31 lines
776 B
C
31 lines
776 B
C
#ifndef SPARC32_CONTEXT_H
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#define SPARC32_CONTEXT_H
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struct context {
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/* General registers */
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uint32_t regs[148];
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uint32_t pc;
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uint32_t npc;
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#define REG_O0 12
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#define REG_SP 18
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#define SP_LOC(ctx) (&(ctx)->regs[REG_SP])
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/* Flags */
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/* Optional stack contents */
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uint32_t return_addr;
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uint32_t param[0];
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};
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/* Create a new context in the given stack */
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struct context *
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init_context(uint8_t *stack, uint32_t stack_size, int num_param);
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/* Switch context */
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struct context *switch_to(struct context *);
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/* Holds physical address of boot context */
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extern unsigned long __boot_ctx;
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/* This can always be safely used to refer to the boot context */
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#define boot_ctx ((struct context *) phys_to_virt(__boot_ctx))
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#endif /* SPARC32_CONTEXT_H */
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