forked from Imagelibrary/binutils-gdb
sim: overhaul & unify endian settings management
The m4 macro has 2 args: the "wire" settings (which represents the hardwired port behavior), and the default settings (which are used if nothing else is specified). If none are specified, the arch is expected to support both, and the value will be probed based on the user runtime options or the input program. Only two arches today set the default value (bpf & mips). We can probably let this go as it only shows up in one scenario: the sim is invoked, but with no inputs, and no user endian selection. This means bpf will not behave like the other arches: an error is shown and forces the user to make a choice. If an input program is used though, we'll still switch the default to that. This allows us to remove the WITH_DEFAULT_TARGET_BYTE_ORDER setting. For the ports that set a "wire" endian, move it to the runtime init of the respective sim_open calls. This allows us to change the WITH_TARGET_BYTE_ORDER to purely a user-selected configure setting if they want to force a specific endianness. With all the endian logic moved to runtime selection, we can move the configure call up to the common dir so we only process it once across all ports. The ppc arch was picking the wire endian based on the target used, but since we weren't doing that for other biendian arches, we can let this go too. We'll rely on the input selecting the endian, or make the user decide.
This commit is contained in:
Mike Frysinger
74
sim/mips/configure
vendored
74
sim/mips/configure
vendored
@@ -633,7 +633,6 @@ ac_subst_vars='LTLIBOBJS
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LIBOBJS
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sim_default_model
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sim_scache
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sim_alignment
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cgen_breaks
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XMKMF
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sim_multi_obj
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@@ -764,7 +763,6 @@ sim_hw
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sim_hw_objs
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sim_hw_cflags
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sim_float
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sim_endian
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sim_bitsize'
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ac_subst_files=''
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ac_user_opts='
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@@ -783,7 +781,6 @@ enable_werror
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enable_build_warnings
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enable_sim_build_warnings
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enable_sim_reserved_bits
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enable_sim_endian
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enable_sim_bitsize
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enable_sim_float
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enable_sim_hardware
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@@ -1439,8 +1436,6 @@ Optional Features:
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--enable-sim-reserved-bits
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Specify whether to check reserved bits in
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instruction
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--enable-sim-endian=endian
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Specify target byte endian orientation
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--enable-sim-bitsize=N Specify target bitsize (32 or 64)
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--enable-sim-float Specify that the target processor has floating point
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hardware
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@@ -10770,7 +10765,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 10773 "configure"
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#line 10768 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@@ -10876,7 +10871,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 10879 "configure"
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#line 10874 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@@ -11304,69 +11299,6 @@ esac
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#
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# Select the byte order of the target
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#
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mips_endian=
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default_endian=
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case "${target}" in
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mips64el*-*-*) mips_endian=LITTLE ;;
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mips64vr*el-*-*) default_endian=LITTLE ;;
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mips64*-*-*) default_endian=BIG ;;
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mips16*-*-*) default_endian=BIG ;;
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mipsisa32*-*-*) default_endian=BIG ;;
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mipsisa64*-*-*) default_endian=BIG ;;
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mips*-*-*) default_endian=BIG ;;
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*) default_endian=BIG ;;
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esac
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wire_endian="$mips_endian"
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default_endian="$default_endian"
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# Check whether --enable-sim-endian was given.
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if test "${enable_sim_endian+set}" = set; then :
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enableval=$enable_sim_endian; case "${enableval}" in
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b*|B*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_BIG";;
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l*|L*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_LITTLE";;
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yes) if test x"$wire_endian" != x; then
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sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
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else
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if test x"$default_endian" != x; then
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sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
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else
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echo "No hard-wired endian for target $target" 1>&6
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sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_UNKNOWN"
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fi
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fi;;
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no) if test x"$default_endian" != x; then
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sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
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else
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if test x"$wire_endian" != x; then
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sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
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else
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echo "No default endian for target $target" 1>&6
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sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_UNKNOWN"
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fi
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fi;;
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*) as_fn_error $? "\"Unknown value $enableval for --enable-sim-endian\"" "$LINENO" 5; sim_endian="";;
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esac
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if test x"$silent" != x"yes" && test x"$sim_endian" != x""; then
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echo "Setting endian flags = $sim_endian" 6>&1
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fi
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else
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if test x"$default_endian" != x; then
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sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
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else
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if test x"$wire_endian" != x; then
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sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
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else
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sim_endian=
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fi
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fi
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fi
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#
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# Select the bitsize of the target
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#
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@@ -12195,8 +12127,6 @@ ac_config_commands="$ac_config_commands stamp-h"
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cat >confcache <<\_ACEOF
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# This file is a shell script that caches the results of configure
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# tests run on this system so they can be shared between configure
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