Date: Sat, 01 Oct 2016 02:05:09 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 213137] boot2 too large when using gcc-4.6 or later Message-ID: <bug-213137-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213137 Bug ID: 213137 Summary: boot2 too large when using gcc-4.6 or later Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: nigoro.dev@gmail.com Created attachment 175328 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=175328&action=edit sample patch for sys/boot/i386/boot2/Makefile If -fasynchronous-unwind-tables is enabled, the size of boot2 is too large. # gcc46 -Os -Q --help=optimize | grep unwind-tables -fasynchronous-unwind-tables [enabled] -funwind-tables [disabled] Steps to Reproduce) # pkg install gcc46 (or new version that you want) # cd /usr/src/sys/boot # CC=gcc46 make Part of log) gcc46 -fomit-frame-pointer -mrtd -mregparm=3 -DUSE_XREAD -DUFS1_AND_UFS2 -DFLAGS=0x80 -DSIOPRT=0x3f8 -DSIOFMT=0x3 -DSIOSPD=9600 -I/usr/src/sys/boot/i386/boot2/../../common -I/usr/src/sys/boot/i386/boot2/../btx/lib -I. -Wall -Waggregate-return -Wbad-function-cast -Wcast-align -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings -Winline -march=i386 -ffreestanding -mno-mmx -mno-sse -msoft-float -m32 -g -std=gnu99 -Os -fno-guess-branch-probability -fno-unit-at-a-time --param max-inline-insns-single=100 -mpreferred-stack-boundary=2 -m32 -c sio.S -o sio.o ld -static -N --gc-sections -m elf_i386_fbsd -Ttext 0x2000 -o boot2.out /usr/src/sys/boot/i386/boot2/../btx/lib/crt0.o boot2.o sio.o objcopy -S -O binary boot2.out boot2.bin btxld -v -E 0x2000 -f bin -b /usr/src/sys/boot/i386/boot2/../btx/btx/btx -l boot2.ldr -o boot2.ld -P 1 boot2.bin kernel: ver=1.02 size=690 load=9000 entry=9010 map=16M pgctl=1:1 client: fmt=bin size=17a1 text=0 data=0 bss=0 entry=0 output: fmt=bin size=2031 text=200 data=1e31 org=0 entry=0 -561 bytes available *** Error code 1 -- You are receiving this mail because: You are the assignee for the bug.
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