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Tamar Christina 6d6a623e7d AArch32: Add support for HLT to Mixed Mode models 
The Semihosting v2 protocol requires us to output the Armv8-a HLT instruction
when in mixed mode (SEMIHOST_V2_MIXED_MODE), however it also requires this to
be done for Armv7-a and earlier architectures.

The HLT instruction is defined in the undefined encoding space for older
architectures but simulators such as QEMU already trap on it [1] for all
architectures and is a requirement for semihosting v2 [2].

Unfortunately the GAS restricts the use of HLT to Armv8-a which requires us to
use the instruction encodings we want directly in crt0.

This patch does this, I have not updated newlib/libc/* as that is quite out of
date already.  A proper sync is needed in order to get things back in sync.

A different patch for this would be best.

[1] 19a6e31c9d
[2] https://developer.arm.com/docs/100863/latest/the-semihosting-interface
 		2019-02-08 12:37:16 +01:00
..
aarch64 Initialize SVE system registers. 2018-10-31 11:14:57 +00:00
arc Add JLI support. 2017-06-14 14:51:22 +02:00
arm AArch32: Add support for HLT to Mixed Mode models 2019-02-08 12:37:16 +01:00
bfin ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
config libgloss: change 'q' flag to 'r' in ar call 2012-03-13 01:47:40 +00:00
cr16 ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
cris Committed, CRIS port: fix fallout from time_t defaulting to 64 bits, part 1 2018-09-13 17:57:11 +02:00
crx ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
d30v 2013-11-21 Daniel Ramirez <javamonn@gmail.com> 2013-11-21 16:42:17 +00:00
doc Add libgloss install-pdf and install-html targets. 2018-11-20 11:13:34 +01:00
epiphany ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
fr30 Remove GPL licencsing 2010-12-17 10:13:31 +00:00
frv ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
ft32 ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
hp74x [newlib] 2008-04-04 21:52:01 +00:00
i386 [newlib] 2008-04-04 21:52:01 +00:00
i960 2013-11-21 Daniel Ramirez <javamonn@gmail.com> 2013-11-21 16:42:17 +00:00
iq2000 2012-03-09 Jeff Johnston <jjohnstn@redhat.com> 2012-03-09 20:28:57 +00:00
libnosys ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
lm32 ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
m32c * m32c/sbrk.c (sbrk): Change to take ptrdiff_t, not int. 2009-07-08 20:54:19 +00:00
m32r 2009-03-16 Jeff Johnston <jjohnstn@redhat.com> 2009-03-16 19:26:59 +00:00
m68hc11 [newlib] 2008-04-04 21:52:01 +00:00
m68k ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
mcore ansification: remove _EXFUN, _EXFUN_NOTHROW 2018-01-17 11:47:29 -06:00
mep 2015-01-05 Yaakov Selkowitz <yselkowitz@users.sourceforge.net> 2015-01-05 17:36:34 +00:00
microblaze libgloss: microblaze: adjust handlers to be weak. 2018-05-03 15:16:13 -04:00
mips * mips/crt0.S: Configure processor based on .MIPS.abiflags. 2014-11-28 08:51:03 +00:00
mn10200 2012-03-09 Jeff Johnston <jjohnstn@redhat.com> 2012-03-09 20:28:57 +00:00
mn10300 2012-03-09 Jeff Johnston <jjohnstn@redhat.com> 2012-03-09 20:28:57 +00:00
moxie ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
msp430 Fix thinko in MSP430 libgloss implementation of write() system call. 2017-05-26 11:35:13 +01:00
mt 2015-01-05 Yaakov Selkowitz <yselkowitz@users.sourceforge.net> 2015-01-05 17:36:34 +00:00
nds32 * libgloss/nds32/_exit.S: Finish with an infinite loop in _exit. 2014-12-15 13:30:07 +00:00
nios2 Add BSP and semihosting library for nios2-generic-nommu QEMU emulation. 2018-08-08 10:53:03 +02:00
or1k libgloss: Remove duplicate definition of environ 2017-02-13 09:16:51 +01:00
pa [newlib] 2008-04-04 21:52:01 +00:00
