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NetBSD/sys/arch/x86_64/include/frameasm.h

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Consistently handle segment selectors in traps and interrupts.
2002-07-14 16:20:45 +04:00
/* $NetBSD: frameasm.h,v 1.4 2002/07/14 12:20:45 fvdl Exp $ */
Initial commit of the port to AMD's upcoming 64 bit architecture, the x86-64. Since there's no hardware available yet, this port is only known to run on the Simics simulator for at the moment, and as such uses the PC devices that it simulates for now. It will be developed more (and cleaned up) as the hardware becomes available.
2001-06-19 04:19:12 +04:00
#ifndef _X86_64_MACHINE_FRAMEASM_H
#define _X86_64_MACHINE_FRAMEASM_H
/*
* Macros to define pushing/popping frames for interrupts, traps
* and system calls. Currently all the same; will diverge later.
*/
/*
* These are used on interrupt or trap entry or exit.
*/
Consistently handle segment selectors in traps and interrupts.
2002-07-14 16:20:45 +04:00
#define INTR_SAVE_GPRS \
subq $120,%rsp ; \
movq %r15,0(%rsp) ; \
movq %r14,8(%rsp) ; \
movq %r13,16(%rsp) ; \
movq %r12,24(%rsp) ; \
movq %r11,32(%rsp) ; \
movq %r10,40(%rsp) ; \
movq %r9,48(%rsp) ; \
movq %r8,56(%rsp) ; \
movq %rdi,64(%rsp) ; \
movq %rsi,72(%rsp) ; \
movq %rbp,80(%rsp) ; \
movq %rbx,88(%rsp) ; \
movq %rdx,96(%rsp) ; \
movq %rcx,104(%rsp) ; \
movq %rax,112(%rsp)
Initial commit of the port to AMD's upcoming 64 bit architecture, the x86-64. Since there's no hardware available yet, this port is only known to run on the Simics simulator for at the moment, and as such uses the PC devices that it simulates for now. It will be developed more (and cleaned up) as the hardware becomes available.
2001-06-19 04:19:12 +04:00
Consistently handle segment selectors in traps and interrupts.
2002-07-14 16:20:45 +04:00
#define INTR_RESTORE_GPRS \
movq 0(%rsp),%r15 ; \
movq 8(%rsp),%r14 ; \
movq 16(%rsp),%r13 ; \
movq 24(%rsp),%r12 ; \
movq 32(%rsp),%r11 ; \
movq 40(%rsp),%r10 ; \
movq 48(%rsp),%r9 ; \
movq 56(%rsp),%r8 ; \
movq 64(%rsp),%rdi ; \
movq 72(%rsp),%rsi ; \
movq 80(%rsp),%rbp ; \
movq 88(%rsp),%rbx ; \
movq 96(%rsp),%rdx ; \
movq 104(%rsp),%rcx ; \
movq 112(%rsp),%rax ; \
addq $120,%rsp
Initial commit of the port to AMD's upcoming 64 bit architecture, the x86-64. Since there's no hardware available yet, this port is only known to run on the Simics simulator for at the moment, and as such uses the PC devices that it simulates for now. It will be developed more (and cleaned up) as the hardware becomes available.
2001-06-19 04:19:12 +04:00
Drink the swapgs kool-aid. Enable the use of syscall/sysret as the default system cal entry point.
2002-06-03 22:23:16 +04:00
#define INTRENTRY \
Consistently handle segment selectors in traps and interrupts.
2002-07-14 16:20:45 +04:00
subq $32,%rsp ; \
testq $SEL_UPL,56(%rsp) ; \
Drink the swapgs kool-aid. Enable the use of syscall/sysret as the default system cal entry point.
2002-06-03 22:23:16 +04:00
je 98f ; \
swapgs ; \
Consistently handle segment selectors in traps and interrupts.
2002-07-14 16:20:45 +04:00
movw %gs,0(%rsp) ; \
movw %fs,8(%rsp) ; \
movw %ds,16(%rsp) ; \
movw %es,24(%rsp) ; \
98: INTR_SAVE_GPRS
Initial commit of the port to AMD's upcoming 64 bit architecture, the x86-64. Since there's no hardware available yet, this port is only known to run on the Simics simulator for at the moment, and as such uses the PC devices that it simulates for now. It will be developed more (and cleaned up) as the hardware becomes available.
2001-06-19 04:19:12 +04:00
Drink the swapgs kool-aid. Enable the use of syscall/sysret as the default system cal entry point.
2002-06-03 22:23:16 +04:00
#define INTRFASTEXIT \
Consistently handle segment selectors in traps and interrupts.
2002-07-14 16:20:45 +04:00
INTR_RESTORE_GPRS ; \
testq $SEL_UPL,56(%rsp) ; \
je 99f ; \
cli ; \
swapgs ; \
movw 0(%rsp),%gs ; \
movw 8(%rsp),%fs ; \
movw 16(%rsp),%ds ; \
movw 24(%rsp),%es ; \
99: addq $48,%rsp ; \
iretq
Add definition for CPU-private data (in a remapped page in the data segment). Somewhat of a kludge to be able to switch stack pointers in in the syscall entry point without clobering a register, avoiding the terror of 'swapgs'.
2002-05-29 03:09:36 +04:00
Initial commit of the port to AMD's upcoming 64 bit architecture, the x86-64. Since there's no hardware available yet, this port is only known to run on the Simics simulator for at the moment, and as such uses the PC devices that it simulates for now. It will be developed more (and cleaned up) as the hardware becomes available.
2001-06-19 04:19:12 +04:00
#endif /* _X86_64_MACHINE_FRAMEASM_H */