linux.git/arch/xtensa/platforms/iss/include/platform/simcall.h, branch vsnprintf Linux kernel source tree xtensa: ISS: add GDBIO implementation to semihosting interface 2021-04-04T22:39:04+00:00 Max Filippov jcmvbkbc@gmail.com 2021-02-18T18:18:00+00:00 6a8eb99e130f3f7658de2776934374fe1c41279e Add GDBIO implementation for the xtensa semihosting interface. It offers less functions than the simcall interface, so make some semihosting functions optional and return error when implementation is not available. Add Kconfig menu to select semihosting implementation and add simcall and GDBIO choices there. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 
Add GDBIO implementation for the xtensa semihosting interface. It offers
less functions than the simcall interface, so make some semihosting
functions optional and return error when implementation is not
available.
Add Kconfig menu to select semihosting implementation and add simcall and
GDBIO choices there.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: ISS: split simcall implementation from semihosting interface 2021-04-04T22:39:04+00:00 Max Filippov jcmvbkbc@gmail.com 2021-02-18T17:12:28+00:00 54467c126b19230f4d722b67ed7ae5807ed8f5ce Disconnect existing ISS simcall implementation from the semihosting interface to allow for alternative implementations selectable at configure time. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 
Disconnect existing ISS simcall implementation from the semihosting
interface to allow for alternative implementations selectable at
configure time.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: simcall.h: Change compitible to compatible 2021-04-04T22:39:04+00:00 Bhaskar Chowdhury unixbhaskar@gmail.com 2021-03-26T01:27:39+00:00 4671076c4d37a377be3863ba88f62083f1fe3281 s/compitible/compatible/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Message-Id: <20210326012739.18038-1-unixbhaskar@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 
s/compitible/compatible/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Message-Id: <20210326012739.18038-1-unixbhaskar@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Merge tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa 2020-02-07T20:22:29+00:00 Linus Torvalds torvalds@linux-foundation.org 2020-02-07T20:22:29+00:00 9b7fa2880fe716a30d2359d40d12ec4bc69ec7b5 Pull xtensa updates from Max Filippov: - reorganize exception vectors placement - small cleanups (drop unused functions/headers/defconfig entries, spelling fixes) * tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: ISS: improve simcall assembly xtensa: reorganize vectors placement xtensa: separate SMP and XIP support xtensa: move fast exception handlers close to vectors arch/xtensa: fix Kconfig typos for HAVE_SMP xtensa: clean up optional XCHAL_* definitions xtensa: drop unused function fast_coprocessor_double xtensa: drop empty platform_* functions from platforms xtensa: clean up platform headers xtensa: drop set_except_vector declaration xtensa: configs: Cleanup old Kconfig IO scheduler options 
Pull xtensa updates from Max Filippov:

 - reorganize exception vectors placement

 - small cleanups (drop unused functions/headers/defconfig entries,
   spelling fixes)

* tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: ISS: improve simcall assembly
  xtensa: reorganize vectors placement
  xtensa: separate SMP and XIP support
  xtensa: move fast exception handlers close to vectors
  arch/xtensa: fix Kconfig typos for HAVE_SMP
  xtensa: clean up optional XCHAL_* definitions
  xtensa: drop unused function fast_coprocessor_double
  xtensa: drop empty platform_* functions from platforms
  xtensa: clean up platform headers
  xtensa: drop set_except_vector declaration
  xtensa: configs: Cleanup old Kconfig IO scheduler options
xtensa: ISS: improve simcall assembly 2020-02-05T05:57:05+00:00 Max Filippov jcmvbkbc@gmail.com 2020-02-04T20:51:21+00:00 c74c0fd2282e0e3ce891cb571f325b9412cbaa3f Drop redundant result moving from inline assembly, use a1 and b1 values as return value and errno value respectively. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 
Drop redundant result moving from inline assembly, use a1 and b1 values
as return value and errno value respectively.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: ISS: avoid struct timeval 2019-12-18T17:07:31+00:00 Arnd Bergmann arnd@arndb.de 2019-10-25T20:30:39+00:00 37e86e0fd0403f51d6dd49abd1469361714f6ca4 'struct timeval' will get removed from the kernel, change the one user in arch/xtensa to avoid referencing it, by using a fixed-length array instead. Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> 
'struct timeval' will get removed from the kernel, change the one
user in arch/xtensa to avoid referencing it, by using a fixed-length
array instead.

Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
xtensa: ISS: add argc/argv simcall definitions 2017-03-13T20:47:12+00:00 Max Filippov jcmvbkbc@gmail.com 2017-03-13T17:23:02+00:00 e8cd8da934f29a0aca2c4bd96310a0b6ba6e31a7 There are three simcalls implemented by ISS and QEMU related to argc/argv processing: SYS_iss_argc (get number of command line arguments), SYS_iss_argv_size (get size of command line argument block) and SYS_iss_set_argv (copy command line arguments to virtual guest address). Add definitions for these calls to iss/include/platform/simcall.h Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 
There are three simcalls implemented by ISS and QEMU related to
argc/argv processing: SYS_iss_argc (get number of command line
arguments), SYS_iss_argv_size (get size of command line argument block)
and SYS_iss_set_argv (copy command line arguments to virtual guest
address).
Add definitions for these calls to iss/include/platform/simcall.h

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: ISS: define simc_exit and use it instead of inline asm 2016-09-21T01:53:00+00:00 Max Filippov jcmvbkbc@gmail.com 2016-09-21T00:26:48+00:00 feec273a2b4d98f8aa76c5d83f24053b211c8525 A number of ISS platform functions use inline assembly to invoke simulator exit, not all correctly. Define simc_exit(exit_code) and use it instead of inline assembly. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 
A number of ISS platform functions use inline assembly to invoke
simulator exit, not all correctly. Define simc_exit(exit_code) and use
it instead of inline assembly.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: don't use a7 in simcalls 2013-05-09T08:07:10+00:00 Max Filippov jcmvbkbc@gmail.com 2013-04-15T04:39:41+00:00 f4b93ba93184c23f7a903cc790b573195fb41c37 To support FRAME_POINTER avoid using a7 in __simc (none of the existing simcalls needs it). Replace calls to __simc with more specific simc_read, simc_write and simc_lseek calls. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net> 
To support FRAME_POINTER avoid using a7 in __simc (none of the existing
simcalls needs it). Replace calls to __simc with more specific
simc_read, simc_write and simc_lseek calls.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
xtensa: properly fix missing compiler barrier in simcall 2012-12-19T05:10:21+00:00 Max Filippov jcmvbkbc@gmail.com 2012-10-22T04:42:39+00:00 288dc2b68c110cd2b14b17f047b85859bc644955 Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net> 
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>