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#ifndef PPC_CONTEXT_H
#define PPC_CONTEXT_H
struct context {
#define SP_LOC(ctx) (&(ctx)->sp)
unsigned long _sp;
unsigned long return_addr;
unsigned long sp;
unsigned long pc;
/* General registers */
unsigned long regs[34];
#define REG_R3 3
#define REG_R4 7
#define REG_R5 8
#define REG_R6 9
#define REG_R7 10
/* Flags */
/* Optional stack contents */
unsigned long 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 /* PPC_CONTEXT_H */
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