mirror of
https://gitlab.com/qemu-project/openbios.git
synced 2024-02-13 08:34:06 +08:00
32 lines
774 B
C
32 lines
774 B
C
|
#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 */
|