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kernel/arm: save FPU registers on context switch

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Change-Id: Icb62688338d3a3083f8f6d1874cae3218ba042e0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5614
Reviewed-by: Fredrik Holmqvist <[email protected]>
Tested-by: Commit checker robot <[email protected]>
This commit is contained in:
David Karoly
2022-09-04 17:33:49 +00:00
parent d244e9ef2d
commit 67406e5145
3 changed files with 31 additions and 4 deletions
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headers/private/kernel/arch/arm/arch_thread_types.h
+9 -1
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@@ -14,10 +14,15 @@ struct iframe_stack {
int32 index;
};
struct arch_fpu_context {
uint64_t fp_regs[32];
uint32_t fpscr;
};
// architecture specific thread info
struct arch_thread {
void *sp; // stack pointer
void *interrupt_stack;
struct arch_fpu_context fpuContext;
// used to track interrupts on this thread
struct iframe_stack iframes;
@@ -43,6 +48,9 @@ extern "C" {
#endif
void arch_return_to_userland(struct iframe *);
void arm_context_switch(struct arch_thread* from, struct arch_thread* to);
void arm_save_fpu(struct arch_fpu_context* context);
void arm_restore_fpu(struct arch_fpu_context* context);
#ifdef __cplusplus
}