c8a0e2f4c6
This commit finalizes support for cross compilation. The tools directory are all links to the actual tools and are built on the host system to build Minix. build.sh is the work horse that takes care of all environment settings. It's slightly adjusted for Minix. The /usr/src/Makefile has additional targets needed for cross compilation.
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
#if 0 /* $NetBSD$ */
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#
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# This is Solaris x86 specific GCC run-time environment patch, which
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# makes it possible to reliably deploy .init snippets. Trouble is that
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# Solaris linker erroneously pads .init segment with zeros [instead of
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# nops], which is bound to SEGV early upon program start-up. This bug
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# was recognized by GCC team [it is mentioned in source code], but
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# workaround apparently and obviously erroneously slipped away in some
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# newer GCC release. This patch compensates for this mishap by dropping
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# modified values-X*.o into GCC installation tree. Object modules in
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# question are normally provided by Sun and linked prior crtbegin.o.
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# Modified versions are additionally crafted with custom .init segment,
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# which does some magic:-)
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# <appro@fy.chalmers.se>
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set -e
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gcc=gcc
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if [[ "x$1" = x*gcc ]]; then
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gcc=$1; shift
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fi
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gcc_dir=`${gcc} "$@" -print-libgcc-file-name`
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gcc_dir=${gcc_dir%/*} #*/
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set -x
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${gcc} "$@" -c -o $gcc_dir/values-Xa.o -DXa $0
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${gcc} "$@" -c -o $gcc_dir/values-Xc.o -DXc $0
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${gcc} "$@" -c -o $gcc_dir/values-Xt.o -DXt $0
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exit
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#endif
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#include <math.h>
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#if defined(Xa)
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const enum version _lib_version = ansi_1;
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#elif defined(Xc)
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const enum version _lib_version = strict_ansi;
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#elif defined(Xt)
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const enum version _lib_version = c_issue_4;
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#else
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#error "compile by issuing 'ksh -f values.c [gcc] [-m64]'"
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#endif
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#if defined(__x86_64__)
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asm("\n"
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".section .init\n"
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".align 1\n"
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" leaq 1f(%rip),%rax\n"
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"1: cmpl $0,2f-1b(%rax)\n"
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" jne 2f\n"
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" jmp 2f+5\n"
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" .skip 9\n" /* pad up to 0x1b bytes */
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"2:\n"
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);
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#else
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asm("\n"
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".section .init\n"
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".align 1\n"
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" call 1f\n"
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"1: popl %eax\n"
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" cmpl $0,2f-1b(%eax)\n"
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" jne 2f\n"
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" jmp 2f+5\n"
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" .skip 10\n" /* pad up to 0x1b bytes */
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"2:\n"
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);
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#endif
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