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Last change
on this file since 91 was
91,
checked in by max@…, 7 years ago
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retrieve the pressed key, and display it
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File size:
1.6 KB
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| Rev | Line | |
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| [29] | 1 | /* |
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| 2 | * hal_cpu.S - Miscellaneous CPU functions |
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| 3 | * |
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| 4 | * Copyright (c) 2017 Maxime Villard |
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| 5 | * |
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| 6 | * This file is part of ALMOS-MKH. |
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| 7 | * |
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| 8 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 9 | * under the terms of the GNU General Public License as published by |
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| 10 | * the Free Software Foundation; version 2.0 of the License. |
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| 11 | * |
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| 12 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU General Public License |
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| 18 | * along with ALMOS-MKH.; if not, write to the Free Software Foundation, |
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| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |
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| 22 | #define x86_ASM |
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| 23 | #include <hal_boot.h> |
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| [85] | 24 | #include <hal_segmentation.h> |
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| [29] | 25 | |
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| 26 | ASM_ENTRY(lgdt) |
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| 27 | lgdt (%rdi) |
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| [85] | 28 | /* Reload the prefetch queue */ |
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| 29 | jmp 1f |
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| 30 | nop |
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| 31 | 1: /* Reload stale selectors */ |
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| 32 | movl $GDT_FIXED_SEL(GDT_KDATA_SEL, SEL_KPL),%eax |
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| 33 | movl %eax,%ds |
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| 34 | movl %eax,%es |
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| 35 | movl %eax,%ss |
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| [29] | 36 | ret |
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| 37 | |
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| 38 | ASM_ENTRY(lidt) |
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| 39 | lidt (%rdi) |
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| 40 | ret |
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| 41 | |
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| 42 | ASM_ENTRY(ltr) |
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| 43 | ltr %di |
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| 44 | ret |
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| 45 | |
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| [35] | 46 | ASM_ENTRY(invlpg) |
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| 47 | invlpg (%rdi) |
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| 48 | ret |
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| 49 | |
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| [78] | 50 | ASM_ENTRY(sti) |
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| 51 | sti |
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| 52 | ret |
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| 53 | |
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| 54 | ASM_ENTRY(cli) |
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| 55 | cli |
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| 56 | ret |
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| 57 | |
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| [91] | 58 | ASM_ENTRY(in8) |
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| 59 | movq %rdi,%rdx |
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| 60 | xorq %rax,%rax |
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| 61 | inb %dx,%al |
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| 62 | ret |
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| 63 | |
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| [82] | 64 | ASM_ENTRY(out8) |
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| 65 | movq %rdi,%rdx |
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| 66 | movq %rsi,%rax |
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| 67 | outb %al,%dx |
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| 68 | ret |
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| 69 | |
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| [46] | 70 | ASM_ENTRY(rdmsr) |
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| 71 | movq %rdi,%rcx |
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| 72 | xorq %rax,%rax |
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| 73 | rdmsr |
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| 74 | shlq $32,%rdx |
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| 75 | orq %rdx,%rax |
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| 76 | ret |
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| 77 | |
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| 78 | ASM_ENTRY(wrmsr) |
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| 79 | movq %rdi,%rcx |
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| 80 | movq %rsi,%rax |
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| 81 | movq %rsi,%rdx |
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| 82 | shrq $32,%rdx |
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| 83 | wrmsr |
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| 84 | ret |
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| 85 | |
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| [82] | 86 | ASM_ENTRY(x86_stop) /* debug only */ |
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| 87 | int $0x0b |
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| 88 | ret |
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| 89 | |
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