diff options
Diffstat (limited to 'sys/include/arch')
| -rw-r--r-- | sys/include/arch/amd64/asm.h | 113 | ||||
| -rw-r--r-- | sys/include/arch/amd64/cpu.h | 43 | ||||
| -rw-r--r-- | sys/include/arch/amd64/cpuid.h | 40 | ||||
| -rw-r--r-- | sys/include/arch/amd64/frame.h | 61 | ||||
| -rw-r--r-- | sys/include/arch/amd64/frameasm.h | 103 | ||||
| -rw-r--r-- | sys/include/arch/amd64/gdt.h | 47 | ||||
| -rw-r--r-- | sys/include/arch/amd64/idt.h | 68 | ||||
| -rw-r--r-- | sys/include/arch/amd64/msr.h | 63 | ||||
| -rw-r--r-- | sys/include/arch/amd64/pio.h | 43 | ||||
| -rw-r--r-- | sys/include/arch/amd64/trap.h | 68 |
10 files changed, 649 insertions, 0 deletions
diff --git a/sys/include/arch/amd64/asm.h b/sys/include/arch/amd64/asm.h new file mode 100644 index 0000000..d7334fe --- /dev/null +++ b/sys/include/arch/amd64/asm.h @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_ASM_H_ +#define _MACHINE_ASM_H_ + +#include <sys/types.h> +#include <sys/param.h> +#include <machine/msr.h> + +/* + * Contains information for the current + * core. Stored in %GS. + * + * MUST REMAIN IN ORDER!!! + */ +struct cpu_ctx { + struct cpu_info *ci; +}; + +/* + * Returns true for this core if maskable + * interrupts are masked (CLI) and false if + * they aren't (STI). + */ +static inline bool +amd64_is_intr_mask(void) +{ + uint64_t flags; + + __ASMV("pushfq; pop %0" : "=rm" (flags) :: "memory"); + return !ISSET(flags, BIT(9)); +} + +static inline void +amd64_write_gs_base(uintptr_t val) +{ + wrmsr(IA32_KERNEL_GS_BASE, val); +} + +static inline uintptr_t +amd64_read_gs_base(void) +{ + return rdmsr(IA32_KERNEL_GS_BASE); +} + +static inline uint64_t +amd64_read_cr0(void) +{ + uint64_t cr0; + __ASMV("mov %%cr0, %0" : "=r" (cr0) :: "memory"); + return cr0; +} + +static inline void +amd64_write_cr0(uint64_t val) +{ + __ASMV("mov %0, %%cr0" :: "r" (val) : "memory"); +} + +static inline uint64_t +amd64_read_cr4(void) +{ + uint64_t cr4; + __ASMV("mov %%cr4, %0" : "=r" (cr4) :: "memory"); + return cr4; +} + +static inline void +amd64_write_cr4(uint64_t val) +{ + __ASMV("mov %0, %%cr4" :: "r" (val) : "memory"); +} + +static inline void +amd64_fxsave(void *area) +{ + __ASMV("fxsave (%0)" :: "r" (area) : "memory"); +} + +static inline void +amd64_fxrstor(void *area) +{ + __ASMV("fxrstor (%0)" :: "r" (area) : "memory"); +} + +#endif diff --git a/sys/include/arch/amd64/cpu.h b/sys/include/arch/amd64/cpu.h new file mode 100644 index 0000000..efa60ad --- /dev/null +++ b/sys/include/arch/amd64/cpu.h @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_CPU_H_ +#define _MACHINE_CPU_H_ + +#include <sys/types.h> +#include <sys/cdefs.h> + +struct cpu_info { + uint32_t apicid; +}; + +void cpu_startup(void); + + +#endif /* !_MACHINE_CPU_H_ */ diff --git a/sys/include/arch/amd64/cpuid.h b/sys/include/arch/amd64/cpuid.h new file mode 100644 index 0000000..d1a752b --- /dev/null +++ b/sys/include/arch/amd64/cpuid.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_CPUID_H_ +#define _MACHINE_CPUID_H_ + +#include <sys/cdefs.h> + +#define CPUID(level, a, b, c, d) \ + __ASMV("cpuid\n\t" \ + : "=a" (a), "=b" (b), "=c" (c), "=d" (d) \ + : "0" (level)) + +#endif /* !_MACHINE_CPUID_H_ */ diff --git a/sys/include/arch/amd64/frame.h b/sys/include/arch/amd64/frame.h new file mode 100644 index 0000000..a132e4c --- /dev/null +++ b/sys/include/arch/amd64/frame.