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Author SHA1 Message Date
Ariadne Conill c1ecb0ea59 x86: switch back to using x86-specific trampoline 
Jumping into the generic trampoline causes the stack pointer to get
clobbered.

Fixes #61
 2024-08-07 18:34:53 -07:00
Ariadne Conill 5445f70157 tests: libucontext_posix: quiet compiler warning on glibc 2024-08-07 17:57:16 -07:00
Ariadne Conill 1a2dff93e7 build: migrate to _DEFAULT_SOURCE 2024-08-07 17:54:35 -07:00
L. Pereira 7badd2d5b2 Set _XOPEN_SOURCE when building on Darwin 
On non-freestanding builds, including <ucontext.h> on an ARM Darwin
system will produce the following error:

  In file included from include/libucontext/bits.h:6:
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/
	usr/include/ucontext.h:51:2: error: The deprecated
	ucontext routines require _XOPEN_SOURCE to be defined

Defining this macro on Darwin systems will make the building pass.
 2024-08-07 17:49:36 -07:00
Jim Hauxwell 4975ba9051 fix file copy 2024-08-07 17:48:29 -07:00
Jim Hauxwell b3cbfd9c1a fix parallel build for makefile 
The copy for bits.h ran in parallel with the initial CC.  sometimes on
CI the build would fail as the file had not arrived by the time
needed.  Fix matches meson build process.
 2024-08-07 17:48:29 -07:00
Sören Tempel d0b03541bf common-trampoline: Ensure omission of frame-pointer 
Some architecture-specific implementations of the FETCH_LINKPTR
(e.g. the one for x86) attempt to find the linkptr relative to the
stack pointer. Therefore, they make assumption about the value of
the SP at the point where the FETCH_LINKPTR code is executed. This
means that we don't want the C compiler to mess with our SP.

For this purpose, local variables in this function are currently
declared using the register storage specifier. Additionally, we
need to make sure that a frame pointer is /always/ omitted for
this function. On x86 Alpine, the frame pointer is presently not
omitted with GCC 13 when using -Os, therefore the tests segfault
with -Os on Alpine presently.

Fixes #52
 2024-08-07 17:46:50 -07:00
Volker Christian 124a962b39 aarch64: fix return value if getcontext was used to acquire the current context. 
x0 hast to be 0 in case setcontext is called with a context acquired by getcontext.
Thus x0=0 must be stored in getcontext.
 2024-08-07 17:45:47 -07:00
Volker Christian 9e5de65076 libucontext: Add patch fixing return values of get/set/swapcontext 
The arm ABI defines that the value in register r0 is used as the return
value of a function. To indicate success for get/set/swapcontext (return
value of 0) the register r0 must contain zero at the end of the function
call. Thus set r0 to zero and store it in the context. This context
is restored later and indicate successful execution, because r0 is 0.

The order registers are stored has changed so that only one additional
instruction (mov r0, #0) needs to be added to fix the return value
bug for get/set/swapcontext.

Signed-off-by: Volker Christian <me@vchrist.at>
 2024-08-07 17:44:43 -07:00
Volker Christian 076e69c9c1 libucontext: Add error checking 
Add error checking test_libucontext and test_libucontext_posix
to test return values of get/set/swapcontext.

Modifications are inspired by the example program source in the
linux man page of swapcontext

Signed-off-by: Volker Christian <me@vchrist.at>
 2024-08-07 17:43:55 -07:00
matoro be80075e95 meson: support building docs 
Toggleable with -Ddocs=(true|false), defaults to false.

Requires bumping minimum meson version to 0.59.0, or 0.61.0 to also
include symlinks.
 2023-05-18 18:12:55 -07:00
Ariadne Conill 4c2cfc54ac libucontext.h: add C++ externs 2023-05-18 18:11:50 -07:00
L. Pereira 0f625a86ee Fix FREESTANDING install target 
When installing a FREESTANDING build, the check for an empty variable
was not being honored because the empty string would evaluate to
nothing.  Put the variable expansion in quotes so that we have an empty
string instead.
 2023-05-18 18:10:01 -07:00
Ismael Luceno 8e1397f5a2 Makefile: Make variables Automake-compatible 
Also split libdir into shared and static variants to enable installing to
different locations.

