diff options
Diffstat (limited to 'sys/include/arch/amd64')
| -rw-r--r-- | sys/include/arch/amd64/cpu.h | 40 | ||||
| -rw-r--r-- | sys/include/arch/amd64/frame.h | 7 | ||||
| -rw-r--r-- | sys/include/arch/amd64/pcb.h | 39 | ||||
| -rw-r--r-- | sys/include/arch/amd64/trap.h | 2 |
4 files changed, 88 insertions, 0 deletions
diff --git a/sys/include/arch/amd64/cpu.h b/sys/include/arch/amd64/cpu.h index e2ed851..ee9bad7 100644 --- a/sys/include/arch/amd64/cpu.h +++ b/sys/include/arch/amd64/cpu.h @@ -110,6 +110,46 @@ 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"); +} + struct cpu_info *amd64_this_cpu(void); #endif /* !_AMD64_CPU_H_ */ diff --git a/sys/include/arch/amd64/frame.h b/sys/include/arch/amd64/frame.h index a2e1a05..298a836 100644 --- a/sys/include/arch/amd64/frame.h +++ b/sys/include/arch/amd64/frame.h @@ -67,5 +67,12 @@ struct trapframe { (FRAME)->rsp = SP; \ (FRAME)->ss = 0x10; \ +#define init_frame_user(FRAME, IP, SP) \ + (FRAME)->rip = IP; \ + (FRAME)->cs = 0x18 | 3; \ + (FRAME)->rflags = 0x202; \ + (FRAME)->rsp = SP; \ + (FRAME)->ss = 0x20 | 3; \ + #endif /* !defined(__ASSEMBLER__) */ #endif /* !_AMD64_FRAME_H_ */ diff --git a/sys/include/arch/amd64/pcb.h b/sys/include/arch/amd64/pcb.h new file mode 100644 index 0000000..0e0aab8 --- /dev/null +++ b/sys/include/arch/amd64/pcb.h @@ -0,0 +1,39 @@ +/* + * 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 _AMD64_PCB_H_ +#define _AMD64_PCB_H_ + +#include <sys/types.h> + +struct pcb { + uint8_t *fpu_state; +}; + +#endif /* !_AMD64_PCB_H_ */ diff --git a/sys/include/arch/amd64/trap.h b/sys/include/arch/amd64/trap.h index 1019999..c75fa28 100644 --- a/sys/include/arch/amd64/trap.h +++ b/sys/include/arch/amd64/trap.h @@ -47,6 +47,7 @@ #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 */ /* Trap is coming from user mode */ #define TRAP_USER 0x100 @@ -65,6 +66,7 @@ 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); #else .macro handle_trap |