Commit Graph

607 Commits

Author SHA1 Message Date
Keith Packard 9042d0ce65 Use remove-advertising-clause script to edit BSD licenses
This edits licenses held by Berkeley and NetBSD, both of which
have removed the advertising requirement from their licenses.

Signed-off-by: Keith Packard <keithp@keithp.com>
2020-01-29 19:03:31 +01:00
Jozef Lawrynowicz b74ba7dca6 MSP430: Support new msp430-elfbare target
Update the target triplet glob used when configuring for msp430 to
support a new msp430-elfbare target being added to gcc.
2019-12-16 10:15:06 +01:00
Anthony Green 78b7a3b0f8 Implement the unlink system call for the moxie simulator.
Corresponding support for this was just added to the gdb moxie simulator.
Unlink support is required by the GCC testsuite.
2019-12-14 05:27:38 -05:00
Jozef Lawrynowicz fa14f445ba Fix libgloss being built for disabled multilibs
Target libraries are considered to be built for GCC's "host", not GCC's
"target".  The "host" variable must be set by configure scripts using
"config-ml.in" to determine multilib support, otherwise disabled
multilibs (specified as a configure argument with --disable-<multilib>)
will still be built for the subdirectories those configure scripts
reside in.
2019-11-02 16:27:20 +01:00
Dimitar Dimitrov 0c7734673a Initial PRU port for libgloss and newlib
Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
2019-10-31 14:47:19 -04:00
Jozef Lawrynowicz 0574317971 MSP430: Add missing build rule for unlink() to libgloss Makefile 2019-10-25 18:04:46 +02:00
Sandra Loosemore fa29288ef1 Adjust nios2 and m68k semihosting for sys/stat.h changes.
Commit 72ff9acad2 caused st_atime,
st_ctime, and st_mtime to be defined as macros.  This collided with
use of these identifiers as field names in struct gdb_stat (which
represents the GDB RSP encoding of struct stat) in libgloss
semihosting support for nios2 and m68k.  This patch renames the
affected fields of struct gdb_stat.

Signed-off-by: Sandra Loosemore <sandra@codesourcery.com>
2019-09-04 09:44:35 +02:00
Jeff Law d065170441 Fix regression in visium caused by sys/stat.h change 2019-08-20 18:15:41 +02:00
Jeff Johnston b99887c428 Revert previous change to sys/stat.h and fix cris libgloss
- revert previous fix which altered sys/stat.h
- fix libgloss/cris/gensyscalls to undef st_atime, st_mtime,
  and st_ctime macros which cannot be used with new_stat structure
2019-08-19 18:01:45 -04:00
Alexander Fedotov bf56973edc Align libgloss/arm and libc/sys/arm sources: miscellaneous fixes
1. Trim trailing spaces
2. Align comments, function declarations and definitions
2019-08-05 13:00:53 +01:00
Alexander Fedotov dfffe68303 Align libgloss/arm and libc/sys/arm sources: HeapInfo and __heap_limit
Applied changes from commit 8d98f95:

	* arm/crt0.S: Initialise __heap_limit when ARM_RDI_MONITOR is defined.
	* arm/syscalls.c: define __heap_limit global symbol.
	* arm/syscalls.c (_sbrk): Honour __heap_limit.

Applied changes from commit 8d98f95:
	Fixed semihosting for ARM when heapinfo not provided by debugger
2019-08-05 13:00:53 +01:00
Faraz Shahbazker 6661a67747 Align _end symbol to at least 4 in all MIPS scripts
Left-over part of commit 84b2a020da

The _end marker must be aligned to 4-bytes to ensure that the last
element written does not reach beyond the address of _end.  This is
also necessary as the termination condition is an equality test
instead of an ordered test so (_end - _fbss) must be a multiple of
4-bytes.  The alignment is already correct for mti*.ld files, fix
it for all remaining MIPS scripts that don't already align to at
least 4.
2019-07-30 09:38:13 +02:00
Jozef Lawrynowicz 884b05b54e MSP430: Remove .init/.fini sections
The .init/.fini sections are not required for msp430-elf, and add unnecessary
code bloat to the CRT library. These sections are specified as "unused" by
the MSP430 EABI.

