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Gcc Error Branch Out Of Range

GCC atomic primitives Using assembler generally impairs portability. See inst.relax and output_relax_insn. ARM Assembler Overview I could spend a long time writing one, but there's plenty of resources on the web. When referencing GNU assembler local labels (0b, 1f etc.) the Thumb bit will not be set appropriately. ".": The current assembly location symbol in the GNU assembler (.) never has the

Board index The team • Delete all board cookies • All times are UTC [ DST ] Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. yes Debian build baseline for the armel arch (Thumb not used) __ARM_ARCH_5__ ARMv5 non-Thumb variants yes none ? BX (register is usually lr): switches depending on bottom bit of The is one of the two right ways to do a procedure return. function return MOVpc,lr BXlr In a system (like Ubuntu lucid) which contains a mixture of Thumb and ARM code, MOVpc,lr is usually not safe - BXlr should be used instead.

There is also an MCRp15,... As for B

It's a big hammer, but it works. Method 2 is only allowed for nearby labels in the same section of the same source file, but it can be more compact and efficient. The time now is 02:14 AM. Bug reassigned from package `qt-x11-free' to `g++-3.3'.

Note that just because a symbol appears in a code section it is not assumed to be a code symbol unless specifically tagged in one of the aforementioned ways. The assembler will insert the literals in the next compiler-generated literal pool, or at the end of the file, whichever occurs first. ("literal pool" = each place in the text section Attaching the assembly file mp.s generated with: [email protected]:~/bugs/mp$ /scratch/asa-san/cbuild/slaves/ursa4/gcc-linaro-4.6-2012.01/gcc-binary/bin/gcc -c -o mp.o mp.c -O3 -funroll-loops -save-temps -dp mp.s: Assembler messages: mp.s:116: Error: branch out of range mp.s:343: Error: branch out of find more info The %[%] are .set noat/.set at; but la is a macro which expands to a use of $at... -- System Information: Debian Release: testing/unstable Architecture: i386 Kernel: Linux nevyn 2.6.0-test4-nevyn #1

Note that we assume here that there is no way to force the processor to change the whole 128-bit value in a way which is fully atomic: reset_counter: BL get_mutex /* Procedure calls and returns When using Thumb-2, the system will generally contain a mixture of ARM and Thumb-2 functions (depending on how libraries and binaries, and their component objects and functions, not officially not officially rare __ARM_ARCH_7__ ARMv7 variants common subset yes Thumb 2 no no no no no not applicable; ARM instruction set not guaranteed to be supported __ARM_ARCH_7A__ ARMv7-A (Applications Add the following command-line option to the assembler: -mimplicit-it=thumbGenerally you should not add IT directives to the source by hand, since this will be incompatible for older tools.

Why would a password requirement prohibit a number in the last character? https://www.linux-mips.org/archives/linux-mips/2000-03/msg00060.html Notification sent to Ryan Murray : Bug acknowledged by developer. For register shifts tie operands 0 and 1. (peephole2 for above): Check that register-controlled shifts have suitably tied operands. If you want to build pre-existing stand-alone assembler files as Thumb-2, you need to do the following: Port the code as required to be Thumb-2 compatible (as documented on this page).

Usually these sorts of problems become easier to understand when you can look at how the compiler, ummm, "compiled" your code... assembles either to fixed-size 32-bit (ARM) instructions, or mixed-size (16-/32-bit) Thumb-2 instructions (lucid default), depending on the GCC configuration and command-line options (-marm, -mthumb). Daniel Jacobowitz writes: > Package: gcc-3.3 > Version: 1:3.3.2-0pre1 > Followup-For: Bug #207915 > > MontaVista hit the same problem. This is also quite expensive on modern platforms, since the whole system bus must be locked for the operation.

This could be extended to handle the out-of-range bl to blr case. Full text and rfc822 format available. Note that the optional condition code at the end of each instruction mnemonic is omitted. The # cycles include overhead from measuring.

See "Atomic Operations" for a more general discussion of how to port these cases. Not knowing the architecture, I suspect you don't have to initialize it all, since the first qsub should set it. etc.) are deprecated, but it is rare to encounter these.

