14 Commits (2e15b383272fafbbb92882990b8f339e2c6888d2)

Author	SHA1	Message	Date
Gabriel Ivașcu	2e15b38327	Makefile: Handle static library at clean/install	2019-04-12 10:48:24 +03:00
Gabriel Ivașcu	9cc1a2c0e6	Build static library too	2019-04-09 16:07:39 +03:00
Bobby Bingham	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
William Pitcock	f0741bc7a0	build: use -lucontext instead of libucontext.so in linker flags for test program	2018-02-15 04:41:22 +00:00
William Pitcock	70089a405c	build: use absolute path for LD_LIBRARY_PATH when testing	2018-02-14 03:30:50 +00:00
William Pitcock	0188f29771	build: remove test_libucontext on make clean	2018-02-14 03:01:35 +00:00
William Pitcock	c28af0399e	build: rebuild test program if it is modified	2018-02-01 01:27:13 +00:00
William Pitcock	3f63152bbc	build: add -Iarch/${ARCH} to CFLAGS	2018-01-31 20:37:00 +00:00
William Pitcock	b686d707b2	build: fix arch detection	2018-01-31 05:58:26 +00:00
William Pitcock	a6dfb59ef2	build: default ARCH to $(uname -m)	2018-01-31 04:13:32 +00:00
William Pitcock	f17103b6f4	build: build testsuite with -ggdb3	2018-01-31 04:12:09 +00:00
William Pitcock	29225e0974	build: add libucontext test program	2018-01-30 03:53:04 +00:00
William Pitcock	da10e5a66d	implement ucontext functions on x86_64	2018-01-30 03:41:02 +00:00
William Pitcock	6062fc83b1	don't bother with glibc stuff afterall, kernel defines ABI to use	2018-01-29 21:50:49 +00:00