From: Andrew Waterman Date: Mon, 27 Jan 2014 00:26:39 +0000 (-0800) Subject: Eliminate hwacha <-> riscv circular dependence X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fb3be246718190972e8e30688d64632cbb910329;p=riscv-isa-sim.git Eliminate hwacha <-> riscv circular dependence We now split out the spike executable into another subproject, which depends on both rocket and hwacha --- diff --git a/configure b/configure index 7da38cf..cab6739 100755 --- a/configure +++ b/configure @@ -1,13 +1,11 @@ #! /bin/sh # Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.68 for RISC-V ISA Simulator ?. +# Generated by GNU Autoconf 2.69 for RISC-V ISA Simulator ?. # # Report bugs to . # # -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, -# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software -# Foundation, Inc. +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. # # # This configure script is free software; the Free Software Foundation @@ -136,6 +134,31 @@ export LANGUAGE # CDPATH. (unset CDPATH) >/dev/null 2>&1 && unset CDPATH +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} if test "x$CONFIG_SHELL" = x; then as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : emulate sh @@ -169,7 +192,8 @@ if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : else exitcode=1; echo positional parameters were not saved. fi -test x\$exitcode = x0 || exit 1" +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && @@ -214,21 +238,25 @@ IFS=$as_save_IFS if test "x$CONFIG_SHELL" != x; then : - # We cannot yet assume a decent shell, so we have to provide a - # neutralization value for shells without unset; and this also - # works around shells that cannot unset nonexistent variables. - # Preserve -v and -x to the replacement shell. - BASH_ENV=/dev/null - ENV=/dev/null - (unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV - export CONFIG_SHELL - case $- in # (((( - *v*x* | *x*v* ) as_opts=-vx ;; - *v* ) as_opts=-v ;; - *x* ) as_opts=-x ;; - * ) as_opts= ;; - esac - exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"} + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 fi if test x$as_have_required = xno; then : @@ -331,6 +359,14 @@ $as_echo X"$as_dir" | } # as_fn_mkdir_p + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p # as_fn_append VAR VALUE # ---------------------- # Append the text in VALUE to the end of the definition contained in VAR. Take @@ -452,6 +488,10 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits chmod +x "$as_me.lineno" || { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; } + # If we had to re-execute with $CONFIG_SHELL, we're ensured to have + # already done that, so ensure we don't try to do so again and fall + # in an infinite loop. This has already happened in practice. + _as_can_reexec=no; export _as_can_reexec # Don't try to exec as it changes $[0], causing all sort of problems # (the dirname of $[0] is not the place where we might find the # original and so on. Autoconf is especially sensitive to this). @@ -486,16 +526,16 @@ if (echo >conf$$.file) 2>/dev/null; then # ... but there are two gotchas: # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail. # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable. - # In both cases, we have to default to `cp -p'. + # In both cases, we have to default to `cp -pR'. ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe || - as_ln_s='cp -p' + as_ln_s='cp -pR' elif ln conf$$.file conf$$ 2>/dev/null; then as_ln_s=ln else - as_ln_s='cp -p' + as_ln_s='cp -pR' fi else - as_ln_s='cp -p' + as_ln_s='cp -pR' fi rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file rmdir conf$$.dir 2>/dev/null @@ -507,28 +547,8 @@ else as_mkdir_p=false fi -if test -x / >/dev/null 2>&1; then - as_test_x='test -x' -else - if ls -dL / >/dev/null 2>&1; then - as_ls_L_option=L - else - as_ls_L_option= - fi - as_test_x=' - eval sh -c '\'' - if test -d "$1"; then - test -d "$1/."; - else - case $1 in #( - -*)set "./$1";; - esac; - case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #(( - ???[sx]*):;;*)false;;esac;fi - '\'' sh - ' -fi -as_executable_p=$as_test_x +as_test_x='test -x' +as_executable_p=as_fn_executable_p # Sed expression to map a string onto a valid CPP name. as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'" @@ -1120,8 +1140,6 @@ target=$target_alias if test "x$host_alias" != x; then if test "x$build_alias" = x; then cross_compiling=maybe - $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host. - If a cross compiler is detected then cross compile mode will be used" >&2 elif test "x$build_alias" != "x$host_alias"; then cross_compiling=yes fi @@ -1374,9 +1392,9 @@ test -n "$ac_init_help" && exit $ac_status if $ac_init_version; then cat <<\_ACEOF RISC-V ISA Simulator configure ? -generated by GNU Autoconf 2.68 +generated by GNU Autoconf 2.69 -Copyright (C) 2010 Free Software Foundation, Inc. +Copyright (C) 2012 Free Software Foundation, Inc. This configure script is free software; the Free Software Foundation gives unlimited permission to copy, distribute and modify it. _ACEOF @@ -1569,7 +1587,7 @@ $as_echo "$ac_try_echo"; } >&5 test ! -s conftest.err } && test -s conftest$ac_exeext && { test "$cross_compiling" = yes || - $as_test_x conftest$ac_exeext + test -x conftest$ac_exeext }; then : ac_retval=0 else @@ -1592,7 +1610,7 @@ This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. It was created by RISC-V ISA Simulator $as_me ?, which was -generated by GNU Autoconf 2.68. Invocation command line was +generated by GNU Autoconf 2.69. Invocation command line was $ $0 $@ @@ -2067,7 +2085,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_CC="${ac_tool_prefix}gcc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -2107,7 +2125,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_CC="gcc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -2160,7 +2178,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_CC="${ac_tool_prefix}cc" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -2201,7 +2219,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then ac_prog_rejected=yes continue @@ -2259,7 +2277,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_CC="$ac_tool_prefix$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -2303,7 +2321,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_CC="$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -2749,8 +2767,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include #include -#include -#include +struct stat; /* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */ struct buf { int x; }; FILE * (*rcsopen) (struct buf *, struct stat *, int); @@ -2863,7 +2880,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_CXX="$ac_tool_prefix$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -2907,7 +2924,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_CXX="$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3109,7 +3126,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_AR="${ac_tool_prefix}ar" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3149,7 +3166,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_AR="ar" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3201,7 +3218,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3241,7 +3258,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_RANLIB="ranlib" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3321,7 +3338,7 @@ case $as_dir/ in #(( # by default. for ac_prog in ginstall scoinst install; do for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then if test $ac_prog = install && grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then # AIX install. It has an incompatible calling convention. @@ -3422,7 +3439,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_stow="$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3518,7 +3535,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_RUN="$ac_tool_prefix$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3562,7 +3579,7 @@ do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do - if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_RUN="$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 @@ -3773,7 +3790,7 @@ do for ac_prog in grep ggrep; do for ac_exec_ext in '' $ac_executable_extensions; do ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext" - { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue + as_fn_executable_p "$ac_path_GREP" || continue # Check for GNU ac_path_GREP and select it if it is found. # Check for GNU $ac_path_GREP case `"$ac_path_GREP" --version 2>&1` in @@ -3839,7 +3856,7 @@ do for ac_prog in egrep; do for ac_exec_ext in '' $ac_executable_extensions; do ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext" - { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue + as_fn_executable_p "$ac_path_EGREP" || continue # Check for GNU ac_path_EGREP and select it if it is found. # Check for GNU $ac_path_EGREP case `"$ac_path_EGREP" --version 2>&1` in @@ -4358,6 +4375,51 @@ $as_echo "#define SOFTFLOAT_ENABLED /**/" >>confdefs.h + # Determine if this is a required or an optional subproject + + + + # Determine if there is a group with the same name + + + + # Create variations of the subproject name suitable for use as a CPP + # enabled define, a shell enabled variable, and a shell function + + + + + + + + + + + + # Add subproject to our running list + + subprojects="$subprojects spike" + + # Process the subproject appropriately. If enabled add it to the + # $enabled_subprojects running shell variable, set a + # SUBPROJECT_ENABLED C define, and include the appropriate + # 'subproject.ac'. + + + { $as_echo "$as_me:${as_lineno-$LINENO}: configuring default subproject : spike" >&5 +$as_echo "$as_me: configuring default subproject : spike" >&6;} + ac_config_files="$ac_config_files spike.mk:spike/spike.mk.in" + + enable_spike_sproj="yes" + subprojects_enabled="$subprojects_enabled spike" + +$as_echo "#define SPIKE_ENABLED /**/" >>confdefs.h + + + + + + # Output make variables @@ -4791,16 +4853,16 @@ if (echo >conf$$.file) 2>/dev/null; then # ... but there are two gotchas: # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail. # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable. - # In both cases, we have to default to `cp -p'. + # In both cases, we have to default to `cp -pR'. ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe || - as_ln_s='cp -p' + as_ln_s='cp -pR' elif ln conf$$.file conf$$ 2>/dev/null; then as_ln_s=ln else - as_ln_s='cp -p' + as_ln_s='cp -pR' fi else - as_ln_s='cp -p' + as_ln_s='cp -pR' fi rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file rmdir conf$$.dir 2>/dev/null @@ -4860,28 +4922,16 @@ else as_mkdir_p=false fi -if test -x / >/dev/null 2>&1; then - as_test_x='test -x' -else - if ls -dL / >/dev/null 2>&1; then - as_ls_L_option=L - else - as_ls_L_option= - fi - as_test_x=' - eval sh -c '\'' - if test -d "$1"; then - test -d "$1/."; - else - case $1 in #( - -*)set "./$1";; - esac; - case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #(( - ???[sx]*):;;*)false;;esac;fi - '\'' sh - ' -fi -as_executable_p=$as_test_x + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +as_test_x='test -x' +as_executable_p=as_fn_executable_p # Sed expression to map a string onto a valid CPP name. as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'" @@ -4903,7 +4953,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 # values after options handling. ac_log=" This file was extended by RISC-V ISA Simulator $as_me ?, which was -generated by GNU Autoconf 2.68. Invocation command line was +generated by GNU Autoconf 2.69. Invocation command line was CONFIG_FILES = $CONFIG_FILES CONFIG_HEADERS = $CONFIG_HEADERS @@ -4965,10 +5015,10 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`" ac_cs_version="\\ RISC-V ISA Simulator config.status ? -configured by $0, generated by GNU Autoconf 2.68, +configured by $0, generated by GNU Autoconf 2.69, with options \\"\$ac_cs_config\\" -Copyright (C) 2010 Free Software Foundation, Inc. +Copyright (C) 2012 Free Software Foundation, Inc. This