+2015-03-10 Georg-Johann Lay <avr@gjlay.de>
+
+ PR target/65296
+ * configure.ac [avr]: Check as for options -mrmw, --mlink-relax.
+ * configure: Regenerate.
+ * config.in: Regenerate.
+ * doc/invoke.texi (AVR Options) [-mrmw]: Document it.
+ [-mn-flash]: Document it.
+ [__AVR_ARCH__]: Document avrtiny.
+
+ * config/avr/gen-avr-mmcu-specs.c (config.h): Include it.
+ (*asm_relax): Only define spec if HAVE_AS_AVR_MLINK_RELAX_OPTION.
+ (*asm_rmw): Only define spec if HAVE_AS_AVR_MRMW_OPTION.
+
2015-03-11 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* doc/invoke.texi: Add missing cpu values (z196, zEC12).
#endif
+/* Define if your avr assembler supports --mlink-relax option. */
+#ifndef USED_FOR_TARGET
+#undef HAVE_AS_AVR_MLINK_RELAX_OPTION
+#endif
+
+
+/* Define if your avr assembler supports -mrmw option. */
+#ifndef USED_FOR_TARGET
+#undef HAVE_AS_AVR_MRMW_OPTION
+#endif
+
+
/* Define if your assembler supports cmpb. */
#ifndef USED_FOR_TARGET
#undef HAVE_AS_CMPB
#include <stdio.h>
#include <string.h>
+#include "config.h"
+
#define IN_GEN_AVR_MMCU_TEXI
#include "avr-devices.c"
fprintf (f, "*asm_arch:\n\t-mmcu=%s\n\n", arch->name);
+#ifdef HAVE_AS_AVR_MLINK_RELAX_OPTION
fprintf (f, "*asm_relax:\n\t%s\n\n", ASM_RELAX_SPEC);
+#endif // have as --mlink-relax
+#ifdef HAVE_AS_AVR_MRMW_OPTION
fprintf (f, "*asm_rmw:\n%s\n\n", rmw
? "\t%{!mno-rmw: -mrmw}"
: "\t%{mrmw}");
+#endif // have as -mrmw
fprintf (f, "*asm_errata_skip:\n%s\n\n", errata_skip
? "\t%{mno-skip-bug}"
$as_echo "#define HAVE_AS_JSRDIRECT_RELOCS 1" >>confdefs.h
+fi
+ ;;
+
+ avr-*-*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for --mlink-relax option" >&5
+$as_echo_n "checking assembler for --mlink-relax option... " >&6; }
+if test "${gcc_cv_as_avr_mlink_relax+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ gcc_cv_as_avr_mlink_relax=no
+ if test x$gcc_cv_as != x; then
+ $as_echo '.text' > conftest.s
+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags --mlink-relax -o conftest.o conftest.s >&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+ then
+ gcc_cv_as_avr_mlink_relax=yes
+ else
+ echo "configure: failed program was" >&5
+ cat conftest.s >&5
+ fi
+ rm -f conftest.o conftest.s
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_avr_mlink_relax" >&5
+$as_echo "$gcc_cv_as_avr_mlink_relax" >&6; }
+if test $gcc_cv_as_avr_mlink_relax = yes; then
+
+$as_echo "#define HAVE_AS_AVR_MLINK_RELAX_OPTION 1" >>confdefs.h
+
+fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -mrmw option" >&5
+$as_echo_n "checking assembler for -mrmw option... " >&6; }
+if test "${gcc_cv_as_avr_mrmw+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ gcc_cv_as_avr_mrmw=no
+ if test x$gcc_cv_as != x; then
+ $as_echo '.text' > conftest.s
+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags -mrmw -o conftest.o conftest.s >&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+ then
+ gcc_cv_as_avr_mrmw=yes
+ else
+ echo "configure: failed program was" >&5
+ cat conftest.s >&5
+ fi
+ rm -f conftest.o conftest.s
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_avr_mrmw" >&5
+$as_echo "$gcc_cv_as_avr_mrmw" >&6; }
+if test $gcc_cv_as_avr_mrmw = yes; then
+
+$as_echo "#define HAVE_AS_AVR_MRMW_OPTION 1" >>confdefs.h
+
fi
;;
[Define if your assembler supports the lituse_jsrdirect relocation.])])
;;
+ avr-*-*)
+ gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
+ [--mlink-relax], [.text],,
+ [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
+ [Define if your avr assembler supports --mlink-relax option.])])
+
+ gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
+ [-mrmw], [.text],,
+ [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
+ [Define if your avr assembler supports -mrmw option.])])
+ ;;
+
cris-*-*)
gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
gcc_cv_as_cris_no_mul_bug,[2,15,91],
@emph{AVR Options}
@gccoptlist{-mmcu=@var{mcu} -maccumulate-args -mbranch-cost=@var{cost} @gol
--mcall-prologues -mint8 -mno-interrupts -mrelax @gol
--mstrict-X -mtiny-stack -Waddr-space-convert}
+-mcall-prologues -mint8 -mn_flash=@var{size} -mno-interrupts @gol
+-mrelax -mrmw -mstrict-X -mtiny-stack -Waddr-space-convert}
@emph{Blackfin Options}
@gccoptlist{-mcpu=@var{cpu}@r{[}-@var{sirevision}@r{]} @gol
conform to the C standards, but it results in smaller code
size.
+@item -mn-flash=@var{num}
+@opindex mn-flash
+Assume that the flash memory has a size of
+@var{num} times 64@tie{}KiB.
+
@item -mno-interrupts
@opindex mno-interrupts
Generated code is not compatible with hardware interrupts.
@opindex mrelax
Try to replace @code{CALL} resp.@: @code{JMP} instruction by the shorter
@code{RCALL} resp.@: @code{RJMP} instruction if applicable.
-Setting @option{-mrelax} just adds the @option{--relax} option to the
-linker command line when the linker is called.
+Setting @option{-mrelax} just adds the @option{--mlink-relax} option to
+the assembler's command line and the @option{--relax} option to the
+linker's command line.
Jump relaxing is performed by the linker because jump offsets are not
known before code is located. Therefore, the assembler code generated by the
Relaxing must be turned on if linker stubs are needed, see the
section on @code{EIND} and linker stubs below.
+@item -mrmw
+@opindex mrmw
+Assume that the device supports the Read-Modify-Write
+instructions @code{XCH}, @code{LAC}, @code{LAS} and @code{LAT}.
+
@item -msp8
@opindex msp8
Treat the stack pointer register as an 8-bit register,
Possible values are:
@code{2}, @code{25}, @code{3}, @code{31}, @code{35},
-@code{4}, @code{5}, @code{51}, @code{6}, @code{102}, @code{104},
+@code{4}, @code{5}, @code{51}, @code{6}
+
+for @var{mcu}=@code{avr2}, @code{avr25}, @code{avr3}, @code{avr31},
+@code{avr35}, @code{avr4}, @code{avr5}, @code{avr51}, @code{avr6},
+
+respectively and
+
+@code{100}, @code{102}, @code{104},
@code{105}, @code{106}, @code{107}
-for @var{mcu}=@code{avr2}, @code{avr25}, @code{avr3},
-@code{avr31}, @code{avr35}, @code{avr4}, @code{avr5}, @code{avr51},
-@code{avr6}, @code{avrxmega2}, @code{avrxmega4}, @code{avrxmega5},
-@code{avrxmega6}, @code{avrxmega7}, respectively.
+for @var{mcu}=@code{avrtiny}, @code{avrxmega2}, @code{avrxmega4},
+@code{avrxmega5}, @code{avrxmega6}, @code{avrxmega7}, respectively.
If @var{mcu} specifies a device, this built-in macro is set
accordingly. For example, with @option{-mmcu=atmega8} the macro is
defined to @code{4}.
If @var{device} is not a device but only a core architecture like
@samp{avr51}, this macro is not defined.
-@item __AVR_DEVICE_NAME__
+@item __AVR_DEVICE_NAME__
Setting @option{-mmcu=@var{device}} defines this built-in macro to
the device's name. For example, with @option{-mmcu=atmega8} the macro
is defined to @code{atmega8}.
+2015-03-11 Georg-Johann Lay <avr@gjlay.de>
+
+ PR target/65296
+ * gcc.target/avr/tiny-memx: Use -mmcu instead of -march.
+ * gcc.target/avr/tiny-caller-save.c: Same.
+
2015-03-11 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/65242
/* { dg-do compile } */
-/* { dg-options "-march=avrtiny -gdwarf -Os" } */
+/* { dg-options "-mmcu=avrtiny -gdwarf -Os" } */
/* This is a stripped down piece of libgcc2.c that triggerd an ICE for avr with
- "-march=avrtiny -g -Os"; replace_reg_with_saved_mem would generate:
+ "-mmcu=avrtiny -g -Os"; replace_reg_with_saved_mem would generate:
(concatn:SI [
(reg:SI 18 r18)
(reg:SI 19 r19)
/* { dg-do compile } */
-/* { dg-options "-march=avrtiny" } */
+/* { dg-options "-mmcu=avrtiny" } */
const __memx char ascmonth[] = "Jan"; /* { dg-error "not supported" } */
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