16)(\p)
|
||||
fsd f8, (PCB_X + 8 * 16)(\p)
|
||||
fsd f9, (PCB_X + 9 * 16)(\p)
|
||||
fsd f10, (PCB_X + 10 * 16)(\p)
|
||||
fsd f11, (PCB_X + 11 * 16)(\p)
|
||||
fsd f12, (PCB_X + 12 * 16)(\p)
|
||||
fsd f13, (PCB_X + 13 * 16)(\p)
|
||||
fsd f14, (PCB_X + 14 * 16)(\p)
|
||||
fsd f15, (PCB_X + 15 * 16)(\p)
|
||||
fsd f16, (PCB_X + 16 * 16)(\p)
|
||||
fsd f17, (PCB_X + 17 * 16)(\p)
|
||||
fsd f18, (PCB_X + 18 * 16)(\p)
|
||||
fsd f19, (PCB_X + 19 * 16)(\p)
|
||||
fsd f20, (PCB_X + 20 * 16)(\p)
|
||||
fsd f21, (PCB_X + 21 * 16)(\p)
|
||||
fsd f22, (PCB_X + 22 * 16)(\p)
|
||||
fsd f23, (PCB_X + 23 * 16)(\p)
|
||||
fsd f24, (PCB_X + 24 * 16)(\p)
|
||||
fsd f25, (PCB_X + 25 * 16)(\p)
|
||||
fsd f26, (PCB_X + 26 * 16)(\p)
|
||||
fsd f27, (PCB_X + 27 * 16)(\p)
|
||||
fsd f28, (PCB_X + 28 * 16)(\p)
|
||||
fsd f29, (PCB_X + 29 * 16)(\p)
|
||||
fsd f30, (PCB_X + 30 * 16)(\p)
|
||||
fsd f31, (PCB_X + 31 * 16)(\p)
|
||||
|
||||
/* Disable FPE usage in supervisor mode. */
|
||||
li t0, SSTATUS_FS_MASK
|
||||
csrc sstatus, t0
|
||||
.endm
|
||||
|
||||
.macro __fpe_state_load p
|
||||
/*
|
||||
* Enable FPE usage in supervisor mode,
|
||||
* so we can access registers.
|
||||
*/
|
||||
li t0, SSTATUS_FS_INITIAL
|
||||
csrs sstatus, t0
|
||||
|
||||
/* Restore registers */
|
||||
ld t0, (PCB_FCSR)(\p)
|
||||
fscsr t0
|
||||
fld f0, (PCB_X + 0 * 16)(\p)
|
||||
fld f1, (PCB_X + 1 * 16)(\p)
|
||||
fld f2, (PCB_X + 2 * 16)(\p)
|
||||
fld f3, (PCB_X + 3 * 16)(\p)
|
||||
fld f4, (PCB_X + 4 * 16)(\p)
|
||||
fld f5, (PCB_X + 5 * 16)(\p)
|
||||
fld f6, (PCB_X + 6 * 16)(\p)
|
||||
fld f7, (PCB_X + 7 * 16)(\p)
|
||||
fld f8, (PCB_X + 8 * 16)(\p)
|
||||
fld f9, (PCB_X + 9 * 16)(\p)
|
||||
fld f10, (PCB_X + 10 * 16)(\p)
|
||||
fld f11, (PCB_X + 11 * 16)(\p)
|
||||
fld f12, (PCB_X + 12 * 16)(\p)
|
||||
fld f13, (PCB_X + 13 * 16)(\p)
|
||||
fld f14, (PCB_X + 14 * 16)(\p)
|
||||
fld f15, (PCB_X + 15 * 16)(\p)
|
||||
fld f16, (PCB_X + 16 * 16)(\p)
|
||||
fld f17, (PCB_X + 17 * 16)(\p)
|
||||
fld f18, (PCB_X + 18 * 16)(\p)
|
||||
fld f19, (PCB_X + 19 * 16)(\p)
|
||||
fld f20, (PCB_X + 20 * 16)(\p)
|
||||
fld f21, (PCB_X + 21 * 16)(\p)
|
||||
fld f22, (PCB_X + 22 * 16)(\p)
|
||||
fld f23, (PCB_X + 23 * 16)(\p)
|
||||
fld f24, (PCB_X + 24 * 16)(\p)
|
||||
fld f25, (PCB_X + 25 * 16)(\p)
|
||||
fld f26, (PCB_X + 26 * 16)(\p)
|
||||
fld f27, (PCB_X + 27 * 16)(\p)
|
||||
fld f28, (PCB_X + 28 * 16)(\p)
|
||||
fld f29, (PCB_X + 29 * 16)(\p)
|
||||
fld f30, (PCB_X + 30 * 16)(\p)
|
||||
fld f31, (PCB_X + 31 * 16)(\p)
|
||||
|
||||
/* Disable FPE usage in supervisor mode. */
|
||||
li t0, SSTATUS_FS_MASK
|
||||
csrc sstatus, t0
|
||||
.endm
|
||||
|
||||
/*
|
||||
* void
|
||||
* fpe_state_save(struct thread *td)
|
||||
*/
|
||||
ENTRY(fpe_state_save)
|
||||
/* Get pointer to PCB */
|
||||
ld a0, TD_PCB(a0)
|
||||
__fpe_state_save a0
|
||||
ret
|
||||
END(fpe_state_save)
|
||||
#endif /* FPE */
|
||||
|
||||
/*
|
||||
* void cpu_throw(struct thread *old, struct thread *new)
|
||||
*/
|
||||
@ -81,8 +192,20 @@ ENTRY(cpu_throw)
|
||||
ld s10, (PCB_S + 10 * 8)(x13)
|
||||
ld s11, (PCB_S + 11 * 8)(x13)
|
||||
|
||||
ret
|
||||
#ifdef FPE
|
||||
/* Is FPE enabled for new thread? */
|
||||
ld t0, TD_FRAME(a1)
|
||||
ld t1, (TF_SSTATUS)(t0)
|
||||
li t2, SSTATUS_FS_MASK
|
||||
and t3, t1, t2
|
||||
beqz t3, 1f /* No, skip. */
|
||||
|
||||
/* Restore registers. */
|
||||
__fpe_state_load x13
|
||||
1:
|
||||
#endif
|
||||
|
||||
ret
|
||||
.Lcpu_throw_panic_str:
|
||||
.asciz "cpu_throw: %p\0"
|
||||
END(cpu_throw)
|
||||
@ -123,6 +246,29 @@ ENTRY(cpu_switch)
|
||||
sd s10, (PCB_S + 10 * 8)(x13)
|
||||
sd s11, (PCB_S + 11 * 8)(x13)
|
||||
|
||||
#ifdef FPE
|
||||
/*
|
||||
* Is FPE enabled and is it in dirty state
|
||||
* for the old thread?