config.status script is free software; the Free Software Foundation gives unlimited permission to copy, distribute and modify it." @@ -5057,7 +5107,7 @@ fi _ACEOF cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 if \$ac_cs_recheck; then - set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion + set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion shift \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6 CONFIG_SHELL='$SHELL' @@ -5089,6 +5139,7 @@ do "riscv.mk") CONFIG_FILES="$CONFIG_FILES riscv.mk:riscv/riscv.mk.in" ;; "hwacha.mk") CONFIG_FILES="$CONFIG_FILES hwacha.mk:hwacha/hwacha.mk.in" ;; "softfloat.mk") CONFIG_FILES="$CONFIG_FILES softfloat.mk:softfloat/softfloat.mk.in" ;; + "spike.mk") CONFIG_FILES="$CONFIG_FILES spike.mk:spike/spike.mk.in" ;; "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;; "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;; diff --git a/configure.ac b/configure.ac index bf35807..ce84dc5 100644 --- a/configure.ac +++ b/configure.ac @@ -82,7 +82,7 @@ AC_SUBST([CXXFLAGS],["-Wall -O2 -std=c++11"]) # The '*' suffix indicates an optional subproject. The '**' suffix # indicates an optional subproject which is also the name of a group. -MCPPBS_SUBPROJECTS([ riscv, hwacha, softfloat ]) +MCPPBS_SUBPROJECTS([ riscv, hwacha, softfloat, spike ]) #------------------------------------------------------------------------- # MCPPBS subproject groups diff --git a/riscv/disasm.cc b/riscv/disasm.cc deleted file mode 100644 index 31e4068..0000000 --- a/riscv/disasm.cc +++ /dev/null @@ -1,405 +0,0 @@ -// See LICENSE for license details. - -#include "disasm.h" -#include -#include -#include -#include -#include - -static const char* xpr[] = { - "zero", "ra", "s0", "s1", "s2", "s3", "s4", "s5", - "s6", "s7", "s8", "s9", "s10", "s11", "sp", "tp", - "v0", "v1", "a0", "a1", "a2", "a3", "a4", "a5", - "a6", "a7", "t0", "t1", "t2", "t3", "t4", "gp" -}; - -static const char* fpr[] = { - "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7", - "fs8", "fs9", "fs10", "fs11", "fs12", "fs13", "fs14", "fs15", - "fv0", "fv1", "fa0", "fa1", "fa2", "fa3", "fa4", "fa5", - "fa6", "fa7", "ft0", "ft1", "ft2", "ft3", "ft4", "ft5" -}; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return std::to_string((int)insn.i_imm()) + '(' + xpr[insn.rs1()] + ')'; - } -} load_address; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return std::to_string((int)insn.s_imm()) + '(' + xpr[insn.rs1()] + ')'; - } -} store_address; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return std::string("0(") + xpr[insn.rs1()] + ')'; - } -} amo_address; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return xpr[insn.rd()]; - } -} xrd; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return xpr[insn.rs1()]; - } -} xrs1; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return xpr[insn.rs2()]; - } -} xrs2; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return fpr[insn.rd()]; - } -} frd; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return fpr[insn.rs1()]; - } -} frs1; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return fpr[insn.rs2()]; - } -} frs2; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return fpr[insn.rs3()]; - } -} frs3; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - switch (insn.csr()) - { - #define DECLARE_CSR(name, num) case num: return #name; - #include "encoding.h" - #undef DECLARE_CSR - default: return "unknown"; - } - } -} csr; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return std::to_string((int)insn.i_imm()); - } -} imm; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - std::stringstream s; - s << std::hex << "0x" << ((uint32_t)insn.u_imm() >> 12); - return s.str(); - } -} bigimm; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - return std::to_string(insn.rs1()); - } -} zimm5; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - std::stringstream s; - int32_t target = insn.sb_imm(); - char sign = target >= 0 ? '+' : '-'; - s << "pc " << sign << ' ' << abs(target); - return s.str(); - } -} branch_target; - -struct : public arg_t { - std::string to_string(insn_t insn) const { - std::stringstream s; - int32_t target = insn.sb_imm(); - char sign = target >= 0 ? '+' : '-'; - s << "pc " << sign << std::hex << " 0x" << abs(target); - return s.str(); - } -} jump_target; - -std::string disassembler_t::disassemble(insn_t insn) -{ - const disasm_insn_t* disasm_insn = lookup(insn); - return disasm_insn ? disasm_insn->to_string(insn) : "unknown"; -} - -disassembler_t::disassembler_t() -{ - const uint32_t mask_rd = 0x1fUL << 7; - const uint32_t match_rd_ra = 1UL << 7; - const uint32_t mask_rs1 = 0x1fUL << 15; - const uint32_t match_rs1_ra = 1UL << 15; - const uint32_t mask_rs2 = 0x1fUL << 15; - const uint32_t mask_imm = 0xfffUL << 20; - - #define DECLARE_INSN(code, match, mask) \ - const uint32_t match_##code = match; \ - const uint32_t mask_##code = mask; - #include "encoding.h" - #undef DECLARE_INSN - - // explicit per-instruction disassembly - #define DISASM_INSN(name, code, extra, ...) \ - add_insn(new disasm_insn_t(name, match_##code, mask_##code | (extra), __VA_ARGS__)); - #define DEFINE_NOARG(code) \ - add_insn(new disasm_insn_t(#code, match_##code, mask_##code, {})); - #define DEFINE_RTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs1, &xrs2}) - #define DEFINE_ITYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs1, &imm}) - #define DEFINE_I0TYPE(name, code) DISASM_INSN(name, code, mask_rs1, {&xrd, &imm}) - #define DEFINE_I1TYPE(name, code) DISASM_INSN(name, code, mask_imm, {&xrd, &xrs1}) - #define DEFINE_I2TYPE(name, code) DISASM_INSN(name, code, mask_rd | mask_imm, {&xrs1}) - #define DEFINE_LTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &bigimm}) - #define DEFINE_BTYPE(code) DISASM_INSN(#code, code, 0, {&xrs1, &xrs2, &branch_target}) - #define DEFINE_B0TYPE(name, code) DISASM_INSN(name, code, mask_rs1 | mask_rs2, {&branch_target}) - #define DEFINE_B1TYPE(name, code) DISASM_INSN(name, code, mask_rs2, {&xrs1, &branch_target}) - #define