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x86: Define a local ABI for system calls.

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These ABIs (one 32 bit and one 64 bit) take advantage of the
GenericSyscallABI and X86Linux::SyscallABI partial ABIs set up earlier.

This removes x86's dependence on the getSyscallArg and setSyscallReturn
Process methods.

Change-Id: Ia07834cea1afa827d77e590af5397e2a1e0e2099
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23443
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Gabe Black
2019-12-06 17:46:38 -08:00
parent 8c594cfbdb
commit 112e1cdfca
3 changed files with 50 additions and 6 deletions
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12
src/arch/x86/linux/process.cc
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@@ -250,7 +250,11 @@ setThreadArea32Func(SyscallDesc *desc, int callnum, ThreadContext *tc,
return 0;
}
static SyscallDescABI<DefaultSyscallABI> syscallDescs64[] = {
const std::vector<IntRegIndex> X86_64LinuxProcess::SyscallABI::ArgumentRegs = {
INTREG_RDI, INTREG_RSI, INTREG_RDX, INTREG_R10W, INTREG_R8W, INTREG_R9W
};
static SyscallDescABI<X86_64LinuxProcess::SyscallABI> syscallDescs64[] = {
/* 0 */ { "read", readFunc<X86Linux64> },
/* 1 */ { "write", writeFunc<X86Linux64> },
/* 2 */ { "open", openFunc<X86Linux64> },
@@ -590,7 +594,11 @@ X86_64LinuxProcess::clone(ThreadContext *old_tc, ThreadContext *new_tc,
X86_64Process::clone(old_tc, new_tc, (X86_64Process*)process, flags);
}
static SyscallDescABI<DefaultSyscallABI> syscallDescs32[] = {
const std::vector<IntRegIndex> I386LinuxProcess::SyscallABI::ArgumentRegs = {
INTREG_EBX, INTREG_ECX, INTREG_EDX, INTREG_ESI, INTREG_EDI, INTREG_EBP
};
static SyscallDescABI<I386LinuxProcess::SyscallABI> syscallDescs32[] = {
/* 0 */ { "restart_syscall" },
/* 1 */ { "exit", exitFunc },
/* 2 */ { "fork" },