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Add task init and signal scheduling logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3338 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2011-03-05 01:56:44 +00:00
parent f9c9f3c587
commit 1135ccf5a0
7 changed files with 505 additions and 33 deletions
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arch/x86/include/i486/irq.h
+30 -17
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@@ -57,23 +57,25 @@
/* Storage order: %ebx, $esi, %edi, %ebp, sp, and return PC */
#ifdef __ASSEMBLY__
# define REG_EBX (0*4)
# define REG_ESI (1*4)
# define REG_EDI (2*4)
# define REG_EBP (3*4)
# define REG_SP (4*4)
# define REG_PC (5*4)
# define REG_EBX (0*4)
# define REG_ESI (1*4)
# define REG_EDI (2*4)
# define REG_EBP (3*4)
# define REG_SP (4*4)
# define REG_PC (5*4)
# define REG_FLAGS (6*4)
#else
# define REG_EBX (0)
# define REG_ESI (1)
# define REG_EDI (2)
# define REG_EBP (3)
# define REG_SP (4)
# define REG_PC (5)
# define REG_EBX (0)
# define REG_ESI (1)
# define REG_EDI (2)
# define REG_EBP (3)
# define REG_SP (4)
# define REG_PC (5)
# define REG_FLAGS (6)
#endif /* __ASSEMBLY__ */
#define XCPTCONTEXT_REGS (6)
#define XCPTCONTEXT_SIZE (6 * XCPTCONTEXT_REGS)
#define XCPTCONTEXT_REGS (7)
#define XCPTCONTEXT_SIZE (4 * XCPTCONTEXT_REGS)
/****************************************************************************
* Public Types
@@ -84,9 +86,20 @@
#ifndef __ASSEMBLY__
struct xcptcontext
{
void *sigdeliver; /* Actual type is sig_deliver_t */
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
/* Storage order: %ebx, $esi, %edi, %ebp, sp, and return PC */
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and CPSR used during signal processing. */
uint32_t saved_pc;
uint32_t saved_flags;
#endif
/* Register save area */
uint32_t regs[XCPTCONTEXT_REGS];
};
@@ -117,7 +130,7 @@ static inline irqstate_t irqflags()
static inline bool irqdisabled(irqstate_t flags)
{
return ((flags & X86_FLAGS_IF) == 0);
return ((flags & X86_FLAGS_IF) != 0);
}
/* Disable interrupts unconditionally */