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kernel/arch/thread: implement for riscv64

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Change-Id: I3effa598626b32c29606299cd0edee390d430baf
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4066
Reviewed-by: Alex von Gluck IV <[email protected]>
This commit is contained in:
X512
2021-08-06 15:01:52 +00:00
committed by Alex von Gluck IV
parent 7ef006297e
commit 4a32f48e70
5 changed files with 472 additions and 38 deletions
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headers/private/kernel/arch/riscv64/arch_thread.h
+4 -10
View File
@@ -11,30 +11,24 @@
#include <arch/cpu.h>
#warning IMPLEMENT arch_thread.h
#ifdef __cplusplus
extern "C" {
#endif
void riscv64_push_iframe(struct iframe_stack* stack, struct iframe* frame);
void riscv64_pop_iframe(struct iframe_stack* stack);
struct iframe* riscv64_get_user_iframe(void);
static inline Thread*
arch_thread_get_current_thread(void)
{
#warning IMPLEMENT arch_thread_get_current_thread
Thread* t = NULL;
return t;
Thread* t;
asm volatile("mv %0, tp" : "=r" (t));
return t;
}
static inline void
arch_thread_set_current_thread(Thread* t)
{
#warning IMPLEMENT arch_thread_set_current_thread
asm volatile("mv tp, %0" : : "r" (t));
}
headers/private/kernel/arch/riscv64/arch_thread_types.h
+74 -14
View File
@@ -7,20 +7,65 @@
#include <kernel.h>
#define IFRAME_TRACE_DEPTH 4
struct iframe_stack {
struct iframe *frames[IFRAME_TRACE_DEPTH];
int32 index;
namespace BKernel {
struct Thread;
}
struct iframe {
uint64 ra;
uint64 t6;
uint64 sp;
uint64 gp;
uint64 tp;
uint64 t0;
uint64 t1;
uint64 t2;
uint64 t5;
uint64 s1;
uint64 a0;
uint64 a1;
uint64 a2;
uint64 a3;
uint64 a4;
uint64 a5;
uint64 a6;
uint64 a7;
uint64 s2;
uint64 s3;
uint64 s4;
uint64 s5;
uint64 s6;
uint64 s7;
uint64 s8;
uint64 s9;
uint64 s10;
uint64 s11;
uint64 t3;
uint64 t4;
uint64 fp;
uint64 epc;
};
// architecture specific thread info
struct arch_thread {
void *sp; // stack pointer
void *interrupt_stack;
struct arch_context {
uint64 ra; // 0
uint64 s[12]; // 12
uint64 sp; // 13
uint64 satp; // 14
};
// used to track interrupts on this thread
struct iframe_stack iframes;
struct fpu_context {
double f[32];
uint64 fcsr;
};
struct arch_thread {
BKernel::Thread* thread;
arch_context context;
fpu_context fpuContext;
iframe* userFrame;
};
struct arch_team {
@@ -31,10 +76,25 @@ struct arch_team {
};
struct arch_fork_arg {
// gcc treats empty structures as zero-length in C, but as if they contain
// a char in C++. So we have to put a dummy in to be able to use the struct
// from both in a consistent way.
char dummy;
iframe frame;
};
#ifdef __cplusplus
extern "C" {
#endif
int arch_setjmp(arch_context* ctx);
void arch_longjmp(arch_context* ctx, int val);
void save_fpu(fpu_context* ctx);
void restore_fpu(fpu_context* ctx);
void arch_thread_entry();
void arch_enter_userspace(void *arg1, void *arg2, addr_t sp);
void arch_longjmp_iframe(iframe* frame);
#ifdef __cplusplus
}
#endif
#endif /* KERNEL_ARCH_RISCV64_THREAD_TYPES_H */