.init existed to call __crt0_run_{init,preinit}_array which run through
the functions in .{init,preinit}_array.
__crt0_run_{init,preinit}_array are already dynamically included like the
other crt0 functions, so these can be placed before the call to main,
which ensures they are still called if needed.
With these functions moved, .init has no purpose and can be removed.

.fini existed to call __crt0_run_fini_array.
However, the "__msp430_fini" symbol which marks the start of .fini has
never been used, so no termination routines have ever been run for
msp430. On returning from main(), _exit() is called which just loops
forever.
So there is no current expectation that __crt0_run_fini_array will
get called by the CRT code. Further work is to ensure functions
registered with atexit can be optionally called during program termination,
and then __crt0_run_fini_array can be registered with atexit during
program initialization.

The mechanisms for supporting the "-minrt" option have also been removed.
"-minrt" enabled a "minimum runtime environment" by removing calls to
functions which run global static initializers and constructors. Since
this behaviour is now dynamic, and these functions are only included
when needed, the minrt versions of the CRT object files are no longer
required.
2019-07-24 16:22:00 -04:00
Alexander Fedotov 942f60d714 Stack Pointer and Stack Limit initialization refactored.
SP initialization changes:
  1. set default value in semihosting case as well
  2. moved existing SP & SL init code for processor modes in separate routine and made it as "hook"
  3. init SP for processor modes in Thumb mode as well

Add new macro FN_RETURN, FN_EH_START and FN_EH_END.
2019-07-23 10:00:06 +02:00
Alexander Fedotov a90aa583fb Arm: Use lrdimon-v2m_nano when semihosting v2 and nano selected respectively 2019-06-25 13:38:44 -04:00
Jim Wilson 77ac27dcf8 RISC-V: Add _LITE_EXIT in crt0.S.
This patch adds _LITE_EXIT in crt0.S to enable "lite exit" technique in
RISC-V. The changes have been tested in riscv/riscv-gnu-toolchain by
riscv-dejagnu with riscv-sim.exp/riscv-sim-nano.exp.
2019-05-22 17:41:25 -07:00
Faraz Shahbazker a9a0d219a4 Make .data section placement coincide with _fdata symbol
The _fdata symbol in MIPS linker scripts is aligned to a 16-byte
boundary.  The ALIGN function does not implicitly update current
location counter.  If sections positioned after the assignment
do not have the same natural alignment as the ALIGN function then
the start of the section group will not coincide with the value
of the symbol.

Given the linker command sequence:
  symbol = ALIGN (NN);
  (.section*)
where the idiom implies a desire to mark the beginning of .section
with symbol, there must be an assignment to the location counter
between the assignment to symbol and the .section pattern.

libgloss/
	* mips/array.ld: Update the location counter to match _fdata.
	* mips/cfe.ld: Likewise.
	* mips/ddb-kseg0.ld: Likewise.
	* mips/ddb.ld: Likewise.
	* mips/dve.ld: Likewise.
	* mips/idt.ld: Likewise.
	* mips/idt32.ld: Likewise.
	* mips/idt64.ld: Likewise.
	* mips/idtecoff.ld: Likewise.
	* mips/jmr3904app-java.ld: Likewise.
	* mips/jmr3904app.ld: Likewise.
	* mips/jmr3904dram-java.ld: Likewise.
	* mips/jmr3904dram.ld: Likewise.
	* mips/lsi.ld: Likewise.
	* mips/mti32.ld: Likewise.
	* mips/mti64.ld: Likewise.
	* mips/mti64_64.ld: Likewise.
	* mips/mti64_n32.ld: Likewise.
	* mips/nullmon.ld: Likewise.
	* mips/pmon.ld: Likewise.
	* mips/sde32.ld: Likewise.
	* mips/sde64.ld: Likewise.
2019-05-15 15:30:25 -04:00
Faraz Shahbazker ab2901c843 Fix order of eh_frame sections in linker scripts
The compiler driver positions the linker script at the end of the linker
command-line, after crtend.o.  As a result, any INPUT objects and archive
GROUPs introduced by the linker script are placed after crtend.o and the
end-of-frame marker provided by crtend.o ends up in between .eh_frames
instead of being at the end.

