mirror of
https://github.com/kanjitalk755/macemu.git
synced 2025-01-12 16:30:44 +00:00
Add linker scripts for correct REAL_ADDRESSING support
This commit is contained in:
gbeauche
parent
077a232acc
commit
2ef9d6e708
@ -1096,6 +1096,35 @@ fi
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dnl A dummy program that returns always true
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AC_PATH_PROG([BLESS], "true")
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dnl Check for linker script support
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case $target_os:$target_cpu in
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linux*:i?86) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";;
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linux*:x86_64) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-x86_64.ld";;
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esac
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if [[ -n "$LINKER_SCRIPT_FLAGS" ]]; then
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AC_CACHE_CHECK([whether linker script is usable],
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ac_cv_linker_script_works, [
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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saved_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS $LINKER_SCRIPT_FLAGS"
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AC_TRY_RUN(
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[int main() {if ((char *)&main < (char *)0x70000000) return 1;}],
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[ac_cv_linker_script_works=yes],
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[ac_cv_linker_script_works=no],
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dnl When cross-compiling, assume it works
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[ac_cv_linker_script_works="guessing yes"]
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)
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AC_LANG_RESTORE
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if [[ "$ac_cv_linker_script_works" = "no" ]]; then
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LDFLAGS="$saved_LDFLAGS"
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LINKER_SCRIPT_FLAGS=""
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fi
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])
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fi
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AC_TRANSLATE_DEFINE(HAVE_LINKER_SCRIPT, "$ac_cv_linker_script_works",
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[Define if there is a linker script to relocate the executable above 0x70000000.])
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dnl Determine the addressing mode to use
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if [[ "x$WANT_NATIVE_M68K" = "xyes" ]]; then
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ADDRESSING_MODE="real"
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137
BasiliskII/src/Unix/ldscripts/linux-i386.ld
Normal file
137
BasiliskII/src/Unix/ldscripts/linux-i386.ld
Normal file
@ -0,0 +1,137 @@
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OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
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OUTPUT_ARCH(i386)
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SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib);
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ENTRY(_start)
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SECTIONS
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171
BasiliskII/src/Unix/ldscripts/linux-x86_64.ld
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171
BasiliskII/src/Unix/ldscripts/linux-x86_64.ld
Normal file
@ -0,0 +1,171 @@
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/* Default linker script, for normal executables */
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OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
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OUTPUT_ARCH(i386:x86-64)
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ENTRY(_start)
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SEARCH_DIR("/lib64"); SEARCH_DIR("/usr/lib64"); SEARCH_DIR("/usr/local/lib64");
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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could instead move the label definition inside the section, but
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