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Add SVC handler

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This commit is contained in:
Ryan Teal 2019-07-02 21:04:52 +01:00
parent ffbcf0fb33
commit f8605a417d
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GPG Key ID: 8DBEE0F12C7E2D23
3 changed files with 159 additions and 3 deletions
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6
app/src/main/cpp/core/arm/cpu.cpp
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@ -1,6 +1,7 @@
#include <sys/mman.h>
#include "cpu.h"
#include "memory.h"
#include "core/hos/kernel/svc.h"
// TODO: Handle Unicorn errors
namespace core::cpu {
@ -47,9 +48,8 @@ namespace core::cpu {
uint32_t svcId = instr >> 5 & 0xFF;
// TODO: Handle SVCs
syslog(LOG_DEBUG, "SVC 0x%x called!", svcId);
uc_close(uc);
if(core::kernel::SvcHandler(svcId) == 0x177202)
uc_close(uc);
} else {
syslog(LOG_ERR, "Unhandled interrupt #%i", intno);
uc_close(uc);

151
app/src/main/cpp/core/hos/kernel/svc.cpp
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@ -0,0 +1,151 @@
#include <cstdint>
#include <syslog.h>
#include <utility>
#include "core/arm/cpu.h"
#include "svc.h"
namespace core::kernel {
std::pair<int, uint32_t(*)()> svcTable[] =
{
{0x01, nullptr},
{0x02, nullptr},
{0x03, nullptr},
{0x04, nullptr},
{0x05, nullptr},
{0x06, nullptr},
{0x07, nullptr},
{0x08, nullptr},
{0x09, nullptr},
{0x0a, nullptr},
{0x0b, nullptr},
{0x0c, nullptr},
{0x0d, nullptr},
{0x0e, nullptr},
{0x0f, nullptr},
{0x10, nullptr},
{0x11, nullptr},
{0x12, nullptr},
{0x13, nullptr},
{0x14, nullptr},
{0x15, nullptr},
{0x16, nullptr},
{0x17, nullptr},
{0x18, nullptr},
{0x19, nullptr},
{0x1a, nullptr},
{0x1b, nullptr},
{0x1c, nullptr},
{0x1d, nullptr},
{0x1e, nullptr},
{0x1f, nullptr},
{0x20, nullptr},
{0x21, nullptr},
{0x22, nullptr},
{0x23, nullptr},
{0x24, nullptr},
{0x25, nullptr},
{0x26, nullptr},
{0x27, nullptr},
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{0x29, nullptr},
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{0x64, nullptr},
{0x65, nullptr},
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{0x67, nullptr},
{0x68, nullptr},
{0x69, nullptr},
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{0x6b, nullptr},
{0x6c, nullptr},
{0x6d, nullptr},
{0x6e, nullptr},
{0x6f, nullptr},
{0x70, nullptr},
{0x71, nullptr},
{0x72, nullptr},
{0x73, nullptr},
{0x74, nullptr},
{0x75, nullptr},
{0x76, nullptr},
{0x77, nullptr},
{0x78, nullptr},
{0x79, nullptr},
{0x7a, nullptr},
{0x7b, nullptr},
{0x7c, nullptr},
{0x7d, nullptr},
{0x7e, nullptr},
{0x7f, nullptr}
};
uint32_t SvcHandler(uint32_t svc)
{
std::pair<int, uint32_t(*)()>* result = &(svcTable[svc]);
if(result->second)
return result->second();
else
{
syslog(LOG_ERR, "Unimplemented SVC 0x%02x", svc);
return 0x177202; // "Unimplemented behaviour"
}
}
}

5
app/src/main/cpp/core/hos/kernel/svc.h Normal file
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@ -0,0 +1,5 @@
#pragma once
namespace core::kernel {
uint32_t SvcHandler(uint32_t svc);
}