Signed-off-by: Ismael Luceno <ismael@iodev.co.uk>
 2023-05-18 18:08:07 -07:00
Ariadne Conill 33ff253d52 Merge pull request 'Fixed empty TYPE(__proc) causing linker issues on 32-bit arm' (#36) from rlcamp/libucontext:arm_linker_fix into master 
Reviewed-on: ariadne/libucontext#36
 2022-03-24 08:57:53 +00:00
Richard Campbell 3044c2b908 Fixed empty TYPE(__proc) causing linker issues on 32-bit arm 2022-03-23 15:18:39 -07:00
Ariadne Conill 128e4fdc4b Merge pull request 'arm_hard_float' (#35) from rlcamp/libucontext:arm_hard_float into master 
Reviewed-on: ariadne/libucontext#35
 2022-03-23 20:15:32 +00:00
Richard Campbell 5244775fb9 Added note to readme about floating point WIP 2022-03-04 10:41:54 -08:00
Richard Campbell 9abcd8afe0 Added passthrough of FORCE_SOFT_FLOAT and FORCE_HARD_FLOAT Makefile options 2022-03-04 10:40:30 -08:00
Richard Campbell 7bc3e90984 Added arm conditional vfp save/restore 2022-03-04 10:35:25 -08:00
Ariadne Conill 4dde3417b4 libucontext 1.2 2022-02-13 09:17:12 +00:00
Ariadne Conill 6ec3e63877 NEWS: mention or1k port 2022-02-13 09:08:46 +00:00
Ariadne Conill 69ebc5e51b README: add or1k 2022-02-13 09:07:36 +00:00
Ariadne Conill 0a72eff002 or1k: add freestanding bits 2022-02-13 09:06:58 +00:00
Ariadne Conill 973e61441a or1k: add getcontext/setcontext/swapcontext 2022-02-13 08:58:38 +00:00
Ariadne Conill 00128f7575 or1k: add makecontext and trampoline 2022-02-13 08:58:03 +00:00
Ariadne Conill 7fc08a6dc6 or1k: add definitions 2022-02-13 08:57:36 +00:00
Ariadne Conill e26a93806e build: allow check_libucontext program to be run on its own like the other check steps 2022-02-13 08:54:34 +00:00
Ariadne Conill 5d2f30f96a build: check_libucontext_posix must depend on ${LIBUCONTEXT_SONAME} 2022-02-13 08:53:45 +00:00
Ariadne Conill a51dce6e2c common-trampoline: initialize link pointer to NULL 2022-02-13 07:35:23 +00:00
Ariadne Conill a5ed584aa8 build: ensure libucontext_posix.so.1 is cleaned up 2022-02-13 07:18:19 +00:00
Ariadne Conill 9943d4f5fc NEWS: prepare for 1.2 2022-02-13 06:38:00 +00:00
Ariadne Conill 9403b481bc build: use CPPFLAGS instead of CFLAGS for FREESTANDING/EXPORT_UNPREFIXED 2022-02-13 06:25:47 +00:00
Ariadne Conill 2c0c0e5d29 build: only set default CFLAGS if there are none already set 2022-02-13 06:25:11 +00:00
Ariadne Conill c8fe721e69 build: fix linking of libucontext_posix against libucontext 2022-02-13 06:19:47 +00:00
Ariadne Conill c50182d98c build: disable executable stacks 2022-02-13 06:11:37 +00:00
Ariadne Conill 55c91428ba build: use -shared correctly instead of as linker flag 2021-12-18 16:54:17 +00:00
Ariadne Conill 18aa732212 CI: also build armv7 2021-12-01 09:36:20 -06:00
Ariadne Conill 8215aedb56 add woodpecker pipeline 2021-12-01 09:33:12 -06:00
Ariadne Conill 8efa9e8b85
Merge pull request #34 from Torrekie/master 
Allow building on Darwin/arm64
 2021-11-14 21:27:26 -06:00
Torrekie Gen 6ddefbbbb4
Allow building on Darwin/arm64 
Changes:
1. `-soname` should be `-install_name` on Darwin
2. Version suffix should placed before extension suffix (libucontext.so.1 -> libucontext.1.dylib)
3. Check for architecture specific include directory, and include it while building
4. `EXPORT_UNPREFIXED` macro shouldn't be set since Darwin don't support aliases
5. Choose correct subdir for arm64
6. Use `-dynamiclib` instead of `-shared` on Darwin for adding version info (`-current_version` and `-compatibility_version`)
 2021-11-13 19:10:25 +08:00
Ariadne Conill b1b4fe9665
Merge pull request #32 from rlcamp/master 
Adjusted location within ucontext of saved/restored FP regs for compat
 2021-07-31 13:38:54 -05:00
Richard Campbell 1e37bf30f9 Adjusted location within ucontext of saved/restored FP regs for compatibility 2021-07-30 12:45:12 -07:00
Ariadne Conill 14d9859c00
Merge pull request #31 from rlcamp/master 
Added saving/restoring of bottom 64 bits of d8-d15 per AAPCS64
 2021-07-29 20:49:13 -05:00
Richard Campbell 06303df1cd Added saving/restoring of bottom 64 bits of d8-d15 per AAPCS64 2021-07-29 18:45:48 -07:00
Ariadne Conill ae058b1f38 add loongarch64 to the supported arch list 2021-06-04 09:07:38 -06:00
Peng Fan a182fee66a Add support for Loongarch64 
Signed-off-by: Peng Fan <fanpeng@loongson.cn>
 2021-06-04 09:07:38 -06:00
Ariadne Conill 0108623531
Merge pull request #28 from kraj/master 
meson: Add option to pass cpu
 2021-05-30 11:00:18 -05:00
Khem Raj a530eed9e7 meson: Add option to pass cpu 
This helps with cross compile setups, where host_cpu != target_cpu
therefore detecting it on the fly will end up with wrong cpu to build
for

Signed-off-by: Khem Raj <raj.khem@gmail.com>
 2021-05-30 08:38:54 -07:00
Ariadne Conill 335ee864ef libucontext 1.1. 2021-03-09 00:46:31 -07:00