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irq: Introduce CPU_INTERRUPT_TGT_* defines.

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These defines will be place-holders for cpu-specific functionality.
Generic code will, at the end of the patch series, no longer have to
concern itself about how SMI, NMI, etc should be handled.  Instead,
generic code will know only that the interrupt is internal or external.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2011-05-04 13:34:24 -07:00 committed by Blue Swirl
parent 3964f535c3
commit 9c76219eaa
2 changed files with 59 additions and 12 deletions
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63
cpu-all.h
View File

@ -786,18 +786,57 @@ void QEMU_NORETURN cpu_abort(CPUState *env, const char *fmt, ...)
extern CPUState *first_cpu;
extern CPUState *cpu_single_env;
#define CPU_INTERRUPT_HARD 0x02 /* hardware interrupt pending */
#define CPU_INTERRUPT_EXITTB 0x04 /* exit the current TB (use for x86 a20 case) */
#define CPU_INTERRUPT_TIMER 0x08 /* internal timer exception pending */
#define CPU_INTERRUPT_FIQ 0x10 /* Fast interrupt pending. */
#define CPU_INTERRUPT_HALT 0x20 /* CPU halt wanted */
#define CPU_INTERRUPT_SMI 0x40 /* (x86 only) SMI interrupt pending */
#define CPU_INTERRUPT_DEBUG 0x80 /* Debug event occured. */
#define CPU_INTERRUPT_VIRQ 0x100 /* virtual interrupt pending. */
#define CPU_INTERRUPT_NMI 0x200 /* NMI pending. */
#define CPU_INTERRUPT_INIT 0x400 /* INIT pending. */
#define CPU_INTERRUPT_SIPI 0x800 /* SIPI pending. */
#define CPU_INTERRUPT_MCE 0x1000 /* (x86 only) MCE pending. */
/* Flags for use in ENV->INTERRUPT_PENDING.
The numbers assigned here are non-sequential in order to preserve
binary compatibility with the vmstate dump. Bit 0 (0x0001) was
previously used for CPU_INTERRUPT_EXIT, and is cleared when loading
the vmstate dump. */
/* External hardware interrupt pending. This is typically used for
interrupts from devices. */
#define CPU_INTERRUPT_HARD 0x0002
/* Exit the current TB. This is typically used when some system-level device
makes some change to the memory mapping. E.g. the a20 line change. */
#define CPU_INTERRUPT_EXITTB 0x0004
/* Halt the CPU. */
#define CPU_INTERRUPT_HALT 0x0020
/* Debug event pending. */
#define CPU_INTERRUPT_DEBUG 0x0080
/* Several target-specific external hardware interrupts. Each target/cpu.h
should define proper names based on these defines. */
#define CPU_INTERRUPT_TGT_EXT_0 0x0008
#define CPU_INTERRUPT_TGT_EXT_1 0x0010
#define CPU_INTERRUPT_TGT_EXT_2 0x0040
#define CPU_INTERRUPT_TGT_EXT_3 0x0200
#define CPU_INTERRUPT_TGT_EXT_4 0x1000
/* Several target-specific internal interrupts. These differ from the
preceeding target-specific interrupts in that they are intended to
originate from within the cpu itself, typically in response to some
instruction being executed. These, therefore, are not masked while
single-stepping within the debugger. */
#define CPU_INTERRUPT_TGT_INT_0 0x0100
#define CPU_INTERRUPT_TGT_INT_1 0x0400
#define CPU_INTERRUPT_TGT_INT_2 0x0800
/* First unused bit: 0x2000. */
/* Temporary remapping from the generic names back to the previous
cpu-specific names. These will be moved to target-foo/cpu.h next. */
#define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_EXT_0
#define CPU_INTERRUPT_FIQ CPU_INTERRUPT_TGT_EXT_1
#define CPU_INTERRUPT_SMI CPU_INTERRUPT_TGT_EXT_2
#define CPU_INTERRUPT_VIRQ CPU_INTERRUPT_TGT_INT_0
#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3
#define CPU_INTERRUPT_INIT CPU_INTERRUPT_TGT_INT_1
#define CPU_INTERRUPT_SIPI CPU_INTERRUPT_TGT_INT_2
#define CPU_INTERRUPT_MCE CPU_INTERRUPT_TGT_EXT_4
#ifndef CONFIG_USER_ONLY
typedef void (*CPUInterruptHandler)(CPUState *, int);

8
poison.h
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@ -46,6 +46,14 @@
#pragma GCC poison CPU_INTERRUPT_DEBUG
#pragma GCC poison CPU_INTERRUPT_VIRQ
#pragma GCC poison CPU_INTERRUPT_NMI
#pragma GCC poison CPU_INTERRUPT_TGT_EXT_0
#pragma GCC poison CPU_INTERRUPT_TGT_EXT_1
#pragma GCC poison CPU_INTERRUPT_TGT_EXT_2
#pragma GCC poison CPU_INTERRUPT_TGT_EXT_3
#pragma GCC poison CPU_INTERRUPT_TGT_EXT_4
#pragma GCC poison CPU_INTERRUPT_TGT_INT_0
#pragma GCC poison CPU_INTERRUPT_TGT_INT_1
#pragma GCC poison CPU_INTERRUPT_TGT_INT_2
#endif
#endif