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Introduce cosmocc flags -mdbg -mtiny -moptlinux

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The cosmocc.zip toolchain will now include four builds of the libcosmo.a
runtime libraries. You can pass the -mdbg flag if you want to debug your
cosmopolitan runtime. You can pass the -moptlinux flag if you don't want
windows code lurking in your binary. See tool/cosmocc/README.md for more
details on how these flags may be used and their important implications.
This commit is contained in:
Justine Tunney 2024-07-26 05:10:25 -07:00
parent 59692b0882
commit 642e9cb91a
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
22 changed files with 404 additions and 56 deletions
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48
tool/cosmocc/bin/cosmocross
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@ -59,13 +59,33 @@ if [ x"$ARCH" = x"$PROG" ]; then
fatal_error "cosmocross must be run via cross compiler"
fi
for x; do
if [ x"$x" = x"-mtiny" ]; then
MODE=tiny
elif [ x"$x" = x"-mdbg" ]; then
MODE=dbg
elif [ x"$x" = x"-moptlinux" ]; then
MODE=optlinux
fi
done
if [ x"$MODE" = x"dbg" ]; then
LIB="$BIN/../$ARCH-linux-cosmo/lib/dbg"
elif [ x"$MODE" = x"tiny" ]; then
LIB="$BIN/../$ARCH-linux-cosmo/lib/tiny"
elif [ x"$MODE" = x"optlinux" ]; then
LIB="$BIN/../$ARCH-linux-cosmo/lib/optlinux"
else
LIB="$BIN/../$ARCH-linux-cosmo/lib"
fi
CC="$BIN/$ARCH-linux-cosmo-gcc"
CRT="$BIN/../$ARCH-linux-cosmo/lib/crt.o"
CRT="$LIB/crt.o"
LDLIBS="-lcosmo"
if [ -z "$COSMOS" ]; then
LDFLAGS="$LDFLAGS -L$BIN/../$ARCH-linux-cosmo/lib"
LDFLAGS="$LDFLAGS -L$LIB -L$BIN/../$ARCH-linux-cosmo/lib"
else
LDFLAGS="$LDFLAGS -L$COSMOS/lib -L$BIN/../$ARCH-linux-cosmo/lib"
LDFLAGS="$LDFLAGS -L$COSMOS/lib -L$LIB -L$BIN/../$ARCH-linux-cosmo/lib"
CPPFLAGS="$CPPFLAGS -I$COSMOS/include"
fi
if [ x"$PROG" != x"${PROG%++}" ]; then
@ -80,16 +100,20 @@ fi
PAGESZ=4096
if [ x"$ARCH" = x"x86_64" ]; then
OBJCOPYFLAGS="-S -O binary"
CRT="$BIN/../$ARCH-linux-cosmo/lib/ape-no-modify-self.o $CRT"
CPPFLAGS="$CPPFLAGS -mno-red-zone"
CRT="$LIB/ape-no-modify-self.o $CRT"
CFLAGS="$CFLAGS -mno-tls-direct-seg-refs"
LDFLAGS="$LDFLAGS -Wl,-T,$BIN/../$ARCH-linux-cosmo/lib/ape.lds"
LDFLAGS="$LDFLAGS -Wl,-T,$LIB/ape.lds"
if [ x"$MODE" = x"optlinux" ]; then
CPPFLAGS="$CPPFLAGS -mred-zone"
else
CPPFLAGS="$CPPFLAGS -mno-red-zone"
fi
elif [ x"$ARCH" = x"aarch64" ]; then
OBJCOPYFLAGS="-S"
PAGESZ=16384
CPPFLAGS="$CPPFLAGS -fsigned-char"
CFLAGS="$CFLAGS -ffixed-x18 -ffixed-x28 -mno-outline-atomics"
LDFLAGS="$LDFLAGS -Wl,-T,$BIN/../$ARCH-linux-cosmo/lib/aarch64.lds"
LDFLAGS="$LDFLAGS -Wl,-T,$LIB/aarch64.lds"
else
fatal_error "$ARCH: unsupported architecture"
fi
@ -142,6 +166,12 @@ for x; do
elif [ x"$x" = x"-mcosmo" ]; then
CPPFLAGS="$CPPFLAGS -D_COSMO_SOURCE"
continue
elif [ x"$x" = x"-mdbg" ]; then
continue
elif [ x"$x" = x"-mtiny" ]; then
continue
elif [ x"$x" = x"-moptlinux" ]; then
continue
elif [ x"$x" != x"${x#-o}" ]; then
OUTPUT=${x#-o}
elif [ x"$x" = x"-fpic" ]; then
@ -189,6 +219,7 @@ fi
# support --ftrace unless optimizing for size
if [ x"$OPT" != x"-Os" ] && # $OPT != -Os
[ x"$MODE" != x"optlinux" ] && # $MODE not optlinux
[ x"${MODE%tiny}" = x"${MODE}" ]; then # $MODE not in (tiny, aarch64-tiny)
if [ x"$ARCH" = x"x86_64" ]; then
CFLAGS="$CFLAGS -fpatchable-function-entry=18,16 -fno-inline-functions-called-once"
@ -199,10 +230,11 @@ fi
# maximize frame pointers unless optimizing for size
if [ x"$OPT" != x"-Os" ] && # $OPT != "-Os"
[ x"$MODE" != x"optlinux" ] && # $MODE not optlinux
[ x"$MODE" != x"${MODE%tiny}" ]; then # endswith($MODE, "tiny")
CFLAGS="$CFLAGS -fno-optimize-sibling-calls -mno-omit-leaf-frame-pointer"
fi
if [ x"$OPT" != x"-O3" ]; then
if [ x"$OPT" != x"-O3" ] && [ x"$MODE" != x"optlinux" ]; then
CFLAGS="$CFLAGS -fno-schedule-insns2"
fi