Move ThumbFunc flag from section to symbol.
Make .w forms optional the other way around. If .w is explicitly put on an instruction the assembler should always chose a wide form.
git-svn-id: branches/laksen/armiw@29341 -
Switched codegeneration of VFPv2 and VFPv3 to use UAL mnemonics and syntax.
Updated VFP code in RTL to use UAL syntax too.
Added preliminary ELF support for ARM.
Added support for linking of WinCE COFF files. Should work for with a standard ARMv4-I target.
git-svn-id: branches/laksen/armiw@29247 -
* Changed type of softfloat_exception_mask and softfloat_exception_flags to TFPUExceptionMask, softfloat_rounding_mode to TFPURoundingMode.
- Cleaned out numerous conversions happening when getting/setting exception mask and rounding mode.
git-svn-id: trunk@27215 -
- memory barriers are only needed on armv6 and up
- DMB on ARMv6 is "mcr 15, 0, r0, cr7, cr10, {5}", not "mcr 15, 0, r0, cr7, cr10, {4}"
- improve write barrier on armv7 by using "dmb st" instead of "dmb sy"
todo: The use of the correct barrier code should be determined during runtime.
git-svn-id: trunk@22867 -
Add simple Mul+Sub/Mul+Add into MLS/MLA optimizations
Fix some other small issues in the optimizer
Implement Interlocked* functions with proper use of LDREX/STREX
git-svn-id: branches/laksen/arm-embedded@22801 -
fpc_ansistr_incr_ref for Darwin/ARM: they don't follow the Darwin/ARM
ABI for function calls, the code already contains enough ifdefs and
I don't want to spend time on maintaining OS-specific assembler
implementations
git-svn-id: trunk@22121 -
An LDR will have two load latency cycles on most ARM implementations,
moving the
mov r4, r0
two instructions away from the corresponding ldr will avoid the stalls.
git-svn-id: trunk@22107 -
+ 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 -
Instead of directly using "swp" in InterlockedExchange, use
- kuser_cmpxchg if available (on Linux/armel)
- the fpc global mutex (fpc_system_lock) otherwise
to implement it.
git-svn-id: trunk@22062 -
Optimized to minimize load latency and icache usage. Together with the
previous fpc_ansistr_decr_ref optimization this little test programm
runs about 40% faster.
program stringspeed;
procedure test(s:string);
begin
end;
var
s:string;
i: cardinal;
begin
s:='abcd';
for i:=0 to $FFFFFF do
test(s);
end.
Even with s:='' it's about 30% faster.
git-svn-id: trunk@22035 -
