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24 Commits (4975ba90519f5d38fd206476cc358ff3a7d83eb3)

Author SHA1 Message Date
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
Richard Campbell 3044c2b908 Fixed empty TYPE(__proc) causing linker issues on 32-bit arm 2022-03-23 15:18:39 -07:00
Richard Campbell 7bc3e90984 Added arm conditional vfp save/restore 2022-03-04 10:35:25 -08:00
Ariadne Conill fb1d203677 everywhere: drop _GNU_SOURCE requirement 2021-03-09 00:25:13 -07:00
osy f3e1b876c7 project: move freestanding include headers 
This is needed because in libucontext.h we include "libucontext/bits.h".
We therefore need to have bits.h in somepath/libucontext/bits.h. In the
Makefile, somepath/freestanding/bits.h was copied to the right path but
in the meson build system, the include copy happens at the end.
 2021-03-08 13:02:27 -08:00
Ariadne Conill 09f78ddc28 alias __makecontext too 2021-01-08 10:37:27 +00:00
osy fffb55011b arm: fix broken FETCH_LINKPTR 2021-01-08 03:20:14 -07:00
osy f7eed30132 build: guard _GNU_SOURCE define if build system defines it 2021-01-08 03:16:05 -07:00
osy d31c95a11a build: remove -DLIBUCONTEXT_ASSEMBLY 
Meson does not support separate defines for .S compile.
 2021-01-08 03:11:25 -07:00
osy 73d5e101ad build: respect EXPORT_UNPREFIXED for libucontext_makecontext 2021-01-08 03:02:43 -07:00
osy e1e6508af2 defs: use register output only for FETCH_LINKPTR 2021-01-08 02:59:43 -07:00
Ariadne Conill 39a2958561 add previous ABI symbols 2021-01-08 02:30:50 -07:00
Ariadne Conill afcca79d7b arm: move to C trampoline 2020-12-12 06:40:27 +00:00
Ariadne Conill f3f52fc17c arm: add freestanding port 2020-12-06 13:43:04 +00:00
Ariadne Conill c31decc3d4 build: use internal definitions to replace things pulled in from ucontext.h 2020-12-06 03:44:45 -06:00
Ariadne Conill e65e485630 everywhere: rename __swapcontext to libucontext_swapcontext 2020-12-06 03:04:22 -06:00
Ariadne Conill 37fe7afd5f everywhere: rename __setcontext to libucontext_setcontext 2020-12-06 03:03:07 -06:00
Ariadne Conill 99ed5bbe12 everywhere: rename __getcontext to libucontext_getcontext 2020-12-06 03:02:25 -06:00
Ariadne Conill 2f31efaa95 everywhere: rename __start_context to better descriptive libucontext_trampoline 2020-12-06 02:59:59 -06:00
Ariadne Conill c693dc663c rename __makecontext to libucontext_makecontext 2020-12-06 02:56:59 -06:00
Ariadne Conill b1ea2ae83b everywhere: use ucontext.h instead of signal.h for pulling in ucontext definitions 
This allows building libucontext against newlib.
 2020-12-04 11:19:02 -07:00
Ariadne Conill f708c95659 arm: modernize 2020-03-30 05:04:18 +00:00
Ariadne Conill d31eaabbaf update copyright statements, add mailmap 2020-03-27 09:23:49 +00:00
William Pitcock 247f30400c arch: arm: add armv6+ port 2018-01-31 04:11:46 +00:00