Commit 6505b241 authored by Vladimir Serbinenko's avatar Vladimir Serbinenko

Remove obsolete ADDR32 and DATA32 checks.

parent 37353f0a
......@@ -210,80 +210,6 @@ fi
])
dnl Mass confusion!
dnl Older versions of GAS interpret `.code16' to mean ``generate 32-bit
dnl instructions, but implicitly insert addr32 and data32 bytes so
dnl that the code works in real mode''.
dnl
dnl Newer versions of GAS interpret `.code16' to mean ``generate 16-bit
dnl instructions,'' which seems right. This requires the programmer
dnl to explicitly insert addr32 and data32 instructions when they want
dnl them.
dnl
dnl We only support the newer versions, because the old versions cause
dnl major pain, by requiring manual assembly to get 16-bit instructions into
dnl asm files.
AC_DEFUN([grub_I386_ASM_ADDR32],
[AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([grub_I386_ASM_PREFIX_REQUIREMENT])
AC_MSG_CHECKING([for .code16 addr32 assembler support])
AC_CACHE_VAL(grub_cv_i386_asm_addr32,
[cat > conftest.s.in <<\EOF
.code16
l1: @ADDR32@ movb %al, l1
EOF
if test "x$grub_cv_i386_asm_prefix_requirement" = xyes; then
sed -e s/@ADDR32@/addr32/ < conftest.s.in > conftest.s
else
sed -e s/@ADDR32@/addr32\;/ < conftest.s.in > conftest.s
fi
if AC_TRY_COMMAND([${CC-cc} ${TARGET_CCASFLAGS} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then
grub_cv_i386_asm_addr32=yes
else
grub_cv_i386_asm_addr32=no
fi
rm -f conftest*])
AC_MSG_RESULT([$grub_cv_i386_asm_addr32])])
dnl Later versions of GAS requires that addr32 and data32 prefixes
dnl appear in the same lines as the instructions they modify, while
dnl earlier versions requires that they appear in separate lines.
AC_DEFUN([grub_I386_ASM_PREFIX_REQUIREMENT],
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(dnl
[whether addr32 must be in the same line as the instruction])
AC_CACHE_VAL(grub_cv_i386_asm_prefix_requirement,
[cat > conftest.s <<\EOF
.code16
l1: addr32 movb %al, l1
EOF
if AC_TRY_COMMAND([${CC-cc} ${TARGET_CCASFLAGS} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then
grub_cv_i386_asm_prefix_requirement=yes
else
grub_cv_i386_asm_prefix_requirement=no
fi
rm -f conftest*])
if test "x$grub_cv_i386_asm_prefix_requirement" = xyes; then
grub_tmp_addr32="addr32"
grub_tmp_data32="data32"
else
grub_tmp_addr32="addr32;"
grub_tmp_data32="data32;"
fi
ADDR32=$grub_tmp_addr32
DATA32=$grub_tmp_data32
AC_MSG_RESULT([$grub_cv_i386_asm_prefix_requirement])])
dnl Check what symbol is defined as a bss start symbol.
dnl Written by Michael Hohmoth and Yoshinori K. Okuji.
AC_DEFUN([grub_CHECK_BSS_START_SYMBOL],
......
......@@ -31,10 +31,6 @@
#define HAVE_FONT_SOURCE @HAVE_FONT_SOURCE@
/* Define if C symbols get an underscore after compilation. */
#define HAVE_ASM_USCORE @HAVE_ASM_USCORE@
/* Define it to \"addr32\" or \"addr32;\" to make GAS happy. */
#define ADDR32 @ADDR32@
/* Define it to \"data32\" or \"data32;\" to make GAS happy. */
#define DATA32 @DATA32@
/* Define it to one of __bss_start, edata and _edata. */
#define BSS_START_SYMBOL @BSS_START_SYMBOL@
/* Define it to either end or _end. */
......
......@@ -1096,8 +1096,6 @@ if test "x$target_cpu" = xi386; then
grub_CHECK_END_SYMBOL
fi
CFLAGS="$TARGET_CFLAGS"
grub_I386_ASM_PREFIX_REQUIREMENT
grub_I386_ASM_ADDR32
fi
grub_PROG_NM_WORKS
......@@ -1621,8 +1619,6 @@ AS_IF([test x$target_cpu = xi386 -a x$platform = xqemu],
[AC_SUBST([GRUB_BOOT_MACHINE_LINK_ADDR], 0xffe00)])
AC_SUBST(HAVE_ASM_USCORE)
AC_SUBST(ADDR32)
AC_SUBST(DATA32)
AC_SUBST(BSS_START_SYMBOL)
AC_SUBST(END_SYMBOL)
AC_SUBST(PACKAGE)
......
......@@ -9,8 +9,6 @@ grub_have_font_source=@HAVE_FONT_SOURCE@
# Autodetected config
grub_have_asm_uscore=@HAVE_ASM_USCORE@
grub_i8086_addr32="@ADDR32@"
grub_i8086_data32="@DATA32@"
grub_bss_start_symbol="@BSS_START_SYMBOL@"
grub_end_symbol="@END_SYMBOL@"
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment