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x86_64: implement TSS initialisation and user/kernel stack pointer switching

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max 🍓
2026-02-08 11:34:21 +00:00
parent 564d4f9ba0
commit 4051265876
7 changed files with 178 additions and 6 deletions
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9
arch/x86_64/include/mango/machine/cpu.h
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@@ -21,6 +21,9 @@ typedef struct ml_cpu_block {
struct gdt c_gdt;
struct gdt_ptr c_gdt_ptr;
struct tss c_tss;
struct tss_ptr c_tss_ptr;
struct idt_ptr c_idt_ptr;
unsigned int c_cpu_id;
@@ -45,6 +48,12 @@ extern int ml_init_bootcpu(void);
extern int ml_cpu_block_init(ml_cpu_block *p);
extern int ml_cpu_block_use(ml_cpu_block *p);
extern virt_addr_t ml_cpu_block_get_ustack(ml_cpu_block *p);
extern virt_addr_t ml_cpu_block_get_kstack(ml_cpu_block *p);
extern void ml_cpu_block_set_ustack(ml_cpu_block *p, virt_addr_t sp);
extern void ml_cpu_block_set_kstack(ml_cpu_block *p, virt_addr_t sp);
/* defined in cpu_ctrl.S */
extern void ml_halt_cpu(void);
extern ml_cpu_block *ml_this_cpu(void);

1
arch/x86_64/include/mango/machine/init.h
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@@ -1,6 +1,7 @@
#ifndef MANGO_X86_64_INIT_H_
#define MANGO_X86_64_INIT_H_
#include <stddef.h>
#include <stdint.h>
#ifdef __cplusplus