riscv RISC-V: Fix _sbrk, it's failed only when return value is -1. 2018-08-29 15:49:00 +02:00
rl78 rl78: Don't output CR when LF is encountered in write(). 2015-12-16 13:38:38 -07:00
rs6000 2013-05-30 Jeff Johnston <jjohnstn@redhat.com> 2013-05-30 22:44:04 +00:00
rx Add a check that the data area does not overrun the stack. 2015-05-27 13:30:19 +02:00
sh * arm/elf-redboot.ld, iq2000/sim.ld, m68hc11/sim-valid-m68hc11.ld, 2005-05-20 15:45:45 +00:00
sparc * sparc/crt0.S: Declare use of system registers. 2015-01-22 17:38:39 +00:00
sparc_leon ansification: remove _HAVE_STDC 2018-01-17 11:47:30 -06:00
spu ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
testsuite 20000317 sourceware import 2000-03-17 22:48:54 +00:00
tic6x ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
v850 Add comment in the v850's crt0.S file noting that separate LMA and VMA addresses for data sections are not currently supported. 2016-05-26 12:08:47 +01:00
visium * COPYING.LIBGLOSS: Add Controls and Data Services copyright. 2015-01-21 18:27:47 +00:00
wince [newlib] 2008-04-04 21:52:01 +00:00
xc16x ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
xstormy16 ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
ChangeLog Deprecate newlib and winsup ChangeLog files 2016-01-28 11:15:33 +01:00
ChangeLog-2015 Deprecate newlib and winsup ChangeLog files 2016-01-28 11:15:33 +01:00
Makefile.in Add libgloss install-pdf and install-html targets. 2018-11-20 11:13:34 +01:00
README 2014-12-15 Stefan Wallentowitz <stefan.wallentowitz@tum.de> 2014-12-15 20:09:28 +00:00
acinclude.m4 2006-04-19 Jeff Johnston <jjohnstn@redhat.com> 2006-04-19 19:44:05 +00:00
aclocal.m4 2006-04-19 Jeff Johnston <jjohnstn@redhat.com> 2006-04-19 19:44:05 +00:00
close.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
configure Add BSP and semihosting library for nios2-generic-nommu QEMU emulation. 2018-08-08 10:53:03 +02:00
configure.in Add BSP and semihosting library for nios2-generic-nommu QEMU emulation. 2018-08-08 10:53:03 +02:00
debug.c 20000317 sourceware import 2000-03-17 22:48:54 +00:00
debug.h 2002-04-17 Joel Sherrill <joel@OARcorp.com> 2002-04-17 19:10:37 +00:00
fstat.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
getpid.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
glue.h 20000317 sourceware import 2000-03-17 22:48:54 +00:00
isatty.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
kill.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
lseek.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
multi-build.in Fix multido compilation on ARM 2017-10-09 19:03:52 +02:00
open.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
print.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
putnum.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
read.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
sbrk.c 20000317 sourceware import 2000-03-17 22:48:54 +00:00
stat.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
syscall.h 2007-11-06 Dave Brolley <brolley@redhat.com> 2007-11-06 23:07:06 +00:00
unlink.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
write.c ansification: remove _EXFUN, _EXFUN_NOTHROW 2018-01-17 11:47:29 -06:00

README 

bfin	- Analog Devices Blackfin processor.
sparc	- Fujitsu Sparclite board. Works on the ex930, ex931, ex933
hp74x	- Hewlett Packard HP742 board. Also some support for the hp743.
m68hc11 - Motorola 68HC11 or 68HC12 support.
m68k	- Motorola MVME135 and IDP board. For CPU32 systems.
mep	- Toshiba Media Processor.
pa	- WinBond and Oki boards with a PA.
mips	- R3000 support. Array Tech LSI33k based RAID disk controller.
lm32    - Lattice Mico32 simulator.
epiphany - Adapteva Epiphany multicore processor.
or1k	- OpenRISC 1000 processor.