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#ifndef SPARC32_CONTEXT_H
#define SPARC32_CONTEXT_H
struct context {
/* General registers */
uint32_t regs[32];
uint32_t pc;
uint32_t npc;
#define REG_O0 8
#define REG_SP 14
#define SP_LOC(ctx) (&(ctx)->regs[REG_SP])
/* Flags */
/* Optional stack contents */
uint32_t return_addr;
uint32_t param[0];
};
/* Create a new context in the given stack */
struct context *
init_context(uint8_t *stack, uint32_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 /* SPARC32_CONTEXT_H */
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