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fastmodel: add iris readMem and writeMem function

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Iris memory API allows us to access the memory inside the core, for
example the tightly coupled memory (TCM). If we access a memory address
which is not in the CPU, it also fire a request to memory system.

Change-Id: I5925214534a10e3a55b780c3d4ed06e7559aafe0
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45268
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Yu-hsin Wang
2021-05-10 12:28:19 +08:00
parent 4ae8db4aa4
commit 4560cf8531
2 changed files with 25 additions and 0 deletions
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23
src/arch/arm/fastmodel/iris/thread_context.cc
View File

@@ -39,11 +39,15 @@
#include "arch/arm/fastmodel/iris/thread_context.hh"
#include <cstdint>
#include <cstring>
#include <utility>
#include <vector>
#include "arch/arm/fastmodel/iris/cpu.hh"
#include "arch/arm/system.hh"
#include "arch/arm/utility.hh"
#include "base/logging.hh"
#include "iris/detail/IrisCppAdapter.h"
#include "iris/detail/IrisObjects.h"
#include "mem/se_translating_port_proxy.hh"
@@ -420,6 +424,25 @@ ThreadContext::remove(PCEvent *e)
return true;
}
void
ThreadContext::readMem(Addr addr, void *p, size_t size)
{
iris::r0master::MemoryReadResult r;
auto err = call().memory_read(_instId, r, 0, addr, 1, size);
panic_if(err != iris::r0master::E_ok, "readMem failed.");
std::memcpy(p, r.data.data(), size);
}
void
ThreadContext::writeMem(Addr addr, const void *p, size_t size)
{
std::vector<uint64_t> data((size + 7) / 8);
std::memcpy(data.data(), p, size);
iris::MemoryWriteResult r;
auto err = call().memory_write(_instId, r, 0, addr, 1, size, data);
panic_if(err != iris::r0master::E_ok, "writeMem failed.");
}
bool
ThreadContext::translateAddress(Addr &paddr, iris::MemorySpaceId p_space,
Addr vaddr, iris::MemorySpaceId v_space)

2
src/arch/arm/fastmodel/iris/thread_context.hh
View File

@@ -162,6 +162,8 @@ class ThreadContext : public gem5::ThreadContext
iris::IrisCppAdapter &call() const { return client.irisCall(); }
iris::IrisCppAdapter &noThrow() const { return client.irisCallNoThrow(); }
void readMem(Addr addr, void *p, size_t size);
void writeMem(Addr addr, const void *p, size_t size);
bool translateAddress(Addr &paddr, iris::MemorySpaceId p_space,
Addr vaddr, iris::MemorySpaceId v_space);