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Remove the 4k between code and data to increase the stack space. 

Support for 64bit disk blocks seems to have exploded the code.
This commit is contained in:
dsl 2003-01-28 16:21:58 +00:00
parent 0cbe3d790b
commit 00706969a9
1 changed files with 26 additions and 4 deletions
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30
sys/arch/i386/stand/Makefile.booters
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@ -1,4 +1,4 @@
# $NetBSD: Makefile.booters,v 1.38 2003/01/14 23:51:34 thorpej Exp $
# $NetBSD: Makefile.booters,v 1.39 2003/01/28 16:21:58 dsl Exp $
.include <bsd.own.mk>
@ -23,8 +23,13 @@ COPTS+= -ffreestanding
I386_STAND_DIR?= $S/arch/i386/stand
.PATH: ${I386_STAND_DIR}/lib/crt/bootsect ${I386_STAND_DIR}/lib
# ensure the stuff we need to load all of 'biosboot' in in the first few
# sectors, and that anything that goes to real mode is in the first 64k.
# (prot_to_real will bleat if the return address is >64k)
BSSTART= start_bootsect.o fraglist.o bootsectmain.o biosdisk_ll.o \
bios_disk.o diskbuf.o
bios_disk.o diskbuf.o \
biosdelay.o biosgetrtc.o biosmca.o biosmem.o biosmemx.o \
biosreboot.o conio.o
.PATH: ${I386_STAND_DIR}/lib/crt/rom
ROMSTART= start_rom.o
@ -105,8 +110,25 @@ vers.c: ${VERSIONFILE} ${SOURCES}
CLEANFILES+= ${BASE}.sym
${BASE}.sym: ${STARTFILE} ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN} ${LIBI386}
${LD} -o ${BASE}.sym ${LDFLAGS} -Ttext ${RELOC} ${STARTFILE} ${OBJS} \
${LIBLIST} >${BASE}.list
@# A default link has a 4k gap between the rodata and data.
@# We don't need it here - and are short of space!
@# The -N option might work - but it puts the code at offset
@# 0x80 in the file.
@# Get linker to tell us its link script and remove the line.
@rm -f ${BASE}.ldscript
@ ${LD} --verbose >${BASE}.ldscript
@ printf '%b' "1,/^===/d\nd\nd\n/ALIGN(0x1000)/\nd\n/^===/\nd\nwq\n" \
| ed -s ${BASE}.ldscript >/dev/null
${LD} -o ${BASE}.sym ${LDFLAGS} -Ttext ${RELOC} -T ${BASE}.ldscript \
${STARTFILE} ${OBJS} ${LIBLIST} >${BASE}.list
@# The code, bss, data and stack are restricted to one 64k segment.
@# Check there is a 'moderate' amount (4k) of stack space.
@# 2k isn't enough, 3.5k might be (but harder to test for).
@# If the stack is too small hair starts being pulled out.
@ grep '^[ 0x]*[a-e].*PROVIDE (end, .)$$' ${BASE}.list >/dev/null || { \
echo "*** Less that 4k stack space in biosboot" >&2; \
rm -f ${BASE}.sym; \
false; }
CLEANFILES+= ${BASE}.rom
${BASE}.rom: ${STARTFILE} ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN} ${LIBI386}