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_FRAME_H_ +#define _MACHINE_FRAME_H_ + +#include <sys/types.h> + +struct trapframe { + uint64_t trapno; + uint64_t rax; + uint64_t rcx; + uint64_t rdx; + uint64_t rbx; + uint64_t rsi; + uint64_t rdi; + uint64_t rbp; + uint64_t r8; + uint64_t r9; + uint64_t r10; + uint64_t r11; + uint64_t r12; + uint64_t r13; + uint64_t r14; + uint64_t r15; + /* Pushed by hardware */ + uint64_t error_code; + uint64_t rip; + uint64_t cs; + uint64_t rflags; + uint64_t rsp; + uint64_t ss; +}; + +#endif /* !_MACHINE_FRAME_H_ */ diff --git a/sys/include/arch/amd64/frameasm.h b/sys/include/arch/amd64/frameasm.h new file mode 100644 index 0000000..b6d4f39 --- /dev/null +++ b/sys/include/arch/amd64/frameasm.h @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_FRAMEASM_H_ +#define _MACHINE_FRAMEASM_H_ + +/* + * If the interrupt has an error code, this macro shall + * be used to create the trapframe. + * + * XXX: A trapframe created with this must be popped with + * pop_trapframe_ec + */ +.macro push_trapframe_ec trapno + push %r15 + push %r14 + push %r13 + push %r12 + push %r11 + push %r10 + push %r9 + push %r8 + push %rbp + push %rdi + push %rsi + push %rbx + push %rdx + push %rcx + push %rax + push \trapno +.endm + +/* + * If the interrupt has an error code, this macro shall + * be used to cleanup the trapframe. + */ +.macro pop_trapframe_ec + add $8, %rsp /* Trapno */ + pop %rax + pop %rcx + pop %rdx + pop %rbx + pop %rsi + pop %rdi + pop %rbp + pop %r8 + pop %r9 + pop %r10 + pop %r11 + pop %r12 + pop %r13 + pop %r14 + pop %r15 +.endm + +/* + * If the interrupt has no error code, this macro + * shall be used to create the trapframe. + * + * XXX: A trapframe created with this must be popped + * with pop_trapframe + */ +.macro push_trapframe trapno + push $0 + push_trapframe_ec \trapno +.endm + + +/* + * If the interrupt has no error code, this macro shall + * be used to cleanup the trapframe. + */ +.macro pop_trapframe + pop_trapframe_ec + add $8, %rsp /* Pop error code */ +.endm +#endif /* !_MACHINE_FRAMEASM_H_ */ diff --git a/sys/include/arch/amd64/gdt.h b/sys/include/arch/amd64/gdt.h new file mode 100644 index 0000000..6f8a914 --- /dev/null +++ b/sys/include/arch/amd64/gdt.h @@ -0,0 +1,47 @@ +#ifndef _AMD64_GDT_H_ +#define _AMD64_GDT_H_ + +#include <sys/types.h> +#include <sys/cdefs.h> + +#define KERNEL_CS 0x08 +#define KERNEL_DS 0x10 + +struct __packed gdt_entry { + uint16_t limit; + uint16_t base_low; + uint8_t base_mid; + uint8_t access; + uint8_t granularity; + uint8_t base_hi; +}; + +struct __packed gdtr { + uint16_t limit; + uintptr_t offset; +}; + +__always_inline static inline void +gdt_load(struct gdtr *gdtr) +{ + __ASMV("lgdt %0\n" + "push $8\n" /* Push CS */ + "lea 1f(%%rip), %%rax\n" /* Load 1 label address into RAX */ + "push %%rax\n" /* Push the return address (label 1) */ + "lretq\n" /* Far return to update CS */ + "1:\n" + " mov $0x10, %%eax\n" + " mov %%eax, %%ds\n" + " mov %%eax, %%es\n" + " mov %%eax, %%fs\n" + " mov %%eax, %%gs\n" + " mov %%eax, %%ss\n" + : + : "m" (*gdtr) + : "rax", "memory" + ); +} + +extern struct gdt_entry g_gdt_data[256]; + +#endif /* !AMD64_GDT_H_ */ diff --git a/sys/include/arch/amd64/idt.h b/sys/include/arch/amd64/idt.h new file mode 100644 index 0000000..7f439f3 --- /dev/null +++ b/sys/include/arch/amd64/idt.