DEFINE_XLOAD(code) DISASM_INSN(#code, code, 0, {&xrd, &load_address}) - #define DEFINE_XSTORE(code) DISASM_INSN(#code, code, 0, {&xrs2, &store_address}) - #define DEFINE_XAMO(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs2, &amo_address}) - #define DEFINE_FLOAD(code) DISASM_INSN(#code, code, 0, {&frd, &load_address}) - #define DEFINE_FSTORE(code) DISASM_INSN(#code, code, 0, {&frs2, &store_address}) - #define DEFINE_FRTYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1, &frs2}) - #define DEFINE_FR1TYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1}) - #define DEFINE_FR3TYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1, &frs2, &frs3}) - #define DEFINE_FXTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &frs1}) - #define DEFINE_XFTYPE(code) DISASM_INSN(#code, code, 0, {&frd, &xrs1}) - - DEFINE_XLOAD(lb) - DEFINE_XLOAD(lbu) - DEFINE_XLOAD(lh) - DEFINE_XLOAD(lhu) - DEFINE_XLOAD(lw) - DEFINE_XLOAD(lwu) - DEFINE_XLOAD(ld) - - DEFINE_XSTORE(sb) - DEFINE_XSTORE(sh) - DEFINE_XSTORE(sw) - DEFINE_XSTORE(sd) - - DEFINE_XAMO(amoadd_w) - DEFINE_XAMO(amoswap_w) - DEFINE_XAMO(amoand_w) - DEFINE_XAMO(amoor_w) - DEFINE_XAMO(amoxor_w) - DEFINE_XAMO(amomin_w) - DEFINE_XAMO(amomax_w) - DEFINE_XAMO(amominu_w) - DEFINE_XAMO(amomaxu_w) - DEFINE_XAMO(amoadd_d) - DEFINE_XAMO(amoswap_d) - DEFINE_XAMO(amoand_d) - DEFINE_XAMO(amoor_d) - DEFINE_XAMO(amoxor_d) - DEFINE_XAMO(amomin_d) - DEFINE_XAMO(amomax_d) - DEFINE_XAMO(amominu_d) - DEFINE_XAMO(amomaxu_d) - - DEFINE_XAMO(lr_w) - DEFINE_XAMO(sc_w) - DEFINE_XAMO(lr_d) - DEFINE_XAMO(sc_d) - - DEFINE_FLOAD(flw) - DEFINE_FLOAD(fld) - - DEFINE_FSTORE(fsw) - DEFINE_FSTORE(fsd) - - add_insn(new disasm_insn_t("j", match_jal, mask_jal | mask_rd, {&jump_target})); - add_insn(new disasm_insn_t("jal", match_jal | match_rd_ra, mask_jal | mask_rd, {&jump_target})); - add_insn(new disasm_insn_t("jal", match_jal, mask_jal, {&xrd, &jump_target})); - - DEFINE_B0TYPE("b", beq); - DEFINE_B1TYPE("beqz", beq); - DEFINE_B1TYPE("bnez", bne); - DEFINE_B1TYPE("bltz", blt); - DEFINE_B1TYPE("bgez", bge); - DEFINE_BTYPE(beq) - DEFINE_BTYPE(bne) - DEFINE_BTYPE(blt) - DEFINE_BTYPE(bge) - DEFINE_BTYPE(bltu) - DEFINE_BTYPE(bgeu) - - DEFINE_LTYPE(lui); - DEFINE_LTYPE(auipc); - - DEFINE_I2TYPE("jr", jalr); - add_insn(new disasm_insn_t("jalr", match_jalr | match_rd_ra, mask_jalr | mask_rd | mask_imm, {&xrs1})); - add_insn(new disasm_insn_t("ret", match_jalr | match_rs1_ra, mask_jalr | mask_rd | mask_rs1 | mask_imm, {})); - DEFINE_ITYPE(jalr); - - add_insn(new disasm_insn_t("nop", match_addi, mask_addi | mask_rd | mask_rs1 | mask_imm, {})); - DEFINE_I0TYPE("li", addi); - DEFINE_I1TYPE("move", addi); - DEFINE_ITYPE(addi); - DEFINE_ITYPE(slli); - DEFINE_ITYPE(slti); - DEFINE_ITYPE(sltiu); - DEFINE_ITYPE(xori); - DEFINE_ITYPE(srli); - DEFINE_ITYPE(srai); - DEFINE_ITYPE(ori); - DEFINE_ITYPE(andi); - DEFINE_ITYPE(addiw); - DEFINE_ITYPE(slliw); - DEFINE_ITYPE(srliw); - DEFINE_ITYPE(sraiw); - - DEFINE_RTYPE(add); - DEFINE_RTYPE(sub); - DEFINE_RTYPE(sll); - DEFINE_RTYPE(slt); - DEFINE_RTYPE(sltu); - DEFINE_RTYPE(xor); - DEFINE_RTYPE(srl); - DEFINE_RTYPE(sra); - DEFINE_RTYPE(or); - DEFINE_RTYPE(and); - DEFINE_RTYPE(mul); - DEFINE_RTYPE(mulh); - DEFINE_RTYPE(mulhu); - DEFINE_RTYPE(mulhsu); - DEFINE_RTYPE(div); - DEFINE_RTYPE(divu); - DEFINE_RTYPE(rem); - DEFINE_RTYPE(remu); - DEFINE_RTYPE(addw); - DEFINE_RTYPE(subw); - DEFINE_RTYPE(sllw); - DEFINE_RTYPE(srlw); - DEFINE_RTYPE(sraw); - DEFINE_RTYPE(mulw); - DEFINE_RTYPE(divw); - DEFINE_RTYPE(divuw); - DEFINE_RTYPE(remw); - DEFINE_RTYPE(remuw); - - DEFINE_NOARG(scall); - DEFINE_NOARG(sbreak); - DEFINE_NOARG(fence); - DEFINE_NOARG(fence_i); - - add_insn(new disasm_insn_t("csrr", match_csrrs, mask_csrrs | mask_rs1, {&xrd, &csr})); - add_insn(new disasm_insn_t("csrw", match_csrrw, mask_csrrw | mask_rd, {&csr, &xrs1})); - add_insn(new disasm_insn_t("csrrw", match_csrrw, mask_csrrw, {&xrd, &csr, &xrs1})); - add_insn(new disasm_insn_t("csrrs", match_csrrs, mask_csrrs, {&xrd, &csr, &xrs1})); - add_insn(new disasm_insn_t("csrrc", match_csrrc, mask_csrrc, {&xrd, &csr, &xrs1})); - add_insn(new disasm_insn_t("csrrwi", match_csrrwi, mask_csrrwi, {&xrd, &csr, &zimm5})); - add_insn(new disasm_insn_t("csrrsi", match_csrrsi, mask_csrrsi, {&xrd, &csr, &zimm5})); - add_insn(new disasm_insn_t("csrrci", match_csrrci, mask_csrrci, {&xrd, &csr, &zimm5})); - DEFINE_NOARG(sret) - - DEFINE_FRTYPE(fadd_s); - DEFINE_FRTYPE(fsub_s); - DEFINE_FRTYPE(fmul_s); - DEFINE_FRTYPE(fdiv_s); - DEFINE_FR1TYPE(fsqrt_s); - DEFINE_FRTYPE(fmin_s); - DEFINE_FRTYPE(fmax_s); - DEFINE_FR3TYPE(fmadd_s); - DEFINE_FR3TYPE(fmsub_s); - DEFINE_FR3TYPE(fnmadd_s); - DEFINE_FR3TYPE(fnmsub_s); - DEFINE_FRTYPE(fsgnj_s); - DEFINE_FRTYPE(fsgnjn_s); - DEFINE_FRTYPE(fsgnjx_s); - DEFINE_FR1TYPE(fcvt_s_d); - DEFINE_XFTYPE(fcvt_s_l); - DEFINE_XFTYPE(fcvt_s_lu); - DEFINE_XFTYPE(fcvt_s_w); - DEFINE_XFTYPE(fcvt_s_wu); - DEFINE_XFTYPE(fcvt_s_wu); - DEFINE_XFTYPE(fmv_s_x); - DEFINE_FXTYPE(fcvt_l_s); - DEFINE_FXTYPE(fcvt_lu_s); - DEFINE_FXTYPE(fcvt_w_s); - DEFINE_FXTYPE(fcvt_wu_s); - DEFINE_FXTYPE(fmv_x_s); - DEFINE_FXTYPE(feq_s); - DEFINE_FXTYPE(flt_s); - DEFINE_FXTYPE(fle_s); - - DEFINE_FRTYPE(fadd_d); - DEFINE_FRTYPE(fsub_d); - DEFINE_FRTYPE(fmul_d); - DEFINE_FRTYPE(fdiv_d); - DEFINE_FR1TYPE(fsqrt_d); - DEFINE_FRTYPE(fmin_d); - DEFINE_FRTYPE(fmax_d); - DEFINE_FR3TYPE(fmadd_d); - DEFINE_FR3TYPE(fmsub_d); - DEFINE_FR3TYPE(fnmadd_d); - DEFINE_FR3TYPE(fnmsub_d); - DEFINE_FRTYPE(fsgnj_d); - DEFINE_FRTYPE(fsgnjn_d); - DEFINE_FRTYPE(fsgnjx_d); - DEFINE_FR1TYPE(fcvt_d_s); - DEFINE_XFTYPE(fcvt_d_l); - DEFINE_XFTYPE(fcvt_d_lu); - DEFINE_XFTYPE(fcvt_d_w); - DEFINE_XFTYPE(fcvt_d_wu); - DEFINE_XFTYPE(fcvt_d_wu); - DEFINE_XFTYPE(fmv_d_x); - DEFINE_FXTYPE(fcvt_l_d); - DEFINE_FXTYPE(fcvt_lu_d); - DEFINE_FXTYPE(fcvt_w_d); - DEFINE_FXTYPE(fcvt_wu_d); - DEFINE_FXTYPE(fmv_x_d); - DEFINE_FXTYPE(feq_d); - DEFINE_FXTYPE(flt_d); - DEFINE_FXTYPE(fle_d); - - // provide a default disassembly for all instructions as a fallback - #define DECLARE_INSN(code, match, mask) \ - add_insn(new disasm_insn_t(#code " (args unknown)", match, mask, {})); - #include "encoding.h" - #undef DECLARE_INSN -} - -const disasm_insn_t* disassembler_t::lookup(insn_t insn) -{ - size_t idx = insn.bits() % HASH_SIZE; - for (size_t j = 0; j < chain[idx].size(); j++) - if(*chain[idx][j] == insn) - return chain[idx][j]; - - idx = HASH_SIZE; - for (size_t j = 0; j < chain[idx].size(); j++) - if(*chain[idx][j] == insn) - return chain[idx][j]; - - return NULL; -} - -void disassembler_t::add_insn(disasm_insn_t* insn) -{ - size_t idx = HASH_SIZE; - if (insn->get_mask() % HASH_SIZE == HASH_SIZE - 1) - idx = insn->get_match() % HASH_SIZE; - chain[idx].push_back(insn); -} - -disassembler_t::~disassembler_t() -{ - for (size_t i = 0; i < HASH_SIZE+1; i++) - for (size_t j = 0; j < chain[i].size(); j++) - delete chain[i][j]; -} diff --git a/riscv/extension.cc b/riscv/extension.cc index c6e1ec3..34d3f4f 100644 --- a/riscv/extension.cc +++ b/riscv/extension.cc @@ -1,7 +1,5 @@ #include "extension.h" #include "trap.h" -#include "dummy-rocc.h" -#include "hwacha.h" std::map>& extensions() { diff --git a/riscv/riscv.mk.in b/riscv/riscv.mk.in index 92adb8f..84723bd 100644 --- a/riscv/riscv.mk.in +++ b/riscv/riscv.mk.in @@ -3,13 +3,8 @@ get_opcode = $(shell grep ^DECLARE_INSN.*\\\<$(2)\\\> $(1) | sed 's/DECLARE_INSN riscv_subproject_deps = \ softfloat \ - hwacha \ riscv_install_prog_srcs = \ - spike.cc \ - riscv-dis.cc \ - xspike.cc \ - termios-xspike.cc \ riscv_hdrs = \ htif.h \ diff --git a/riscv/spike.cc b/riscv/spike.cc deleted file mode 100644 index da564b5..0000000 --- a/riscv/spike.cc +++ /dev/null @@ -1,72 +0,0 @@ -// See LICENSE for license details. - -#include "sim.h" -#include "htif.h" -#include "cachesim.h" -#include "extension.h" -#include -#include -#include -#include -#include -#include -#include - -static void help() -{ - fprintf(stderr, "usage: spike [host options] [target options]\n"); - fprintf(stderr, "Host Options:\n"); - fprintf(stderr, " -p Simulate processors\n"); - fprintf(stderr, " -m Provide MB of target memory\n"); - fprintf(stderr, " -d Interactive debug mode\n"); - fprintf(stderr, " -h Print this help message\n"); - fprintf(stderr, " --ic=:: Instantiate a cache model with S sets,\n"); - fprintf(stderr, " --dc=:: W ways, and B-byte blocks (with S and\n"); - fprintf(stderr, " --l2=:: B both powers of 2).\n"); - fprintf(stderr, " --extension= Specify RoCC Extension\n"); - exit(1); -} - -int main(int argc, char** argv) -{ - bool debug = false; - size_t nprocs = 1; - size_t mem_mb = 0; - std::unique_ptr ic; - std::unique_ptr dc; - std::unique_ptr l2; - std::function extension; - - option_parser_t parser; - parser.help(&help); - parser.option('h', 0, 0, [&](const char* s){help();}); - parser.option('d', 0, 0, [&](const char* s){debug = true;}); - parser.option('p', 0, 1, [&](const char* s){nprocs = atoi(s);}); - parser.option('m', 0, 1, [&](const char* s){mem_mb = atoi(s);}); - parser.option(0, "ic", 1, [&](const char* s){ic.reset(new icache_sim_t(s));}); - parser.option(0, "dc", 1, [&](const char* s){dc.reset(new dcache_sim_t(s));}); - parser.option(0, "l2", 1, [&](const char* s){l2.reset(cache_sim_t::construct(s, "L2$"));}); - parser.option(0, "extension", 1, [&](const char* s){ - if (!extensions().count(s)) - fprintf(stderr, "unknown extension %s!\n", s), exit(-1); - extension = extensions()[s]; - }); - - auto argv1 = parser.parse(argv); - if (!*argv1) - help(); - std::vector htif_args(argv1, (const char*const*)argv + argc); - sim_t s(nprocs, mem_mb, htif_args); - - if (ic && l2) ic->set_miss_handler(&*l2); - if (dc && l2) dc->set_miss_handler(&*l2); - for (size_t i = 0; i < nprocs; i++) - { - if (ic) s.get_core(i)->get_mmu()->register_memtracer(&*ic); - if (dc) s.get_core(i)->get_mmu()->register_memtracer(&*dc); - if (extension) s.get_core(i)->register_extension(extension()); - } - - s.set_debug(debug); - return s.run(); -} diff --git a/riscv/termios-xspike.cc b/riscv/termios-xspike.cc deleted file mode 100644 index e533933..0000000 --- a/riscv/termios-xspike.cc +++ /dev/null @@ -1,29 +0,0 @@ -// See LICENSE for license details. - -// termios-xspike sets up a canonical terminal and blocks forever. -// It allows us to send Ctrl-C etc. to the target machine. - -#include -#include -#include -#include -#include -#include - -int main() -{ - struct termios old_tios; - if (tcgetattr(0, &old_tios) < 0) - return -1; - - signal(SIGTERM, [](int) { }); - - struct termios new_tios = old_tios; - new_tios.c_lflag &= ~(ICANON | ECHO | ISIG); - if (tcsetattr(0, TCSANOW, &new_tios) < 0) - return -1; - - pause(); - - return tcsetattr(0, TCSANOW, &old_tios); -} diff --git a/riscv/xspike.cc b/riscv/xspike.cc deleted file mode 100644 index 4331dbe..0000000 --- a/riscv/xspike.cc +++ /dev/null @@ -1,102 +0,0 @@ -// See LICENSE for license details. - -// xspike forks an xterm for spike's target machine console, -// preserving the current terminal for debugging. - -#include -#include -#include -#include -#include -#include -#include -#include - -static pid_t fork_spike(int tty_fd, int argc, char** argv); -static pid_t fork_xterm(int* tty_fd); - -int main(int argc, char** argv) -{ - int tty_fd, wait_status, ret = -1; - pid_t xterm, spike; - - static bool signal_exit = false; - auto handle_signal = [](int) { signal_exit = true; }; - - if ((xterm = fork_xterm(&tty_fd)) < 0) - { - fprintf(stderr, "could not open xterm\n"); - goto out; - } - - signal(SIGINT, handle_signal); - - if ((spike = fork_spike(tty_fd, argc, argv)) < 0) - { - fprintf(stderr, "could not open spike\n"); - goto close_xterm; - } - - while ((ret = waitpid(spike, &wait_status, 0)) < 0) - if (signal_exit) - break; - - if (ret < 0) // signal_exit - kill(spike, SIGTERM); - else - ret = WIFEXITED(wait_status) ? WEXITSTATUS(wait_status) : -1; - -close_xterm: - kill(-xterm, SIGTERM); -out: - return ret; -} - -static pid_t fork_spike(int tty_fd, int argc, char** argv) -{ - pid_t pid = fork(); - if (pid < 0) - return -1; - - if (pid == 0) - { - if (dup2(tty_fd, STDIN_FILENO) < 