Ariadne Conill
131e825f50
x86: add freestanding port
2020-12-06 11:37:19 +00:00
Ariadne Conill
9c0ffd8fbb
x86: fix conflicts with musl headers + freestanding adaptations
2020-12-06 11:24:23 +00:00
Ariadne Conill
9aef11752f
x86_64: add freestanding port
2020-12-06 03:22:27 -07:00
Ariadne Conill
a8415a0c4e
m68k: add freestanding bits.h file
2020-12-06 03:53:45 -06:00
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
40c8016144
bits: alias greg_t as libucontext_greg_t in non-freestanding builds
2020-12-06 03:40:55 -06:00
Ariadne Conill
0953d71ed1
build: fill in more details for freestanding builds
2020-12-06 03:31:48 -06:00
Ariadne Conill
2979186379
common: define libucontext_ucontext_t for non-freestanding case
2020-12-06 03:18:41 -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
fe19127c66
build: add support for EXPORT_UNPREFIXED=no
...
In an EXPORT_UNPREFIXED=no build, getcontext/makecontext/setcontext/swapcontext
symbols are not provided.
2020-12-06 02:54:01 -06:00
Ariadne Conill
15ba7b039c
m68k: add startcontext trampoline
2020-12-06 02:24:49 -06:00
Ariadne Conill
5f6135c0f9
m68k: fixups for makecontext
2020-12-06 02:24:05 -06:00
Ariadne Conill
22520be2de
m68k: fix register layout off by one
2020-12-06 00:52:05 -06:00
Ariadne Conill
89536b198d
m68k: add swapcontext
2020-12-06 00:04:50 -06:00
Ariadne Conill
c462af8a3c
m68k: implement getcontext and setcontext
2020-12-05 23:54:36 -06:00
Ariadne Conill
76f1fd75b8
m68k: add makecontext() implementation
2020-12-05 23:30:39 -06:00
Ariadne Conill
5ee9c4e8a5
m68k: add register definitions
2020-12-05 23:22:40 -06:00
Ariadne Conill
a6e76834d7
riscv64: align ucontext register access with musl 1.2 headers
2020-12-05 20:07:34 -07:00
5928947223
riscv64: fix PIC-incompatible assembly
2020-12-05 18:53:49 -07:00
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
34472b8884
riscv64: chase musl ab3eb89a8b83353cdaab12ed017a67a7730f90e9 changes
2020-12-03 18:25:04 -07:00
Ariadne Conill
e11fa34822
riscv64: add makecontext() and __start_context() trampoline
2020-05-18 03:19:22 +00:00
Ariadne Conill
e9308ef58f
riscv64: add swapcontext
2020-05-18 02:48:28 +00:00
Ariadne Conill
e32eb6ef59
riscv64: implement getcontext/setcontext
2020-05-18 02:43:27 +00:00
Ariadne Conill
4d42f482dc
riscv64: add architectural defines
2020-05-18 02:19:14 +00:00
b6732f6884
Remove using .end directive with clang
...
Clang does not support this asm directive
Fixes Issue #19
Signed-off-by: Khem Raj <raj.khem@gmail.com>
2020-04-10 11:23:39 -07:00
467ee2916d
x86: Update copyright statement
...
Commit d0ccf2f96fAdelieLinux/libucontext@aaeb73ea – but it didn't include the
addition of my author line.
The full commit text, for future documentation/reference, was:
```
x86: Write link pointer at correct stack offset
It must come *after* the parameters, not *before*.
```
Fixes: d0ccf2f96faaeb73ea70
2020-03-30 17:25:30 -05:00
Ariadne Conill
d7d746f44e
s390x: modernize assembly code
2020-03-30 01:12:07 -05:00
Ariadne Conill
ef42ad682a
s390x: fix makecontext(3) implementation for passing arguments via stack
2020-03-30 01:04:16 -05:00
Ariadne Conill
f708c95659
arm: modernize
2020-03-30 05:04:18 +00:00
Ariadne Conill
fb27ad693b
aarch64: modernize
2020-03-30 04:38:53 +00:00
Ariadne Conill
b04da78fb8
mips: use REG_OFFSET
2020-03-30 04:07:41 +00:00
Ariadne Conill
08e8a41d6c
mips64: use REG_OFFSET
2020-03-30 04:05:00 +00:00
Ariadne Conill
add34ddac7
mips: add MIPS O32 ABI implementation ( closes #2 )
2020-03-29 15:54:32 +00:00
Ariadne Conill
d0ccf2f96f
x86: modernize
2020-03-29 15:04:03 +00:00
Ariadne Conill
d8cfe83e34
common: use REG_SZ, not SZ_REG in line with mips64 port for REG_OFFSET macro
2020-03-29 14:50:38 +00:00
Ariadne Conill
8631580fbb
mips64: use ALIAS() macro for aliases
2020-03-29 14:37:13 +00:00
Ariadne Conill
e00902b5b1
x86_64: modernize implementation
2020-03-29 14:27:40 +00:00
Ariadne Conill
2411cdfb54
common: add REG_OFFSET accesso
2020-03-29 14:27:19 +00:00
Ariadne Conill
c385d69aa9
common: add ALIAS() macro
2020-03-29 14:12:23 +00:00
Ariadne Conill
fd32a2fa8c
common: factor out .ent handling
2020-03-29 14:03:18 +00:00
Ariadne Conill
2f4eb16f38
mips64: factor out frame management macros into arch/common/common-defs.h
2020-03-29 13:49:57 +00:00
Ariadne Conill
7c60f4576c
mips64: elide emulation of the magic flag crap glibc does
2020-03-29 13:40:32 +00:00
Ariadne Conill
80a6ca3854
add mips64 implementation
2020-03-29 12:05:52 +00:00
Ariadne Conill
d31eaabbaf
update copyright statements, add mailmap
2020-03-27 09:23:49 +00:00
2610c7faa7
ppc32/64: rewrite get/set/swapcontext in assembly
...
getcontext cannot be correctly implemented in C.
If this calls another function, as it does to call syscall, it needs to
first spill its return address to the stack. If, after getcontext returns,
its caller then calls other functions, this saved return address can be
clobbered. When the context saved by getcontext is later restored, the
(now clobbered) return address will be reloaded from the stack, and the
second return from getcontext will return to the wrong location.
Because the powerpc swapcontext syscall allows either the old context or
new context pointers to be null, it is usable for implementing all of
get/set/swapcontext.
We therefore rewrite swapcontext in assembly, and get/setcontext as simple
assembly function wrappers around swapcontext.
The one piece we keep in C is the code to check the return value of the
system call and to set errno. This code was actually unnecessary before --
libc does this within syscall. However, now that the system call is made
directly in assembly, bypassing libc, it is truly necessary. Because errno
is thread-local and the details of how to set it can vary by libc, this
code remains written in C.
2019-04-05 14:44:54 -05:00
Ariadne Conill
Drew DeVault