This has always been a problem, but a binutils update to clean-up
redundant NULL markers in .eh_frame exposes it as a execution failure in
exception-handling tests.  This patch re-orders .eh_frames in all
MIPS linker scripts so that the one from crtend.o is always placed last.

libgloss/
	* mips/array.ld: Re-order to place .eh_frame from crtend.o
	after all other .eh_frame sections.
	* mips/cfe.ld: Likewise.
	* mips/ddb-kseg0.ld: Likewise.
	* mips/ddb.ld: Likewise.
	* mips/dve.ld: Likewise.
	* mips/idt.ld: Likewise.
	* mips/idt32.ld: Likewise.
	* mips/idt64.ld: Likewise.
	* mips/jmr3904app.ld: Likewise.
	* mips/lsi.ld: Likewise.
	* mips/mti32.ld: Likewise.
	* mips/mti64.ld: Likewise.
	* mips/mti64_64.ld: Likewise.
	* mips/mti64_n32.ld: Likewise.
	* mips/nullmon.ld: Likewise.
	* mips/pmon.ld: Likewise.
	* mips/sde32.ld: Likewise.
	* mips/sde64.ld: Likewise.
2019-04-29 10:44:24 +02:00
Jozef Lawrynowicz f811485ffb MSP430: Make the inclusion of run_*_array fns depend on defined assembler symbols
Many of the MSP430 crt functions (e.g. to initialize bss) are linked
"dynamically", based on symbols defined in the program.
The GNU assembler defines the symbols corresponding to the crt
functions by examining the section names in the input file.

If GCC has been configured with --enable-initfini-array, then
.init_array and .fini_array will hold pointers to global
constructors/destructors. These sections can also hold functions that
need to be executed for other purposes.

The attached patch puts the __crt0_run_{preinit,init,fini}_array and
__crt0_run_array functions in their own object files, so they will
only be linked when needed.

Successfully regtested the DejaGNU GCC testsuite using the binutils and
newlib changes together with GCC trunk configured with
--enable-initfini-array.
2019-04-18 10:29:24 +02:00
Jozef Lawrynowicz 38ecf252e5 Fix incorrect assembly code in _msp430_run_array 2019-04-16 13:23:46 +02:00
Jozef Lawrynowicz a2e81650d1 Fix definition of write() to use const char * for the type of the buffer 2019-04-15 14:21:59 +02:00
Alexander Fedotov a0b0a4a018 Align comments and spaces in libgloss/arm/crt0.S and newlib/libc/sys/arm/crt0.S to ease further code alignment. 2019-04-12 14:34:47 +01:00
Christophe Lyon cc430406ac Include code in trap.S for APCS only.
The code in trap.S is to support the old APCS chunked stack variant,
which dates back to the Acorn days, so put it under #ifndef
__ARM_EABI__.

	* libgloss/arm/trap.S: Use __ARM_EABI rather than PREFER_THUMB.
	* newlib/libc/sys/arm/trap.S: Use __ARM_EABI rather than
	__thumb2__.
2019-04-11 14:20:21 +00:00
Sandra Loosemore c4c6140463 Add a dummy interrupt handler to nios2 crt0.s.
The location of the handler at offset 0x20 from the start of memory,
immediately after the 32-byte reset vector, matches the expectations
of real hardware (e.g., a 3c120 board).
2019-04-03 18:02:47 +02:00
Jeff Johnston 1cff36cdd7 Add semihosting docs for nios2 and m68k
Author: Sandra Loosemore <sandra@codesourcery.com>
Date:   Wed Mar 13 20:22:16 2019 -0700

    Add semihosting documentation for nios2 and m68k.

    QEMU maintainers have asked for a specification of the nios2
    semihosting interface.  Since it's essentially a copy of the m68k
    implementation, this patch adds a document for that target as well.
2019-03-14 10:23:25 -04:00
Tamar Christina 1ba66fe8fa AArch32: Fix the build for M class semihosting
The M class cores don't support Semihosting v2 mixed mode, but we were
accidentally using the new immediates for it.  My last patch changed the
immediates which broke the build because doing a full multi-lib build
including M architectures now results in an assembler error instead of
silently doing the wrong thing.

This fixes the issue by changing the defines around such that According
to the specs any M class build uses the normal semihosting instructions.

