On Sat, Mar 28, 2020 at 11:04 PM Florian Klämpfl <flor...@freepascal.org> wrote:
> Am 28.03.20 um 21:33 schrieb Christo Crause via fpc-devel: > > When building the xtensa rtl with > > > > make rtl FPC=~/fpc/3.3.1/compiler/ppcrossxtensa CROSSOPT=-Cacall0 > > CPU_TARGET=xtensa OS_TARGET=embedded SUBARCH=esp8266 > > BINUTILSPREFIX=xtensa-lx106-elf- > > > > the following errors are returned by as: > > /home/christo/fpc/3.3.1/rtl/units/xtensa-embedded/system.s: Assembler > > messages: > > /home/christo/fpc/3.3.1/rtl/units/xtensa-embedded/system.s:203: Error: > > unknown opcode or format name 'sext' > > /home/christo/fpc/3.3.1/rtl/units/xtensa-embedded/system.s:204: Error: > > unknown opcode or format name 'sext' > > > > When building with CROSSOPT=-Cawindowed as complains about other errors: > > /home/christo/fpc/3.3.1/rtl/units/xtensa-embedded/system.s: Assembler > > messages: > > /home/christo/fpc/3.3.1/rtl/units/xtensa-embedded/system.s:11: Error: > > unknown opcode or format name 'retw' > > > > Any tips on how to build the xtensa rtl? > > I didn't care about the call0 abi yet. Is it used by the esp8266? > Inspecting some C examples I've compiled with PlatformIO for ESP8266 shows use of callx0 for the non-rtos SDK. My goal was just to test the cross compiler, but the RTL failed with error 2020031404 (in tcpuparamanager.init_values) which seems to suggest an ABI must be specified. Neither of the options I tried satisfied the assembler however.
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