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5f5b8d6f8c
Signed-off-by: igor.v.kovalenko@gmail.com git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@508 f158a5a8-5612-0410-a976-696ce0be7e32
34 lines
811 B
C
34 lines
811 B
C
#ifndef SPARC64_CONTEXT_H
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#define SPARC64_CONTEXT_H
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#define STACK_BIAS 2047
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struct context {
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/* General registers */
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uint64_t regs[32];
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uint64_t pc;
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uint64_t npc;
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#define REG_O0 8
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#define REG_SP 14
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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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uint64_t return_addr;
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uint64_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, uint64_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 /* SPARC64_CONTEXT_H */
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