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Rework of kernel build signal dispatch to user-space handlers

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5778 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2013-03-23 14:46:02 +00:00
parent 2a77c20228
commit a1344d8a44
24 changed files with 412 additions and 242 deletions
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include/nuttx/arch.h
+25 -21
View File
@@ -506,7 +506,7 @@ void up_pthread_start(pthread_startroutine_t entrypt, pthread_addr_t arg)
#endif
/****************************************************************************
* Name: up_signal_handler
* Name: up_signal_dispatch
*
* Description:
* In this kernel mode build, this function will be called to execute a
@@ -515,11 +515,10 @@ void up_pthread_start(pthread_startroutine_t entrypt, pthread_addr_t arg)
* This kernel-mode stub will then be called transfer control to the user
* mode signal handler by calling this function.
*
* Normally the a user-mode signalling handling stub will also execute
* before the ultimate signal handler is called. See
* libc/signal/signal_handler.c This function is the user-space, signal
* handler trampoline function. It is called from up_signal_handler() in
* user-mode.
* Normally the a architecture, user-mode signal handling stub will also
* execute before the ultimate signal handler is called. That stub
* function is the user-space, signal handler trampoline function. It is
* called from up_signal_dispatch() in user-mode.
*
* Inputs:
* sighand - The address user-space signal handling function
@@ -528,37 +527,42 @@ void up_pthread_start(pthread_startroutine_t entrypt, pthread_addr_t arg)
*
* Return:
* None. This function does not return in the normal sense. It returns
* via signal_handler_return (below)
* via an architecture specific system call made by up_signal_handler()
* (see below). However, this will look like a normal return by the
* caller of up_signal_dispatch.
*
****************************************************************************/
#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__) && !defined(CONFIG_DISABLE_SIGNALS)
void up_signal_handler(_sa_sigaction_t sighand, int signo,
FAR siginfo_t *info, FAR void *ucontext) noreturn_function;
void up_signal_dispatch(_sa_sigaction_t sighand, int signo,
FAR siginfo_t *info, FAR void *ucontext);
#endif
/****************************************************************************
* Name: signal_handler_return
* Name: up_signal_handler
*
* Description:
* This function is the user-space, signal handler return function. It
* is called from the signal_handler() in user-mode. This function has the
* general prototype:
*
* void signal_handler_return(void);
*
* However, it it not prototyped here because it should be implemented as
* an inline function or macro that can be obtain by including the file
* include/arch/syscall.h.
* This function is the user-space, signal handler trampoline function that
* must be provided by architecture-specific logic. It is called from
* up_signal_dispatch() in user-mode.
*
* Inputs:
* None.
* sighand - The address user-space signal handling function
* signo, info, and ucontext - Standard arguments to be passed to the
* signal handling function.
*
* Return:
* None. This function does not return.
* None. This function does not return in the normal sense. It returns
* via an architecture specific system call.
*
****************************************************************************/
#if defined(CONFIG_NUTTX_KERNEL) && !defined(__KERNEL__) && !defined(CONFIG_DISABLE_SIGNALS)
void up_signal_handler(_sa_sigaction_t sighand, int signo,
FAR siginfo_t *info, FAR void *ucontext)
noreturn_function;
#endif
/****************************************************************************
* Name: up_allocate_heap
*
include/nuttx/userspace.h
+2 -23
View File
@@ -47,6 +47,8 @@
#include <signal.h>
#include <pthread.h>
#include <nuttx/arch.h>
#ifdef CONFIG_NUTTX_KERNEL
/****************************************************************************
@@ -204,29 +206,6 @@ void task_startup(main_t entrypt, int argc, FAR char *argv[]) noreturn_function;
void pthread_startup(pthread_startroutine_t entrypt, pthread_addr_t arg);
#endif
/****************************************************************************
* Name: signal_handler
*
* Description:
* This function is the user-space, signal handler trampoline function. It
* is called from up_signal_handler() in user-mode.
*
* Inputs:
* sighand - The address user-space signal handling function
* signo, info, and ucontext - Standard arguments to be passed to the
* signal handling function.
*
* Return:
* None. This function does not return in the normal sense. It returns
* via signal_handler_return (see include/nuttx/arch.h)
*
****************************************************************************/
#if defined(CONFIG_NUTTX_KERNEL) && !defined(__KERNEL__) && !defined(CONFIG_DISABLE_SIGNALS)
void signal_handler(_sa_sigaction_t sighand, int signo, FAR siginfo_t *info,
FAR void *ucontext);
#endif
#undef EXTERN
#ifdef __cplusplus
}