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haiku/headers/private/kernel/arch/x86/64/iframe.h

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Merged x86_64 headers into x86 headers. Not many changes seeing as there's not much x86_64 stuff done yet. Small differences are handled with ifdefs, large differences (descriptors.h, struct iframe) have separate headers under arch/x86/32 and arch/x86/64.
2012-07-02 21:47:06 +04:00
/*
* Copyright 2012, Alex Smith, alex@alex-smith.me.uk.
* Distributed under the terms of the MIT License.
*/
#ifndef _KERNEL_ARCH_X86_64_IFRAME_H
#define _KERNEL_ARCH_X86_64_IFRAME_H
struct iframe {
uint64 type;
kernel/x86_64: save fpu state at interrupts The kernel is allowed to use fpu anywhere so we must make sure that user state is not clobbered by saving fpu state at interrupt entry. There is no need to do that in case of system calls since all fpu data registers are caller saved. We do not need, though, to save the whole fpu state at task swich (again, thanks to calling convention). Only status and control registers are preserved. This patch actually adds xmm0-15 register to clobber list of task swich code, but the only reason of that is to make sure that nothing bad happens inside the function that executes that task swich. Inspection of the generated code shows that no xmm registers are actually saved. Signed-off-by: Paweł Dziepak <pdziepak@quarnos.org>
2014-09-10 22:48:35 +04:00
void* fpu;
Merged x86_64 headers into x86 headers. Not many changes seeing as there's not much x86_64 stuff done yet. Small differences are handled with ifdefs, large differences (descriptors.h, struct iframe) have separate headers under arch/x86/32 and arch/x86/64.
2012-07-02 21:47:06 +04:00
uint64 r15;
uint64 r14;
uint64 r13;
uint64 r12;
uint64 r11;
uint64 r10;
uint64 r9;
uint64 r8;
Implemented threading for x86_64. * Thread creation and switching is working fine, however threads do not yet get interrupted because I've not implemented hardware interrupt handling yet (I'll do that next). * I've made some changes to struct iframe: I've removed the e/r prefixes from the member names for both 32/64, so now they're just named ip, ax, bp, etc. This makes it easier to write code that works with both 32/64 without having to deal with different iframe member names.
2012-07-09 19:43:01 +04:00
uint64 bp;
uint64 si;
uint64 di;
uint64 dx;
uint64 cx;
uint64 bx;
uint64 ax;
System call restart support.
2012-08-05 17:20:37 +04:00
uint64 orig_rax;
Merged x86_64 headers into x86 headers. Not many changes seeing as there's not much x86_64 stuff done yet. Small differences are handled with ifdefs, large differences (descriptors.h, struct iframe) have separate headers under arch/x86/32 and arch/x86/64.
2012-07-02 21:47:06 +04:00
uint64 vector;
uint64 error_code;
Implemented threading for x86_64. * Thread creation and switching is working fine, however threads do not yet get interrupted because I've not implemented hardware interrupt handling yet (I'll do that next). * I've made some changes to struct iframe: I've removed the e/r prefixes from the member names for both 32/64, so now they're just named ip, ax, bp, etc. This makes it easier to write code that works with both 32/64 without having to deal with different iframe member names.
2012-07-09 19:43:01 +04:00
uint64 ip;
Merged x86_64 headers into x86 headers. Not many changes seeing as there's not much x86_64 stuff done yet. Small differences are handled with ifdefs, large differences (descriptors.h, struct iframe) have separate headers under arch/x86/32 and arch/x86/64.
2012-07-02 21:47:06 +04:00
uint64 cs;
uint64 flags;
Implemented the rest of the kernel debugger functions for x86_64. Merged with the x86 implementations, mostly the same except for a few differences. GDB stub is currently broken, will investigate later.
2012-07-13 17:09:09 +04:00
// SP and SS are unconditionally present on x86_64, make both names
// available.
union {
uint64 sp;
uint64 user_sp;
};
union {
uint64 ss;
uint64 user_ss;
};
Merged x86_64 headers into x86 headers. Not many changes seeing as there's not much x86_64 stuff done yet. Small differences are handled with ifdefs, large differences (descriptors.h, struct iframe) have separate headers under arch/x86/32 and arch/x86/64.
2012-07-02 21:47:06 +04:00
} _PACKED;
#define IFRAME_IS_USER(f) (((f)->cs & DPL_USER) == DPL_USER)
#endif /* _KERNEL_ARCH_X86_64_IFRAME_H */
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