diff options
| author | Ian Moffett <ian@osmora.org> | 2025-11-19 19:00:55 -0500 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-11-19 19:00:55 -0500 |
| commit | d6d40e9ecf2aff5b1e265d26f7651e8633eddabd (patch) | |
| tree | a90fea7b0553ce08a20078ab11049bf789c53c49 /sys/inc | |
| parent | fd43b12a711856e23e010b4b561ecc6aa6940074 (diff) | |
kern/amd64: mp: Load per-core GDT/IDT
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/inc')
| -rw-r--r-- | sys/inc/arch/amd64/gdt.h | 17 | ||||
| -rw-r--r-- | sys/inc/mu/cpu.h | 7 |
2 files changed, 23 insertions, 1 deletions
diff --git a/sys/inc/arch/amd64/gdt.h b/sys/inc/arch/amd64/gdt.h index dacfbda..291ab3c 100644 --- a/sys/inc/arch/amd64/gdt.h +++ b/sys/inc/arch/amd64/gdt.h @@ -30,9 +30,26 @@ #ifndef _MACHINE_GDT_H_ #define _MACHINE_GDT_H_ +#include <sys/types.h> +#include <sys/cdefs.h> + #define GDT_KERNCODE 0x08 #define GDT_KERNDATA 0x10 #define GDT_USERCODE 0x18 #define GDT_USERDATA 0x20 +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; +}; + #endif /* !_MACHINE_GDT_H_ */ diff --git a/sys/inc/mu/cpu.h b/sys/inc/mu/cpu.h index 288ba9e..524e42a 100644 --- a/sys/inc/mu/cpu.h +++ b/sys/inc/mu/cpu.h @@ -33,7 +33,8 @@ #include <sys/queue.h> #include <sys/types.h> #include <os/process.h> -#include <md/mcb.h> +#include <md/mcb.h> /* shared */ +#include <md/gdt.h> /* shared */ /* * Processor descriptor @@ -41,12 +42,16 @@ * @id: Logical ID of the processor * @mcb: Machine core block * @curproc: Current process + * @ap_gdt: GDT for APs [unused for BSP] + * @ap_gdtr: GDTR for APs [unused for BSP] * @pqueue: Process queue */ struct cpu_info { uint8_t id; struct mcb mcb; struct process *curproc; + struct gdt_entry ap_gdt[256]; + struct gdtr ap_gdtr; TAILQ_HEAD(, process) pqueue; }; |