Because Debian does not use Thumb code, the following snippet is usually sensible (see "Computed destinations and returns" for an explanation of why this isn't safe for Thumb code, though): #if

Note: For historical reasons as does support a -mthumb command-line option, but it doesn't do what you want: this enables the older Thumb-1, which has it's own, incompatible syntax. it costs two cycles more if (a-b) >32bit result. @michael: i had to write "=&l" (temp)", because oneo f the instructins wants a low (r0--r7) register Last edited by Frank B; Note that calls and jumps to another location in the assembler source file, if present, need careful handling. Hence something has been broken from oneiric/armel to precise/armhf.

what happened in testing? Getting this right is known as "interworking". In GCC Bugzilla #52294, stevenb (steven-gcc) wrote on 2012-02-18: #14 Richard, I suppose you mean the problem is in this define_insn: (define_insn "*thumb1_ashlsi3" [(set (match_operand:SI 0 "register_operand" "=l,l") (ashift:SI (match_operand:SI 1 or [pc], syntax).

Edit bug mail Other bug subscribers Subscribe someone else Bug attachments Example problematic file (edit) mp.s.tar.xz (edit) Add attachment Remote bug watches gcc-bugzilla #52294 [RESOLVED FIXED] Edit Bug watches keep track For example: _init: LDR sp, =initialStackTop B start .ltorg @ insert literal data hereIt's up to the programmer to ensure that the literal words are not executed as code. So yes, the branches are out of range. To solve this, you can tell the assembler to put the literal pool in a particular location using the .ltorg directive.

Using this sequence in Thumb code will not work correctly, since the value in lr will not be correct for an interworking return. #ifdefs may be required for compatibility with e.g., Any objections ? [code] static inline int32_t saturated_subtract32_and_divide(int32_t a, int32_t b, int32_t c) __attribute__((always_inline)); int32_t saturated_subtract32_and_divide(int32_t a, int32_t b, int32_t c) { int32_t result; int32_t temp; __asm ( //volatile not neccessary Even though it's named with a .o extension, because you added "-S", it will actually be the generated assembly code. In particular, attempts to manually determine a return address (movlr,pc or similar) or index inline jump tables (ldrpc,[pc,]) or similar may need attention.

Note that extra load and store instruction (of any kind) between LDREX and STREX can cause the STREX always to fail in some implementations, which is why you shouldn't access memory How to show hidden files in Nautilus 3.20.3 Ubuntu 16.10? yes Debian runtime baseline for the armel arch __ARM_ARCH_4T__ ARMv4T (including ARM7TDMI) ) yes Thumb 1 ? COLLECT_GCC=arm-elf-gcc COLLECT_LTO_WRAPPER=/cygdrive/c/usr/local/cross/libexec/gcc/arm-elf/4.5.0/lto-wrapper.exe Target: arm-elf Configured with: ../configure --prefix=/cygdrive/c/usr/local/cross --target=arm-elf --with-float=soft --enable-languages=c,c++ --enable-lto --with-libelf=/usr/local Thread model: single gcc version 4.5.0 (GCC) Error: $ arm-elf-gcc -c -Os -mthumb test.i /cygdrive/c/Users/exceed/AppData/Local/Temp/cc6UR3zm.s: Assembler messages: /cygdrive/c/Users/exceed/AppData/Local/Temp/cc6UR3zm.s:32816:

Comment 12 Joseph S. using the SWP instruction SWP does an atomic memory read-write operation, analogous to lockxchg on x86. Forum New Posts FAQ Calendar Community Member List Forum Actions Mark Forums Read Quick Links Today's Posts View Site Leaders Advanced Search Forum Main Category Technical Support & Questions GCC/GAS weired Full text and rfc822 format available.

Use an additional script or macro processor (I've seen m4 used) to preprocess the assembler source. For register shifts tie operands 0 and 1. (peephole2 for above): Check that register-controlled shifts have suitably tied operands. Full text and rfc822 format available. Message #34 received at [email protected] (full text, mbox, reply): From: Daniel Jacobowitz To: Debian Bug Tracking System <[email protected]> Subject: gcc-3.3: [mips/el] Potential solution Date: Sun, 31 Aug 2003 15:00:20 -0400

If you still want to load from a local text section label which you declare explicitly, don't try to be clever with explicit PC arithmetic, just use LDR,