7 Commits

Author	SHA1	Message	Date
tom_at_work	f252fd369e	Tried to reorganize the ARM define mess in rtl/arm/arm.inc. Instead of requiring to enumerate all possible ARM variants each time a CPU feature is used, add a define of the format CPUARM_HAS_XXX and use that. Note that a better solution would be to properly implement the compiler cpuinfo infrastructure, however that is much more work. ... + CPUARM_HAS_BX is defined if the CPU supports the BX* instruction + CPUARM_HAS_REV is defined if the CPU supports the REV instruction. Note that you still have to check for compiler versions > 2.6.0 since the assembler reader of 2.6.0 does not understand that instruction. + CPUARM_HAS_IDIV is defined if the CPU supports the sdiv, udiv instructions. Use of this fixes a bug where previously these instruction were only used for armv7-m, while cortex3m cpus also support it. + CPUARM_HAS_LDREX is defined if the CPU supports the ldrex/strex instructions. Use of this fixes a bug with armv7(-a) cpus where this path has not been used. + SYSTEM_HAS_KUSER_CMPXCHG is defined if the system (mainly OS) support the kuser_cmpxchg functions. Use of this fixes a bug where ARMHF systems did not use it for synchronization (although ARMHF is armv7+ only, i.e. the LDREX path is used anyway) git-svn-id: trunk@22081 -	2012-08-14 19:45:03 +00:00
masta	c5fbe3bb3b	Use bx lr in ARM-RTL for armv5 ... ARMv5 supports the BX instruction. BX usually is better supported by Branch Prediction Units than mov pc,lr. git-svn-id: trunk@21649 -	2012-06-18 16:59:39 +00:00
florian	5fa184c952	+ patch by Jeppe Johansen to make use of the div/udiv instruction on arm7m, resolves #20022 ... * explicitly make symbol addressing PC relative git-svn-id: trunk@19221 -	2011-09-24 21:41:01 +00:00
Jonas Maebe	fbebd87593	* use BLX instead of "mov r14, r15; mov r15, reg" for a_call_reg on ARMv6 ... and above, so this also works when calling thumb code (should actually also be done for ARMv5T, but we don't have a monicker for that yet) * use BX instead of "mov r15, r14" for simple returns from subroutines on ARMv6+ to support returning to thumb code from ARM code (idem) git-svn-id: trunk@14332 -	2009-12-04 22:38:50 +00:00
florian	515774b864	* merged armthum branch ... -- Zusammenführen der Unterschiede zwischen Projektarchiv-URLs in ».«: U rtl/arm/setjump.inc A rtl/arm/thumb2.inc U rtl/arm/divide.inc A rtl/embedded/arm/stm32f103.pp U rtl/inc/system.inc U compiler/alpha/cgcpu.pas U compiler/sparc/cgcpu.pas U compiler/i386/cgcpu.pas U compiler/ncgld.pas U compiler/powerpc/cgcpu.pas U compiler/avr/cgcpu.pas U compiler/aggas.pas U compiler/powerpc64/cgcpu.pas U compiler/x86_64/cgcpu.pas U compiler/cgobj.pas U compiler/psystem.pas U compiler/aasmtai.pas U compiler/m68k/cgcpu.pas U compiler/ncgutil.pas U compiler/rautils.pas U compiler/arm/raarmgas.pas U compiler/arm/armatts.inc U compiler/arm/cgcpu.pas U compiler/arm/armins.dat U compiler/arm/rgcpu.pas U compiler/arm/cpubase.pas U compiler/arm/agarmgas.pas U compiler/arm/cpuinfo.pas U compiler/arm/armop.inc U compiler/arm/narmadd.pas U compiler/arm/aoptcpu.pas U compiler/arm/armatt.inc U compiler/arm/aasmcpu.pas U compiler/systems/t_embed.pas U compiler/psub.pas U compiler/options.pas git-svn-id: trunk@13801 -	2009-10-04 09:03:44 +00:00
florian	6dcdf5bdf4	* tabs/spaces fixed ... git-svn-id: trunk@12015 -	2008-11-02 09:41:30 +00:00
daniel	68731ae067	+ Assembler implementation of mod/div. ... Improves amount of divides from about 230000/s to about 2400000/s on ARM920T, 200MHz. git-svn-id: trunk@9543 -	2007-12-27 17:59:45 +00:00