+ Xtensa: register information

+ Xtensa: lazarus project

+ Xtensa: initial skeleton completed
+ xtensa-embedded support in the compiler

+ Xtensa: support in the build utilities

+ Xtensa: RTL skeleton

+ Xtensa: completed rtl skeleton

* Xtensa: completed compiler skeleton

+ Xtensa: basic operations for Xtensa implemented

* Xtensa: initial controller types

+ Xtensa: a_loadaddr_ref_reg implemented

+ Xtensa: CALL0 abi started

cgcpu: Implement a_cmp_reg_reg_label

xtensa: Add preliminary support for comparisons

makefiles: Add support for xtensa-embedded target.

+ Xtensa: tcgcpu.a_load_ref_reg

+ Xtensa: tcgcpu.a_load_reg_ref

+ Xtensa: tcgcpu.a_op_reg_reg

ncpuadd: Fix handling of signs in comparisons

esp8266: Make startup code compile.

+ Xtensa: tcgcpu.a_op_const_reg

+ Xtensa: tcgcpu.a_op_const_reg_reg

+ Xtensa: tcgcpu.a_op_const_reg_reg

+ Xtensa: mathu.inc using only the softfloat unit provided mechanisms

+ Xtensa: make use of ADDI

+ Xtensa: tcgcpu.g_concatcopy

* Xtensa: cleanup unused stuff
+ Xtense: updated conditions

* Xtense: prettify assembler output

+ Xtensa: initial tcg64fxtensa.a_op64_reg_reg_reg

+ Xtensa: implemented tcg64fxtensa.a_op64_reg_reg

* Xtensa: shifting fixed

Add immediate/zero comparisons.

+ Xtensa: make use of slli and srli

xtensa: Add 64bit arithmetic operations.

* Xtensa: cleanup dummy code

+ Xtensa: tcgcpu.maybeadjustresult

+ Xtensa: initial tcg64fxtensa.a_op64_const_reg_reg, still room for improvements

+ Xtensa: tcg64fxtensa.a_op64_const_reg

+ Xtensa: initial implementation of tcgcpu.g_proc_entry

+ Xtensa: tcpuinlinenode.second_abs_long

* Xtensa: set correct frame pointer register

* Xtensa: fix load_reg/ref_reg/ref

* Xtensa: improve tcgcpu.fixref

* Xtensa: more fixes for load_reg/ref_reg/ref

* Xtensa: generate long calls

+ Xtensa: initial support of the windowed abi

* Xtensa: no scheduler yet but loops can be unrolled

* Xtensa: fix txtensanodeutils.insert_init_final_table for the windowed abi

* Xtensa: parameter passing for the windowed abi

* Xtensa: improved handling of calling conventions

* Xtensa: proper code generation for unit initialization

* Xtensa: system_xtensa_embedded is an embedded system

* Xtensa: align literals properly

+ Xtensa: implemented tcputypeconvnode.second_int_to_bool

* Xtensa: fix tcpunotnode.second_boolean

+ initial FreeRTOS RTL support, largely based on the Embedded target, limited to Xtensa so far

* Xtensa: fix tcgcpu.a_cmp_reg_reg_label

* Xtensa: tcgcpu.g_concatcopy fixed: keep registers alive

* Xtensa: fix TCPUAddNode.second_cmp

* Xtensa: use generic tcpuparamanager.getcgtempparaloc

* fix ppudump after addition of freertos-xtensa

* Xtensa: returning of 32 Bit values fixes

* Xtensa: shift operations fixed

* make TLinkerInfo fields ansistrings as xtensa-freertos needs long command lines

+ Xtensa: add linklib statements, better _halt procedure

+ Xtensa: generate all helper files to fpc can successfully compile a single program

* ESP32: set flash size to a resonable value (assumes external flash for now)

* xtensa-freertos: enable softfloat for now

* Xtensa: spilling for bigger offsets fixed

* Xtensa: reduce stack usage

* Xtensa: FreeRTOS uses windowed calling convention

+ Xtensa: boolean registers * Xtensa: register numbers of floating point registers corrected

* Xtensa: set fpu type dependending on the controller

+ Xtensa: the boolean extension is used as flags

+ Xtensa: hard float support, i.e. make use of floating point extension if available

* Xtensa: fix passing of floating point parameters

+ xtensa-linux

* compilation for non-Xtensa targets fixed

* building on non-x86/non-xtensa fixed

+ xtensa-linux support for the rtl makefile

+ basic xtensa-linux support in the compiler

+ xtensa-linux: OS specific system unit header files

+ more instructions

+ xtensa-linux added to systems_linux

Fix ppudump after addition of system_xtensa_linux target

* improve assembler reader

+ optimize SUB for small constants using ADDI

+ initial thlcgxtensa.g_intf_wrapper

+ initial xtensa-linux rtl

* fix taicpu.is_same_reg_move

* Xtensa: fix reg_cgsize

* Xtensa: properly align maxpushedparasize

* Xtensa: register numbers fixed

* Xtensa: fixes spilling

* dependencies fixes

* Xtensa: fix flag handling: B0 is considered as default flags

* Xtensa: fix expectloc of taddnode

* Xtensa: patch by Christo Crause to handle the sign extension architecture option, resolves 0036885

amicommon: only include exec extensions when complied for v2.0

* Xtensa: dummy overflow checking

* go through cg to generate jumps, so the right jump is generated always

* use j.l in external wrappers, this is not save yet as A15 might contain
an argument: externals need to be called with call4 if they use all
parameter registers, this needs to be implemented

* build more units for FreeRTOS

* Xtensa: generate better code for adding/subtracting 16 bit constants

* Xtensa: handle localsize > 32760

+ xtensa-embedded: patch by Christo Crause to check and support SUBARCH

* adapted xtensa-freertos to work with the currently stable ESP-IDF 4.0, partially based on a patch by Michael Ring

* Xtensa: make use of extui for shifting with constant values >=16

Set 'default' target to freertos in rtl/freertos directory

* xtensa-freertos requires also SUBARCH being set

* Xtensa: do SAR by a constant using SRAI

+ Xtensa: make use of ADDX*

+ Xtensa: enable jump optimizer

* Xtensa: set source_cpu_string

* Xtensa: fpc_setjmp dummy

+ xtensa-linux support for several packages

* simplify xtensa-linux building

+ Xtensa: Sptr

+ patch by Christo Crause: ESP8266 controller unit for freertos, resolves 0037336

Add -SfPROCESSES for arm cpu, to be able to compile fcl-base package as for xtensa

- remove local Random() implementations that weren't exported anyway (LongInt <> Integer inside the System unit)

* Xtensa: patch by Christo Crause: add support for windowed ABI stack dump, resolves 0037583

* StackTop must be OS specific (and not CPU specific)

* reduce number of default libs

+ initial implementation of setjmp/longjmp

* TThread.Terminate does not have any platform specific behavior (it should only set FTerminated to true and call TerminatedSet), thus move it to the platform independant part
Notes:
- Netware had a ThreadSwitch in there, but that is not really required
- some platform were missing the setting of FTerminated to True, thus they'll now do that as well

* Xtensa: disable simple random again, committed by accident

* Xtensa FreeRTOS: unified haltproc

* compilation fixed

* Xtensa-FreeRTOS: use setjmp/longjmp provided by the Xtensa libraries, we
have to link against them anyways

+ dummy implementation for FreeRTOS threading support

* enable initialization of exceptions and threading on FreeRTOS

Fix problems in xtensa fpc_setjmp/fpc_longjmp for linux