Regtested on arm-none-eabi and no issues, using a build with m class
multilibs too.
2019-02-11 12:49:23 +01:00
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
Jim Wilson 7e72be1c39 Add libgloss install-pdf and install-html targets.
The toplevel makefile used by binutils/gcc/newlib/etc has install-pdf and
install-html targets, but they fail because libgloss doesn't support them.
Tested with an arm-eabi combined tree build and install, and verifying that
the install-pdf and install-html targets now work, and that the pdf and html
doc files are now in the install tree.

	libgloss/
	* Makefile.in (install-html, install-pdf): New.
	* doc/Makefile.in (htmldir, pdfdir): New.
	(porting.ps): Delete white space on blank line.
	(install-pdf, install-html): New.
2018-11-20 11:13:34 +01:00
Matthew Malcomson 6dbd190111 Enable return code with semi-hosting SYS_EXIT_EXTENDED
The _exit function currently passes -1 as a "sig" to the _kill function as an
invalid signal number so that _kill can distinguish between an abort and a
standard exit.

For boards using the SYS_EXIT_EXTENDED semi-hosting operation to return a
status code, this means that the "status" paramter to _exit is ignored and the
return code is always -1.
https://developer.arm.com/docs/100863/latest/semihosting-operations/sys_exit_extended-0x20

This patch puts shared code between _kill and _exit into a new function
_kill_shared that takes the semi-hosting "reason" to use (if semi-hosting is
available) as an argument.

For semi-hosting _kill_shared provides that "reason".

Without the "sig" argument being used to distinguish between a normal and
abnormal exit, the _exit function can provide the return code to be used if the
SYS_EXIT_EXTENDED operation is available.

Hence the exit code can be returned.
2018-11-19 13:46:19 +01:00
Tamar Christina 9a7f131e0e Initialize SVE system registers.
This patch initializes the SVE system registers if available
and initializes the vector length to the maximum supported.

This is done according to the SVE specification [1].

[1] https://developer.arm.com/docs/ddi0584/latest/arm-architecture-reference-manual-supplement-the-scalable-vector-extension-sve-for-armv8-a
2018-10-31 11:14:57 +00:00
Christophe Lyon b6ba19e355 [Aarch64] Syscalls: fix prototypes
This patch is similar the arm one committed recently.

2018-10-08  Christophe Lyon  <christophe.lyon@linaro.org>

	* libgloss/aarch64/syscalls.c (_sbrk): Fix prototype.
	(_getpid, _write, _swiwrite, _lseek, _swilseek, _read, _wriread):
	Likewise.
2018-10-08 14:39:16 +01:00
Christophe Lyon 8a7536e91d [ARM] Make _kill() a noreturn function.
AngelSWI_Reason_ReportException does not return accoring to the ARM
documentation, so it is valid to mark _kill() as noreturn.  This way,
the compiler does not warn about _exit() returning a value despite
being noreturn.

2018-10-01  Christophe Lyon  <christophe.lyon@linaro.org>

	* libgloss/arm/_exit.c (_exit): Declare _kill() as noreturn.
	* libgloss/arm/_exit.c (_kill): Likewise. Remove the return
	statements.
	* newlib/libc/sys/arm/syscalls.c (_kill): Likewise..
2018-10-08 14:35:43 +01:00
Christophe Lyon 9edf0810db [Aarch64] Fix warning in _sbrk
2018-10-01  Christophe Lyon  <christophe.lyon@linaro.org>

    	* libgloss/aarch64/syscalls.c (_sbrk): Cast "__heap_limit" to
    	"char *".
2018-10-05 13:21:54 +01:00
Hans-Peter Nilsson a6837ca34f Committed, CRIS port: fix fallout from time_t defaulting to 64 bits, part 1
It's been a while...  I see the CRIS port broke with the
time_t-default-to-64-bit change, observable by a few test-cases in the
gcc fortran(!) tests failing, regressing when trying a recent newlib.

This is a two-part belt-and-suspenders change: adjust the CRIS port
gettimeofday syscall (the only one in newlib/CRIS passing a time_t or
struct timeval) to handle a userspace 64-bit time_t and secondly default
time_t to 32-bit long anyway.  I considered making the local
"kernel_timeval" copy in _gettimeofday conditional on (userspace) time_t
being 64 bits, but thought it not worth bothering with the few move insns.
The effect of a 64-bit time_t is however observable as longer simulation
time when running the gcc testsuite and as bigger binaries without any
actual upside from the larger time_t size, so I thought better make the
default for this port go back to being a "long" again.

