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https://github.com/drasko/codezero.git
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7a81db8782
Added setting of utcb address to l4_thread_control. This is going to be moved to exchange_registers() since we need to pass both the utcb physical and virtual address and exregs fits such context modification better than thread_control.
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
/*
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* Generic to arch-specific interface for
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* exchange_registers()
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*
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* Copyright (C) 2008 Bahadir Balban
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*/
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#include <l4/macros.h>
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#include <l4lib/exregs.h>
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#include INC_GLUE(message.h)
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void exregs_set_mr(struct exregs_data *s, int offset, unsigned long val)
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{
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/* Get MR0 */
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u32 *mr = &s->context.MR0_REGISTER;
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/* Sanity check */
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BUG_ON(offset > MR_TOTAL || offset < 0);
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/* Set MR */
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mr[offset] = val;
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/* Set valid bit for mr register */
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s->valid_vect |= FIELD_TO_BIT(exregs_context_t, MR0_REGISTER) << offset;
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}
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void exregs_set_pager(struct exregs_data *s, l4id_t pagerid)
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{
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s->pagerid = pagerid;
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s->flags |= EXREGS_SET_PAGER;
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}
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void exregs_set_utcb(struct exregs_data *s, unsigned long phys,
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unsigned long virt)
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{
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s->utcb_phys = phys;
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s->utcb_virt = virt;
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s->flags |= EXREGS_SET_UTCB;
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}
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void exregs_set_stack(struct exregs_data *s, unsigned long sp)
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{
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s->context.sp = sp;
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s->valid_vect |= FIELD_TO_BIT(exregs_context_t, sp);
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}
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void exregs_set_pc(struct exregs_data *s, unsigned long pc)
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{
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s->context.pc = pc;
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s->valid_vect |= FIELD_TO_BIT(exregs_context_t, pc);
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}
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