0 || dup2(tty_fd, STDOUT_FILENO) < 0) - return -1; - execvp("spike", argv); - return -1; - } - - return pid; -} - -static pid_t fork_xterm(int* tty_fd) -{ - static const char cmd[] = "3>&1 xterm -title xspike -e sh -c 'tty 1>&3; termios-xspike'"; - - int fds[2]; - if (pipe(fds) < 0) - return -1; - - pid_t pid = fork(); - if (pid < 0) - return -1; - - if (pid == 0) - { - setpgid(0, 0); - if (dup2(fds[1], STDOUT_FILENO) < 0) - return -1; - execl("/bin/sh", "sh", "-c", cmd, NULL); - return -1; - } - - char tty[NAME_MAX]; - ssize_t ttylen = read(fds[0], tty, sizeof(tty)); - if (ttylen <= 1 || tty[ttylen-1] != '\n') - return -1; - tty[ttylen-1] = '\0'; - if ((*tty_fd = open(tty, O_RDWR)) < 0) - return -1; - - return pid; -} diff --git a/spike/disasm.cc b/spike/disasm.cc new file mode 100644 index 0000000..31e4068 --- /dev/null +++ b/spike/disasm.cc @@ -0,0 +1,405 @@ +// See LICENSE for license details. + +#include "disasm.h" +#include +#include +#include +#include +#include + +static const char* xpr[] = { + "zero", "ra", "s0", "s1", "s2", "s3", "s4", "s5", + "s6", "s7", "s8", "s9", "s10", "s11", "sp", "tp", + "v0", "v1", "a0", "a1", "a2", "a3", "a4", "a5", + "a6", "a7", "t0", "t1", "t2", "t3", "t4", "gp" +}; + +static const char* fpr[] = { + "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7", + "fs8", "fs9", "fs10", "fs11", "fs12", "fs13", "fs14", "fs15", + "fv0", "fv1", "fa0", "fa1", "fa2", "fa3", "fa4", "fa5", + "fa6", "fa7", "ft0", "ft1", "ft2", "ft3", "ft4", "ft5" +}; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return std::to_string((int)insn.i_imm()) + '(' + xpr[insn.rs1()] + ')'; + } +} load_address; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return std::to_string((int)insn.s_imm()) + '(' + xpr[insn.rs1()] + ')'; + } +} store_address; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return std::string("0(") + xpr[insn.rs1()] + ')'; + } +} amo_address; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return xpr[insn.rd()]; + } +} xrd; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return xpr[insn.rs1()]; + } +} xrs1; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return xpr[insn.rs2()]; + } +} xrs2; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return fpr[insn.rd()]; + } +} frd; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return fpr[insn.rs1()]; + } +} frs1; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return fpr[insn.rs2()]; + } +} frs2; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return fpr[insn.rs3()]; + } +} frs3; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + switch (insn.csr()) + { + #define DECLARE_CSR(name, num) case num: return #name; + #include "encoding.h" + #undef DECLARE_CSR + default: return "unknown"; + } + } +} csr; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return std::to_string((int)insn.i_imm()); + } +} imm; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + std::stringstream s; + s << std::hex << "0x" << ((uint32_t)insn.u_imm() >> 12); + return s.str(); + } +} bigimm; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + return std::to_string(insn.rs1()); + } +} zimm5; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + std::stringstream s; + int32_t target = insn.sb_imm(); + char sign = target >= 0 ? '+' : '-'; + s << "pc " << sign << ' ' << abs(target); + return s.str(); + } +} branch_target; + +struct : public arg_t { + std::string to_string(insn_t insn) const { + std::stringstream s; + int32_t target = insn.sb_imm(); + char sign = target >= 0 ? '+' : '-'; + s << "pc " << sign << std::hex << " 0x" << abs(target); + return s.str(); + } +} jump_target; + +std::string disassembler_t::disassemble(insn_t insn) +{ + const disasm_insn_t* disasm_insn = lookup(insn); + return disasm_insn ? disasm_insn->to_string(insn) : "unknown"; +} + +disassembler_t::disassembler_t() +{ + const uint32_t mask_rd = 0x1fUL << 7; + const uint32_t match_rd_ra = 1UL << 7; + const uint32_t mask_rs1 = 0x1fUL << 15; + const uint32_t match_rs1_ra = 1UL << 15; + const uint32_t mask_rs2 = 0x1fUL << 15; + const uint32_t mask_imm = 0xfffUL << 20; + + #define DECLARE_INSN(code, match, mask) \ + const uint32_t match_##code = match; \ + const uint32_t mask_##code = mask; + #include "encoding.h" + #undef DECLARE_INSN + + // explicit per-instruction disassembly + #define DISASM_INSN(name, code, extra, ...) \ + add_insn(new disasm_insn_t(name, match_##code, mask_##code | (extra), __VA_ARGS__)); + #define DEFINE_NOARG(code) \ + add_insn(new disasm_insn_t(#code, match_##code, mask_##code, {})); + #define DEFINE_RTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs1, &xrs2}) + #define DEFINE_ITYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs1, &imm}) + #define DEFINE_I0TYPE(name, code) DISASM_INSN(name, code, mask_rs1, {&xrd, &imm}) + #define DEFINE_I1TYPE(name, code) DISASM_INSN(name, code, mask_imm, {&xrd, &xrs1}) + #define DEFINE_I2TYPE(name, code) DISASM_INSN(name, code, mask_rd | mask_imm, {&xrs1}) + #define DEFINE_LTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &bigimm}) + #define DEFINE_BTYPE(code) DISASM_INSN(#code, code, 0, {&xrs1, &xrs2, &branch_target}) + #define DEFINE_B0TYPE(name, code) DISASM_INSN(name, code, mask_rs1 | mask_rs2, {&branch_target}) + #define DEFINE_B1TYPE(name, code) DISASM_INSN(name, code, mask_rs2, {&xrs1, &branch_target}) + #define DEFINE_XLOAD(code) DISASM_INSN(#code, code, 0, {&xrd, &load_address}) + #define DEFINE_XSTORE(code) DISASM_INSN(#code, code, 0, {&xrs2, &store_address}) + #define DEFINE_XAMO(code) DISASM_INSN(#code, code, 0, {&xrd, &xrs2, &amo_address}) + #define DEFINE_FLOAD(code) DISASM_INSN(#code, code, 0, {&frd, &load_address}) + #define DEFINE_FSTORE(code) DISASM_INSN(#code, code, 0, {&frs2, &store_address}) + #define DEFINE_FRTYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1, &frs2}) + #define DEFINE_FR1TYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1}) + #define DEFINE_FR3TYPE(code) DISASM_INSN(#code, code, 0, {&frd, &frs1, &frs2, &frs3}) + #define