Re: [fpc-devel] arm embedded on 2.6.0rc1
On 21 Dec 2011, at 10:43, fpc-devel-requ...@lists.freepascal.org wrote:
From: Jeppe Græsdal Johansen jjoha...@student.aau.dk
Subject: Re: [fpc-devel] arm embedded on 2.6.0rc1
Date: 20 December 2011 21:20:07 GMT
To: FPC developers' list fpc-devel@lists.freepascal.org
Reply-To: FPC developers' list fpc-devel@lists.freepascal.org
Den 20-12-2011 21:51, Geoffrey Barton skrev:
I have been trying to cross-compile arm embedded for a cortexm3 using
2.6.0rc1. I had this working previously with 2.4.0 and stellaris controllers.
Following the instructions on the wiki page 'TARGET_Embedded' and adding
suitable devices into cpuinfo etc. where they have been missed out, I can
build a test program. However disassembling the resulting elf file shows the
sections system_fpc_cpuuint, system_sysinitfpu, fpc_initializeunits,
fpc_initializeunitsetc, system_internalexit, fpc_do_exit, system_system_exit
and init$_system to be 32 bit arm code not thumb2. The rest of the program,
including the stellaris.pp code, are correct thumb2 code.
It appears the armv7m subarch is not being acted on when compiling rtl? I
got the same result if I substituted cortexm3 for this too.
Geoffrey
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Do you have an example of how you can see it is 32 bit arm code and not
thumb2?
previously:-
5cf4 SYSTEM_FPC_CPUINIT:
5cf4: 46ecmov ip, sp
5cf6: e92d 4800 stmdb sp!, {fp, lr}
5cfa: 46e3mov fp, ip
5cfc: b08asub sp, #40
5cfe: f000 f803 bl 5d08 SYSTEM_SYSINITFPU
5d02: 46ddmov sp, fp
5d04: e91d 8800 ldmdb sp, {fp, pc}
now:-
5d88 SYSTEM_FPC_CPUINIT:
5d88: e92d4000push{lr}
5d8c: e24dd004sub sp, sp, #4
5d90: e59f0010ldr r0, [pc, #16] ; 5da8
SYSTEM_FPC_CPUINIT+0x20
5d94: e5d0ldrbr0, [r0]
5d98: e350cmp r0, #0
5d9c: 0b02bleq5dac SYSTEM_SYSINITFPU
5da0: e28dd004add sp, sp, #4
5da4: e8bd8000pop {pc}
5da8: 2018andcs r0, r0, r8, lsl r0___
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Re: [fpc-devel] arm embedded on 2.6.0rc1
I have found a way out.
You need to add 'CROSSOPT=-Cpcortexm3' at the end of the line:-
make clean buildbase installbase CROSSINSTALL=1 OS_TARGET=embedded
CPU_TARGET=arm SUBARCH=armv7m
in the wiki page.
Then the rtl builds in thumb2.
Geoffrey
On 21 Dec 2011, at 10:55, Geoffrey Barton wrote:
On 21 Dec 2011, at 10:43, fpc-devel-requ...@lists.freepascal.org wrote:
From: Jeppe Græsdal Johansen jjoha...@student.aau.dk
Subject: Re: [fpc-devel] arm embedded on 2.6.0rc1
Date: 20 December 2011 21:20:07 GMT
To: FPC developers' list fpc-devel@lists.freepascal.org
Reply-To: FPC developers' list fpc-devel@lists.freepascal.org
Den 20-12-2011 21:51, Geoffrey Barton skrev:
I have been trying to cross-compile arm embedded for a cortexm3 using
2.6.0rc1. I had this working previously with 2.4.0 and stellaris
controllers.
Following the instructions on the wiki page 'TARGET_Embedded' and adding
suitable devices into cpuinfo etc. where they have been missed out, I can
build a test program. However disassembling the resulting elf file shows
the sections system_fpc_cpuuint, system_sysinitfpu, fpc_initializeunits,
fpc_initializeunitsetc, system_internalexit, fpc_do_exit,
system_system_exit and init$_system to be 32 bit arm code not thumb2. The
rest of the program, including the stellaris.pp code, are correct thumb2
code.
It appears the armv7m subarch is not being acted on when compiling rtl? I
got the same result if I substituted cortexm3 for this too.
Geoffrey
___
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Do you have an example of how you can see it is 32 bit arm code and not
thumb2?
previously:-
5cf4 SYSTEM_FPC_CPUINIT:
5cf4: 46ecmov ip, sp
5cf6: e92d 4800 stmdb sp!, {fp, lr}
5cfa: 46e3mov fp, ip
5cfc: b08asub sp, #40
5cfe: f000 f803 bl 5d08 SYSTEM_SYSINITFPU
5d02: 46ddmov sp, fp
5d04: e91d 8800 ldmdb sp, {fp, pc}
now:-
5d88 SYSTEM_FPC_CPUINIT:
5d88: e92d4000push{lr}
5d8c: e24dd004sub sp, sp, #4
5d90: e59f0010ldr r0, [pc, #16] ; 5da8
SYSTEM_FPC_CPUINIT+0x20
5d94: e5d0ldrbr0, [r0]
5d98: e350cmp r0, #0
5d9c: 0b02bleq5dac SYSTEM_SYSINITFPU
5da0: e28dd004add sp, sp, #4
5da4: e8bd8000pop {pc}
5da8: 2018andcs r0, r0, r8, lsl r0
___
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[fpc-devel] arm embedded on 2.6.0rc1
I have been trying to cross-compile arm embedded for a cortexm3 using 2.6.0rc1. I had this working previously with 2.4.0 and stellaris controllers. Following the instructions on the wiki page 'TARGET_Embedded' and adding suitable devices into cpuinfo etc. where they have been missed out, I can build a test program. However disassembling the resulting elf file shows the sections system_fpc_cpuuint, system_sysinitfpu, fpc_initializeunits, fpc_initializeunitsetc, system_internalexit, fpc_do_exit, system_system_exit and init$_system to be 32 bit arm code not thumb2. The rest of the program, including the stellaris.pp code, are correct thumb2 code. It appears the armv7m subarch is not being acted on when compiling rtl? I got the same result if I substituted cortexm3 for this too. Geoffrey ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] arm embedded on 2.6.0rc1
Den 20-12-2011 21:51, Geoffrey Barton skrev: I have been trying to cross-compile arm embedded for a cortexm3 using 2.6.0rc1. I had this working previously with 2.4.0 and stellaris controllers. Following the instructions on the wiki page 'TARGET_Embedded' and adding suitable devices into cpuinfo etc. where they have been missed out, I can build a test program. However disassembling the resulting elf file shows the sections system_fpc_cpuuint, system_sysinitfpu, fpc_initializeunits, fpc_initializeunitsetc, system_internalexit, fpc_do_exit, system_system_exit and init$_system to be 32 bit arm code not thumb2. The rest of the program, including the stellaris.pp code, are correct thumb2 code. It appears the armv7m subarch is not being acted on when compiling rtl? I got the same result if I substituted cortexm3 for this too. Geoffrey ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel Do you have an example of how you can see it is 32 bit arm code and not thumb2? ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