Tested by running the gcc testsuite over the three combinations of two
parts of the patch and observing the expected changes.  Committed.

libgloss:
	Adjust for syscall and userspace having different time_t or timeval.
	* cris/linunistd.h (kernel_time_t, kernel_suseconds_t, kernel_timeval):
	New types.
	(gettimeofday): Change the type of the first argument to be a
	pointer to a struct kernel_timeval.
	* cris/gensyscalls (_gettimeofday): Use an intermediate struct
	kernel_timeval for the syscall and initialize the result from
	that.

Signed-off-by: Hans-Peter Nilsson <hp@axis.com>
2018-09-13 17:57:11 +02:00
Denis Ivanov 9e032fd939 RISC-V: Fix _sbrk, it's failed only when return value is -1.
Signed-off-by: Kito Cheng <kito.cheng@gmail.com>
2018-08-29 15:49:00 +02:00
Denis Ivanov 258996b696 RISC-V: Fixed return code in _times syscall.
Upon successful completion, times() shall return the elapsed real time,
in clock ticks, since an arbitrary point in the past (for example,
system start-up time).

Signed-off-by: Kito Cheng <kito.cheng@gmail.com>
2018-08-29 15:49:00 +02:00
Sandra Loosemore fddc74d12b Add BSP and semihosting library for nios2-generic-nommu QEMU emulation. 2018-08-08 10:53:03 +02:00
Jeff Johnston 2ec54fb1d1 Patch from Richard Earnshaw <Richard.Earnshaw@arm.com>
* aarch64/cpu-init/rdimon-aem-el3.S (cpu_init_hook): Simplify
  entry/exit sequences.  Add CFI unwind rules.
2018-08-01 14:02:56 -04:00
Sebastian Huber 6158b30e3e RISC-V: Do not use _init/_fini
Introduce new host configuration variable "have_init_fini" which is set
to "yes" by default.  Override it for RISC-V to "no".

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2018-07-30 10:47:57 +02:00
Tamar Christina 430b529111 Fix AArch32 semihosting SYS_EXIT call on semihosting v1.
The current SYS_EXIT has a bug that when making the call it always uses
the v2 calling convention.  This is undefined behavior according to the
semihosting specification:
https://developer.arm.com/docs/100863/latest/semihosting-operations/sys_exit-0x18

This patch fixes it by making sure v1 passes the argument directly in the register instead
of in a block. And for v2 it does the same if the v2 extension isn't supported.

The sequence generated now is

   12424:       ebfffecd        bl      11f60 <_has_ext_exit_extended>
   12428:       e3500000        cmp     r0, #0
   1242c:       11a0500d        movne   r5, sp
   12430:       059d5000        ldreq   r5, [sp]
   12434:       e1a00004        mov     r0, r4
   12438:       e1a01005        mov     r1, r5
   1243c:       ef00f000        svc     0x0000f000

Signed-off-by: Tamar Christina <tamar.christina@arm.com>
2018-07-11 17:18:04 +02:00
Ben Levinsky 28627a5a03 libgloss: microblaze: adjust handlers to be weak.
Previously, hw exception handler stub and interrupt handler stub for microbaze were unable to
be overwritten. Change to weak to fix this.

Signed-off-by: Ben Levinsky <ben.levinsky@xilinx.com>
2018-05-03 15:16:13 -04:00
Jaap de Wolff bc9b30ea77 add forward declaration to main() to prevent warnings 2018-02-16 12:16:08 +01:00
Jaap de Wolff c9d4bac58c adapt prototypes arm/syscalls.c to usual prototypes, and do not rely on implicit conversions 2018-02-16 12:16:07 +01:00
Chih-Mao Chen f2c9e55faf RISC-V: isatty: return 0 on error 2018-01-18 09:21:10 +01:00
Yaakov Selkowitz 7192f84096 ansification: remove _HAVE_STDC
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:30 -06:00
Yaakov Selkowitz 70ee6b17df ansification: remove _EXFUN, _EXFUN_NOTHROW
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:29 -06:00
Yaakov Selkowitz 9087163804 ansification: remove _DEFUN
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:26 -06:00
Yaakov Selkowitz 67ee0cac4c ansification: remove _VOID
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:20 -06:00
Yaakov Selkowitz fff27f8429 ansification: remove _DEFUN_VOID
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:19 -06:00
Yaakov Selkowitz eea249da3b ansification: remove _PARAMS
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:13 -06:00