|
||||
*/
|
||||
ld t0, TD_FRAME(a0)
|
||||
ld t1, (TF_SSTATUS)(t0)
|
||||
li t2, SSTATUS_FS_MASK
|
||||
and t3, t1, t2
|
||||
li t2, SSTATUS_FS_DIRTY
|
||||
bne t3, t2, 1f /* No, skip. */
|
||||
|
||||
/* Yes, mark FPE state clean and save registers. */
|
||||
li t2, ~SSTATUS_FS_MASK
|
||||
and t3, t1, t2
|
||||
li t2, SSTATUS_FS_CLEAN
|
||||
or t3, t3, t2
|
||||
sd t3, (TF_SSTATUS)(t0)
|
||||
|
||||
__fpe_state_save x13
|
||||
1:
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Restore the saved context.
|
||||
*/
|
||||
@ -171,6 +317,20 @@ ENTRY(cpu_switch)
|
||||
ld s9, (PCB_S + 9 * 8)(x13)
|
||||
ld s10, (PCB_S + 10 * 8)(x13)
|
||||
ld s11, (PCB_S + 11 * 8)(x13)
|
||||
|
||||
#ifdef FPE
|
||||
/* Is FPE enabled for new thread? */
|
||||
ld t0, TD_FRAME(a1)
|
||||
ld t1, (TF_SSTATUS)(t0)
|
||||
li t2, SSTATUS_FS_MASK
|
||||
and t3, t1, t2
|
||||
beqz t3, 1f /* No, skip. */
|
||||
|
||||
/* Restore registers. */
|
||||
__fpe_state_load x13
|
||||
1:
|
||||
#endif
|
||||
|
||||
ret
|
||||
.Lcpu_switch_panic_str:
|
||||
.asciz "cpu_switch: %p\0"
|
||||
@ -269,9 +429,8 @@ ENTRY(savectx)
|
||||
sd s10, (PCB_S + 10 * 8)(a0)
|
||||
sd s11, (PCB_S + 11 * 8)(a0)
|
||||
|
||||
/* Store the VFP registers */
|
||||
#ifdef VFP
|
||||
/* TODO */
|
||||
#ifdef FPE
|
||||
__fpe_state_save a0
|
||||
#endif
|
||||
ret
|
||||
END(savectx)
|
||||
|
||||
@ -328,9 +328,11 @@ do_trap_user(struct trapframe *frame)
|
||||
uint64_t exception;
|
||||
struct thread *td;
|
||||
uint64_t sstatus;
|
||||
struct pcb *pcb;
|
||||
|
||||
td = curthread;
|
||||
td->td_frame = frame;
|
||||
pcb = td->td_pcb;
|
||||
|
||||
/* Ensure we came from usermode, interrupts disabled */
|
||||
__asm __volatile("csrr %0, sstatus" : "=&r" (sstatus));
|
||||
@ -358,6 +360,17 @@ do_trap_user(struct trapframe *frame)
|
||||
svc_handler(frame);
|
||||
break;
|
||||
case EXCP_ILLEGAL_INSTRUCTION:
|
||||
#ifdef FPE
|
||||
if ((pcb->pcb_fpflags & PCB_FP_STARTED) == 0) {
|
||||
/*
|
||||
* May be a FPE trap. Enable FPE usage
|
||||
* for this thread and try again.
|
||||
*/
|
||||
frame->tf_sstatus |= SSTATUS_FS_INITIAL;
|
||||
pcb->pcb_fpflags |= PCB_FP_STARTED;
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)frame->tf_sepc);
|
||||
userret(td, frame);
|
||||
break;
|
||||
|
||||
@ -87,8 +87,8 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags)
|
||||
/* Arguments for child */
|
||||
tf->tf_a[0] = 0;
|
||||
tf->tf_a[1] = 0;
|
||||
tf->tf_sstatus = (SSTATUS_SPIE);
|
||||
tf->tf_sstatus |= (MSTATUS_PRV_U << MSTATUS_SPP_SHIFT);
|
||||
tf->tf_sstatus |= (SSTATUS_SPIE); /* Enable interrupts. */
|
||||
tf->tf_sstatus &= ~(SSTATUS_SPP); /* User mode. */
|
||||
|
||||
td2->td_frame = tf;
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user