From 283d85ff0a0b7248c125a87c83aff889c7061a25 Mon Sep 17 00:00:00 2001
From: root <root>
Date: Tue, 24 Jul 2001 19:52:55 +0000
Subject: *** empty log message ***
---
coro.c | 28 +++++++++++++++++++++++-----
coro.h | 15 +++++++++++----
2 files changed, 34 insertions(+), 9 deletions(-)
diff --git a/coro.c b/coro.c
index bc34ea7..77f628b 100644
--- a/coro.c
+++ b/coro.c
@@ -32,7 +32,7 @@
#include "coro.h"
-#if CORO_LOOSE || CORO_SJLJ
+#if CORO_LOOSE || CORO_SJLJ || CORO_LINUX
#include <signal.h>
@@ -91,7 +91,7 @@ void coro_create(coro_context *ctx,
makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
-#elif CORO_SJLJ || CORO_LOOSE
+#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX
# if CORO_SJLJ
stack_t ostk, nstk;
@@ -151,11 +151,29 @@ void coro_create(coro_context *ctx,
sigprocmask (SIG_SETMASK, &osig, 0);
-# elif MS_LOOSE
+# elif CORO_LOOSE
- coro_save (ctx);
+ setjmp (ctx->env);
ctx->env[7] = (int)((char *)sptr + ssize);
- ctx->env[8] = (int)coro;
+ ctx->env[8] = (int)coro_init;
+
+# elif CORO_LINUX
+
+ setjmp (ctx->env);
+#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
+ && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(JB_PC) && defined(JB_SP)
+ ctx->env[0].__jmpbuf[JB_PC] = (int)coro_init;
+ ctx->env[0].__jmpbuf[JB_SP] = (int)((char *)sptr + ssize);
+#elif defined(__GLIBC__) && defined(__GLIBC_MINOR__) \
+ && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined(__mc68000__)
+ ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
+ ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize);
+#elif defined(__GNU_LIBRARY__) && defined(__i386__)
+ ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
+ ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
+#else
+#error "Unsupported Linux (g)libc version and/or platform"
+#endif
# endif
diff --git a/coro.h b/coro.h
index dfde95f..56c11d2 100644
--- a/coro.h
+++ b/coro.h
@@ -57,8 +57,13 @@
* do it's job. Coroutine creation is much slower than UCONTEXT, but
* context switching is often a bit cheaper. It should work on almost
* all unices. Use this for GNU/Linux + glibc-2.2. glibc-2.1 and below
- * do not work with any model (neither sigaltstack nor context functions
- * are implemented)
+ * do not work with any sane model (neither sigaltstack nor context
+ * functions are implemented)
+ *
+ * -DCORO_LINUX
+ *
+ * Old GNU/Linux systems (<= glibc-2.1) work with this implementation
+ * (very fast).
*
* -DCORO_LOOSE
*
@@ -108,9 +113,11 @@ void coro_transfer(coro_context *prev, coro_context *next);
* That was it. No other user-visible functions are implemented here.
*/
-#if !defined(CORO_LOOSE) && !defined(CORO_UCONTEXT) && !defined(CORO_SJLJ)
+#if !defined(CORO_LOOSE) && !defined(CORO_UCONTEXT) \
+ && !defined(CORO_SJLJ) && !defined(CORO_LINUX)
# if defined(WINDOWS)
# define CORO_LOOSE 1 /* you don't win with windoze */
+# elif defined(__linux) && defined(__x86)
# elif defined(HAVE_UCONTEXT_H)
# define CORO_UCONTEXT 1
# elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK)
@@ -130,7 +137,7 @@ struct coro_context {
#define coro_transfer(p,n) swapcontext(&((p)->uc), &((n)->uc))
-#elif CORO_SJLJ || CORO_LOOSE
+#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX
#include <setjmp.h>
--
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