0644e90c5d
This commit can be removed when updating to the latest Fiasco.OC version. Fixes ssumpf/foc#10
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
INTERFACE:
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#include "types.h"
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//----------------------------------------------------------------------------
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IMPLEMENTATION[arm && armv5]:
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PRIVATE static inline NOEXPORT NEEDS["types.h"]
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void
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Sys_call_page::set_utcb_get_code(Mword *sys_calls)
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{
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*(sys_calls++) = 0xe3e00a02; // mvn r0, #8192
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*(sys_calls++) = 0xe5100fff; // ldr r0, [r0, -#4095]
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*(sys_calls++) = 0xe1a0f00e; // mov pc, lr
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}
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//----------------------------------------------------------------------------
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IMPLEMENTATION[arm && (armv6 || armv7)]:
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PRIVATE static inline NOEXPORT NEEDS["types.h"]
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void
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Sys_call_page::set_utcb_get_code(Mword *sys_calls)
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{
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*(sys_calls++) = 0xee1d0f70; // mrc 15, 0, r0, cr13, cr0, {3}
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*(sys_calls++) = 0xe1a0f00e; // mov pc, lr
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}
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//----------------------------------------------------------------------------
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IMPLEMENTATION:
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#include <cstring>
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#include "kernel_task.h"
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#include "mem_layout.h"
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#include "vmem_alloc.h"
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#include "panic.h"
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IMPLEMENT static
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void
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Sys_call_page::init()
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{
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Mword *sys_calls = (Mword*)Mem_layout::Syscalls;
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if (!Vmem_alloc::page_alloc(sys_calls,
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Vmem_alloc::NO_ZERO_FILL, Vmem_alloc::User))
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panic("FIASCO: can't allocate system-call page.\n");
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for (unsigned i = 0; i < Config::PAGE_SIZE / sizeof(Mword); i++)
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sys_calls[i] = 0xef000000; // svc
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set_utcb_get_code((Mword*)(Mem_layout::Syscalls + 0xf00));
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Kernel_task::kernel_task()
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->set_attributes(Virt_addr(Mem_layout::Syscalls),
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Page::Attr(Page::Rights::URX(), Page::Type::Normal(),
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Page::Kern::Global()),
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true, 0 /*kernel ASID*/);
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Mem_unit::flush_cache();
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}
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