36 lines
874 B
C
36 lines
874 B
C
#ifndef SPARC64_CONTEXT_H
|
|
#define SPARC64_CONTEXT_H
|
|
|
|
#define STACK_BIAS 2047
|
|
|
|
struct context {
|
|
/* General registers */
|
|
uint64_t regs[154];
|
|
uint64_t pc;
|
|
uint64_t npc;
|
|
#define REG_O0 14
|
|
#define REG_SP 20
|
|
#define SP_LOC(ctx) (&(ctx)->regs[REG_SP])
|
|
uint64_t tba;
|
|
uint64_t _pad;
|
|
uint64_t tregs[16];
|
|
/* Flags */
|
|
/* Optional stack contents */
|
|
uint64_t return_addr;
|
|
uint64_t param[0];
|
|
};
|
|
|
|
/* Create a new context in the given stack */
|
|
struct context *
|
|
init_context(uint8_t *stack, uint64_t stack_size, int num_param);
|
|
|
|
/* Switch context */
|
|
struct context *switch_to(struct context *);
|
|
|
|
/* Holds physical address of boot context */
|
|
extern unsigned long __boot_ctx;
|
|
|
|
/* This can always be safely used to refer to the boot context */
|
|
#define boot_ctx ((struct context *) phys_to_virt(__boot_ctx))
|
|
|
|
#endif /* SPARC64_CONTEXT_H */
|