b1c4ba4ab6
Due to the ABI we are using we have to use the earm architecture moniker for the build system to behave correctly. This involves then some headers to move around. There is also a few related Makefile updates as well as minor source code corrections.
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/* The kernel call implemented in this file:
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* m_type: SYS_VMCTL
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*
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* The parameters for this kernel call are:
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* SVMCTL_WHO which process
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* SVMCTL_PARAM set this setting (VMCTL_*)
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* SVMCTL_VALUE to this value
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*/
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#include "kernel/system.h"
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#include <assert.h>
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#include <minix/type.h>
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#include "arch_proto.h"
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static void set_ttbr(struct proc *p, u32_t ttbr, u32_t *v)
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{
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/* Set process TTBR. */
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p->p_seg.p_ttbr = ttbr;
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assert(p->p_seg.p_ttbr);
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p->p_seg.p_ttbr_v = v;
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if(p == get_cpulocal_var(ptproc)) {
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write_ttbr0(p->p_seg.p_ttbr);
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}
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if(p->p_nr == VM_PROC_NR) {
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if (arch_enable_paging(p) != OK)
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panic("arch_enable_paging failed");
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}
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RTS_UNSET(p, RTS_VMINHIBIT);
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}
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/*===========================================================================*
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* arch_do_vmctl *
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*===========================================================================*/
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int arch_do_vmctl(m_ptr, p)
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register message *m_ptr; /* pointer to request message */
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struct proc *p;
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{
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switch(m_ptr->SVMCTL_PARAM) {
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case VMCTL_GET_PDBR:
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/* Get process page directory base reg (TTBR). */
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m_ptr->SVMCTL_VALUE = p->p_seg.p_ttbr;
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return OK;
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case VMCTL_SETADDRSPACE:
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set_ttbr(p, m_ptr->SVMCTL_PTROOT, (u32_t *) m_ptr->SVMCTL_PTROOT_V);
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return OK;
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case VMCTL_FLUSHTLB:
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{
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reload_ttbr0();
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return OK;
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}
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}
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printf("arch_do_vmctl: strange param %d\n", m_ptr->SVMCTL_PARAM);
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return EINVAL;
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}
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