DEFINE_FXTYPE(code) DISASM_INSN(#code, code, 0, {&xrd, &frs1}) + #define DEFINE_XFTYPE(code) DISASM_INSN(#code, code, 0, {&frd, &xrs1}) + + DEFINE_XLOAD(lb) + DEFINE_XLOAD(lbu) + DEFINE_XLOAD(lh) + DEFINE_XLOAD(lhu) + DEFINE_XLOAD(lw) + DEFINE_XLOAD(lwu) + DEFINE_XLOAD(ld) + + DEFINE_XSTORE(sb) + DEFINE_XSTORE(sh) + DEFINE_XSTORE(sw) + DEFINE_XSTORE(sd) + + DEFINE_XAMO(amoadd_w) + DEFINE_XAMO(amoswap_w) + DEFINE_XAMO(amoand_w) + DEFINE_XAMO(amoor_w) + DEFINE_XAMO(amoxor_w) + DEFINE_XAMO(amomin_w) + DEFINE_XAMO(amomax_w) + DEFINE_XAMO(amominu_w) + DEFINE_XAMO(amomaxu_w) + DEFINE_XAMO(amoadd_d) + DEFINE_XAMO(amoswap_d) + DEFINE_XAMO(amoand_d) + DEFINE_XAMO(amoor_d) + DEFINE_XAMO(amoxor_d) + DEFINE_XAMO(amomin_d) + DEFINE_XAMO(amomax_d) + DEFINE_XAMO(amominu_d) + DEFINE_XAMO(amomaxu_d) + + DEFINE_XAMO(lr_w) + DEFINE_XAMO(sc_w) + DEFINE_XAMO(lr_d) + DEFINE_XAMO(sc_d) + + DEFINE_FLOAD(flw) + DEFINE_FLOAD(fld) + + DEFINE_FSTORE(fsw) + DEFINE_FSTORE(fsd) + + add_insn(new disasm_insn_t("j", match_jal, mask_jal | mask_rd, {&jump_target})); + add_insn(new disasm_insn_t("jal", match_jal | match_rd_ra, mask_jal | mask_rd, {&jump_target})); + add_insn(new disasm_insn_t("jal", match_jal, mask_jal, {&xrd, &jump_target})); + + DEFINE_B0TYPE("b", beq); + DEFINE_B1TYPE("beqz", beq); + DEFINE_B1TYPE("bnez", bne); + DEFINE_B1TYPE("bltz", blt); + DEFINE_B1TYPE("bgez", bge); + DEFINE_BTYPE(beq) + DEFINE_BTYPE(bne) + DEFINE_BTYPE(blt) + DEFINE_BTYPE(bge) + DEFINE_BTYPE(bltu) + DEFINE_BTYPE(bgeu) + + DEFINE_LTYPE(lui); + DEFINE_LTYPE(auipc); + + DEFINE_I2TYPE("jr", jalr); + add_insn(new disasm_insn_t("jalr", match_jalr | match_rd_ra, mask_jalr | mask_rd | mask_imm, {&xrs1})); + add_insn(new disasm_insn_t("ret", match_jalr | match_rs1_ra, mask_jalr | mask_rd | mask_rs1 | mask_imm, {})); + DEFINE_ITYPE(jalr); + + add_insn(new disasm_insn_t("nop", match_addi, mask_addi | mask_rd | mask_rs1 | mask_imm, {})); + DEFINE_I0TYPE("li", addi); + DEFINE_I1TYPE("move", addi); + DEFINE_ITYPE(addi); + DEFINE_ITYPE(slli); + DEFINE_ITYPE(slti); + DEFINE_ITYPE(sltiu); + DEFINE_ITYPE(xori); + DEFINE_ITYPE(srli); + DEFINE_ITYPE(srai); + DEFINE_ITYPE(ori); + DEFINE_ITYPE(andi); + DEFINE_ITYPE(addiw); + DEFINE_ITYPE(slliw); + DEFINE_ITYPE(srliw); + DEFINE_ITYPE(sraiw); + + DEFINE_RTYPE(add); + DEFINE_RTYPE(sub); + DEFINE_RTYPE(sll); + DEFINE_RTYPE(slt); + DEFINE_RTYPE(sltu); + DEFINE_RTYPE(xor); + DEFINE_RTYPE(srl); + DEFINE_RTYPE(sra); + DEFINE_RTYPE(or); + DEFINE_RTYPE(and); + DEFINE_RTYPE(mul); + DEFINE_RTYPE(mulh); + DEFINE_RTYPE(mulhu); + DEFINE_RTYPE(mulhsu); + DEFINE_RTYPE(div); + DEFINE_RTYPE(divu); + DEFINE_RTYPE(rem); + DEFINE_RTYPE(remu); + DEFINE_RTYPE(addw); + DEFINE_RTYPE(subw); + DEFINE_RTYPE(sllw); + DEFINE_RTYPE(srlw); + DEFINE_RTYPE(sraw); + DEFINE_RTYPE(mulw); + DEFINE_RTYPE(divw); + DEFINE_RTYPE(divuw); + DEFINE_RTYPE(remw); + DEFINE_RTYPE(remuw); + + DEFINE_NOARG(scall); + DEFINE_NOARG(sbreak); + DEFINE_NOARG(fence); + DEFINE_NOARG(fence_i); + + add_insn(new disasm_insn_t("csrr", match_csrrs, mask_csrrs | mask_rs1, {&xrd, &csr})); + add_insn(new disasm_insn_t("csrw", match_csrrw, mask_csrrw | mask_rd, {&csr, &xrs1})); + add_insn(new disasm_insn_t("csrrw", match_csrrw, mask_csrrw, {&xrd, &csr, &xrs1})); + add_insn(new disasm_insn_t("csrrs", match_csrrs, mask_csrrs, {&xrd, &csr, &xrs1})); + add_insn(new disasm_insn_t("csrrc", match_csrrc, mask_csrrc, {&xrd, &csr, &xrs1})); + add_insn(new disasm_insn_t("csrrwi", match_csrrwi, mask_csrrwi, {&xrd, &csr, &zimm5})); + add_insn(new disasm_insn_t("csrrsi", match_csrrsi, mask_csrrsi, {&xrd, &csr, &zimm5})); + add_insn(new disasm_insn_t("csrrci", match_csrrci, mask_csrrci, {&xrd, &csr, &zimm5})); + DEFINE_NOARG(sret) + + DEFINE_FRTYPE(fadd_s); + DEFINE_FRTYPE(fsub_s); + DEFINE_FRTYPE(fmul_s); + DEFINE_FRTYPE(fdiv_s); + DEFINE_FR1TYPE(fsqrt_s); + DEFINE_FRTYPE(fmin_s); + DEFINE_FRTYPE(fmax_s); + DEFINE_FR3TYPE(fmadd_s); + DEFINE_FR3TYPE(fmsub_s); + DEFINE_FR3TYPE(fnmadd_s); + DEFINE_FR3TYPE(fnmsub_s); + DEFINE_FRTYPE(fsgnj_s); + DEFINE_FRTYPE(fsgnjn_s); + DEFINE_FRTYPE(fsgnjx_s); + DEFINE_FR1TYPE(fcvt_s_d); + DEFINE_XFTYPE(fcvt_s_l); + DEFINE_XFTYPE(fcvt_s_lu); + DEFINE_XFTYPE(fcvt_s_w); + DEFINE_XFTYPE(fcvt_s_wu); + DEFINE_XFTYPE(fcvt_s_wu); + DEFINE_XFTYPE(fmv_s_x); + DEFINE_FXTYPE(fcvt_l_s); + DEFINE_FXTYPE(fcvt_lu_s); + DEFINE_FXTYPE(fcvt_w_s); + DEFINE_FXTYPE(fcvt_wu_s); + DEFINE_FXTYPE(fmv_x_s); + DEFINE_FXTYPE(feq_s); + DEFINE_FXTYPE(flt_s); + DEFINE_FXTYPE(fle_s); + + DEFINE_FRTYPE(fadd_d); + DEFINE_FRTYPE(fsub_d); + DEFINE_FRTYPE(fmul_d); + DEFINE_FRTYPE(fdiv_d); + DEFINE_FR1TYPE(fsqrt_d); + DEFINE_FRTYPE(fmin_d); + DEFINE_FRTYPE(fmax_d); + DEFINE_FR3TYPE(fmadd_d); + DEFINE_FR3TYPE(fmsub_d); + DEFINE_FR3TYPE(fnmadd_d); + DEFINE_FR3TYPE(fnmsub_d); + DEFINE_FRTYPE(fsgnj_d); + DEFINE_FRTYPE(fsgnjn_d); + DEFINE_FRTYPE(fsgnjx_d); + DEFINE_FR1TYPE(fcvt_d_s); + DEFINE_XFTYPE(fcvt_d_l); + DEFINE_XFTYPE(fcvt_d_lu); + DEFINE_XFTYPE(fcvt_d_w); + DEFINE_XFTYPE(fcvt_d_wu); + DEFINE_XFTYPE(fcvt_d_wu); + DEFINE_XFTYPE(fmv_d_x); + DEFINE_FXTYPE(fcvt_l_d); + DEFINE_FXTYPE(fcvt_lu_d); + DEFINE_FXTYPE(fcvt_w_d); + DEFINE_FXTYPE(fcvt_wu_d); + DEFINE_FXTYPE(fmv_x_d); + DEFINE_FXTYPE(feq_d); + DEFINE_FXTYPE(flt_d); + DEFINE_FXTYPE(fle_d); + + // provide a default disassembly for all instructions as a fallback + #define DECLARE_INSN(code, match, mask) \ + add_insn(new disasm_insn_t(#code " (args unknown)", match, mask, {})); + #include "encoding.h" + #undef DECLARE_INSN +} + +const disasm_insn_t* disassembler_t::lookup(insn_t insn) +{ + size_t idx = insn.bits() % HASH_SIZE; + for (size_t j = 0; j < chain[idx].size(); j++) + if(*chain[idx][j] == insn) + return chain[idx][j]; + + idx = HASH_SIZE; + for (size_t j = 0; j < chain[idx].size(); j++) + if(*chain[idx][j] == insn) + return chain[idx][j]; + + return NULL; +} + +void disassembler_t::add_insn(disasm_insn_t* insn) +{ + size_t idx = HASH_SIZE; + if (insn->get_mask() % HASH_SIZE == HASH_SIZE - 1) + idx = insn->get_match() % HASH_SIZE; + chain[idx].push_back(insn); +} + +disassembler_t::~disassembler_t() +{ + for (size_t i = 0; i < HASH_SIZE+1; i++) + for (size_t j = 0; j < chain[i].size(); j++) + delete chain[i][j]; +} diff --git a/spike/extensions.cc b/spike/extensions.cc new file mode 100644 index 0000000..53b62a1 --- /dev/null +++ b/spike/extensions.cc @@ -0,0 +1 @@ +#include "hwacha.h" diff --git a/spike/spike.ac b/spike/spike.ac new file mode 100644 index 0000000..e69de29 diff --git a/spike/spike.cc b/spike/spike.cc new file mode 100644 index 0000000..da564b5 --- /dev/null +++ b/spike/spike.cc @@ -0,0 +1,72 @@ +// See LICENSE for license details. + +#include "sim.h" +#include "htif.h" +#include "cachesim.h" +#include "extension.h" +#include +#include +#include +#include +#include +#include +#include + +static void help() +{ + fprintf(stderr, "usage: spike [host options] [target options]\n"); + fprintf(stderr, "Host Options:\n"); + fprintf(stderr, " -p Simulate processors\n"); + fprintf(stderr, " -m Provide MB of target memory\n"); + fprintf(stderr, " -d Interactive debug mode\n"); + fprintf(stderr, " -h Print this help message\n"); + fprintf(stderr, " --ic=:: Instantiate a cache model with S sets,\n"); + fprintf(stderr, " --dc=:: W ways, and B-byte blocks (with S and\n"); + fprintf(stderr, " --l2=:: B both powers of 2).\n"); + fprintf(stderr, " --extension= Specify RoCC Extension\n"); + exit(1); +} + +int main(int argc, char** argv) +{ + bool debug = false; + size_t nprocs = 1; + size_t mem_mb = 0; + std::unique_ptr ic; + std::unique_ptr dc; + std::unique_ptr l2; + std::function extension; + + option_parser_t parser; + parser.help(&help); + parser.option('h', 0, 0, [&](const char* s){help();}); + parser.option('d', 0, 0, [&](const char* s){debug = true;}); + parser.option('p', 0, 1, [&](const char* s){nprocs = atoi(s);}); + parser.option('m', 0, 1, [&](const char* s){mem_mb = atoi(s);}); + parser.option(0, "ic", 1, [&](const char* s){ic.reset(new icache_sim_t(s));}); + parser.option(0, "dc", 1, [&](const char* s){dc.reset(new dcache_sim_t(s));}); + parser.option(0, "l2", 1, [&](const char* s){l2.reset(cache_sim_t::construct(s, "L2$"));}); + parser.option(0, "extension", 1, [&](const char* s){ + if (!extensions().count(s)) + fprintf(stderr, "unknown extension %s!\n", s), exit(-1); + extension = extensions()[s]; + }); + + auto argv1 = parser.parse(argv); + if (!*argv1) + help(); + std::vector htif_args(argv1, (const char*const*)argv + argc); + sim_t s(nprocs, mem_mb, htif_args); + + if (ic && l2) ic->set_miss_handler(&*l2); + if (dc && l2) dc->set_miss_handler(&*l2); + for (size_t i = 0; i < nprocs; i++) + { + if (ic) s.get_core(i)->get_mmu()->register_memtracer(&*ic); + if (dc) s.get_core(i)->get_mmu()->register_memtracer(&*dc); + if (extension) s.get_core(i)->register_extension(extension()); + } + + s.set_debug(debug); + return s.run(); +} diff --git a/spike/spike.mk.in b/spike/spike.mk.in new file mode 100644 index 0000000..7534e86 --- /dev/null +++ b/spike/spike.mk.in @@ -0,0 +1,15 @@ +spike_subproject_deps = \ + softfloat \ + riscv \ + hwacha \ + +spike_install_prog_srcs = \ + spike.cc \ + riscv-dis.cc \ + xspike.cc \ + termios-xspike.cc \ + +spike_hdrs = \ + +spike_srcs = \ + extensions.cc \ diff --git a/spike/termios-xspike.cc b/spike/termios-xspike.cc new file mode 100644 index 0000000..e533933 --- /dev/null +++ b/spike/termios-xspike.cc @@ -0,0 +1,29 @@ +// See LICENSE for license details. + +// termios-xspike sets up a canonical terminal and blocks forever. +// It allows us to send Ctrl-C etc. to the target machine. + +#include +#include +#include +#include +#include +#include + +int main() +{ + struct termios old_tios; + if (tcgetattr(0, &old_tios) < 0) + return -1; + + signal(SIGTERM, [](int) { }); + + struct termios new_tios = old_tios; + new_tios.c_lflag &= ~(ICANON | ECHO | ISIG); + if (tcsetattr(0, TCSANOW, &new_tios) < 0) + return -1; + + pause(); + + return tcsetattr(0, TCSANOW, &old_tios); +} diff --git a/spike/xspike.cc b/spike/xspike.cc new file mode 100644 index 0000000..4331dbe --- /dev/null +++ b/spike/xspike.cc @@ -0,0 +1,102 @@ +// See LICENSE for license details. + +// xspike forks an xterm for spike's target machine console, +// preserving the current terminal for debugging. + +#include +#include +#include +#include +#include +#include +#include +#include + +static pid_t fork_spike(int tty_fd, int argc, char** argv); +static pid_t fork_xterm(int* tty_fd); + +int main(int argc, char** argv) +{ + int tty_fd, wait_status, ret = -1; + pid_t xterm, spike; + + static bool signal_exit = false; + auto handle_signal = [](int) { signal_exit = true; }; + + if ((xterm = fork_xterm(&tty_fd)) < 0) + { + fprintf(stderr, "could not open xterm\n"); + goto out; + } + + signal(SIGINT, handle_signal); + + if ((spike = fork_spike(tty_fd, argc, argv)) < 0) + { + fprintf(stderr, "could not open spike\n"); + goto close_xterm; + } + + while ((ret = waitpid(spike, &wait_status, 0)) < 0) + if (signal_exit) + break; + + if (ret < 0) // signal_exit + kill(spike, SIGTERM); + else + ret = WIFEXITED(wait_status) ? WEXITSTATUS(wait_status) : -1; + +close_xterm: + kill(-xterm, SIGTERM); +out: + return ret; +} + +static pid_t fork_spike(int tty_fd, int argc, char** argv) +{ + pid_t pid = fork(); + if (pid < 0) + return -1; + + if (pid == 0) + { + if (dup2(tty_fd, STDIN_FILENO) < 0 || dup2(tty_fd, STDOUT_FILENO) < 0) + return -1; + execvp("spike", argv); + return -1; + } + + return pid; +} + +static pid_t fork_xterm(int* tty_fd) +{ + static const char cmd[] = "3>&1 xterm -title xspike -e sh -c 'tty 1>&3; termios-xspike'"; + + int fds[2]; + if (pipe(fds) < 0) + return -1; + + pid_t pid = fork(); + if (pid < 0) + return -1; + + if (pid == 0) + { + setpgid(0, 0); + if (dup2(fds[1], STDOUT_FILENO) < 0) + return -1; + execl("/bin/sh", "sh", "-c", cmd, NULL); + return -1; + } + + char tty[NAME_MAX]; + ssize_t ttylen = read(fds[0], tty, sizeof(tty)); + if (ttylen <= 1 || tty[ttylen-1] != '\n') + return -1; + tty[ttylen-1] = '\0'; + if ((*tty_fd = open(tty, O_RDWR)) < 0) + return -1; + + return pid; +}