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_IDT_H_ +#define _MACHINE_IDT_H_ + +#include <sys/types.h> +#include <sys/cdefs.h> + +#define IDT_TRAP_GATE 0x8F +#define IDT_INT_GATE 0x8E +#define IDT_USER_INT_GATE 0xEE + +#define ISR(p) ((uintptr_t)p) + +/* + * AMD64 Interrupt Gate Descriptor. + */ +struct idt_entry { + uint16_t off_lo; /* Low 16 bits of ISR offset */ + uint16_t segsel; /* Segment selector, hardcode to kernel CS */ + uint8_t ist : 2; /* Interrupt stack table */ + uint8_t zero : 1; /* Unused: keep zero */ + uint8_t zero1 : 4; /* Unused: keep zero */ + uint8_t type : 4; /* Gate type */ + uint8_t zero2 : 1; /* Unused: keep zero */ + uint8_t dpl : 2; /* Descriptor privilege level */ + uint8_t p : 1; /* Present (keep 1 to mark as valid) */ + uint16_t off_mid; /* Middle 16 bits of ISR offset */ + uint32_t off_hi; /* High 32-bits of ISR offset */ + uint32_t reserved; /* Reserved: keep zero */ +}; + +struct __packed idtr { + uint16_t limit; + uintptr_t offset; +}; + +void idt_set_desc(uint8_t vector, uint8_t type, uintptr_t isr, uint8_t ist); +void idt_load(void); + +#endif /* !_MACHINE_IDT_H_ */ diff --git a/sys/include/arch/amd64/msr.h b/sys/include/arch/amd64/msr.h new file mode 100644 index 0000000..bc0dbcb --- /dev/null +++ b/sys/include/arch/amd64/msr.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_MSR_H_ +#define _MACHINE_MSR_H_ + +#define IA32_SPEC_CTL 0x00000048 +#define IA32_KERNEL_GS_BASE 0xC0000102 + +static inline uint64_t +rdmsr(uint32_t msr_addr) +{ + uint32_t lo, hi; + + __ASMV("rdmsr" + : "=a" (lo), "=d" (hi) + : "c" (msr_addr) + ); + return ((uint64_t)hi << 32) | lo; +} + +static inline void +wrmsr(uint32_t msr_addr, uint64_t value) +{ + uint32_t lo, hi; + + lo = (uint32_t)value; + hi = (uint32_t)(value >> 32); + + __ASMV("wrmsr" + : /* No outputs */ + : "a" (lo), "d" (hi), + "c" (msr_addr) + ); +} + +#endif /* !_MACHINE_MSR_H_ */ diff --git a/sys/include/arch/amd64/pio.h b/sys/include/arch/amd64/pio.h new file mode 100644 index 0000000..193e986 --- /dev/null +++ b/sys/include/arch/amd64/pio.h @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_PIO_H_ +#define _MACHINE_PIO_H_ + +#include <sys/types.h> + +uint8_t inb(uint16_t port); +uint16_t inw(uint16_t port); +uint32_t inl(uint16_t port); + +void outb(uint16_t port, uint8_t val); +void outw(uint16_t port, uint16_t val); +void outl(uint16_t port, uint32_t val); + +#endif /* !_MACHINE_PIO_H_ */ diff --git a/sys/include/arch/amd64/trap.h b/sys/include/arch/amd64/trap.h new file mode 100644 index 0000000..deeb738 --- /dev/null +++ b/sys/include/arch/amd64/trap.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_TRAP_H_ +#define _MACHINE_TRAP_H_ + +#if !defined(__ASSEMBLER__) +#include <machine/frame.h> +#endif + +#define TRAP_NONE 0 /* Used for general interrupts */ +#define TRAP_BREAKPOINT 1 /* Breakpoint */ +#define TRAP_ARITH_ERR 2 /* Arithmetic error (e.g division by 0) */ +#define TRAP_OVERFLOW 3 /* Overflow */ +#define TRAP_BOUND_RANGE 4 /* BOUND range exceeded */ +#define TRAP_INVLOP 5 /* Invalid opcode */ +#define TRAP_DOUBLE_FAULT 6 /* Double fault */ +#define TRAP_INVLTSS 7 /* Invalid TSS */ +#define TRAP_SEGNP 8 /* Segment not present */ +#define TRAP_PROTFLT 9 /* General protection */ +#define TRAP_PAGEFLT 10 /* Page fault */ +#define TRAP_NMI 11 /* Non-maskable interrupt */ +#define TRAP_SS 12 /* Stack-segment fault */ + +#if !defined(__ASSEMBLER__) + +void breakpoint_handler(void *sf); +void arith_err(void *sf); +void overflow(void *sf); +void bound_range(void *sf); +void invl_op(void *sf); +void double_fault(void *sf); +void invl_tss(void *sf); +void segnp(void *sf); +void general_prot(void *sf); +void page_fault(void *sf); +void nmi(void *sf); +void ss_fault(void *sf); +void trap_handler(struct trapframe *tf); + +#endif /* !__ASSEMBLER__ */ +#endif /* !_MACHINE_TRAP_H_ */ |