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authorAndreas Sandberg <andreas.sandberg@arm.com>2019-01-09 14:50:27 +0000
committerAndreas Sandberg <andreas.sandberg@arm.com>2019-01-10 17:55:42 +0000
commit0a36956261c67d61def90e1aefeb6c46568ff167 (patch)
tree5f6d72f83185698d45e1f4b3eba1537f1c370167 /src/arch/arm
parent13daa2e0620e71a1c11f94d1f8a864f73a52b94d (diff)
downloadgem5-0a36956261c67d61def90e1aefeb6c46568ff167.tar.xz
sim-se: Refactor clone to avoid most ifdefs
Some parts of clone are architecture dependent. In some cases, we are able to use architecture-specific helper functions or register aliases. However, there is still some architecture-specific that is protected by ifdefs in the common clone implementation. Move these architecture-specific bits to the architecture-specific OS class instead to avoid these ifdefs and make the code a bit more readable. Change-Id: Ia0903d738d0ba890863bddfa77e3b717db7f45de Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Cc: Giacomo Travaglini <giacomo.travaglini@arm.com> Cc: Javier Setoain <javier.setoain@arm.com> Cc: Brandon Potter <Brandon.Potter@amd.com> Reviewed-on: https://gem5-review.googlesource.com/c/15435 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Brandon Potter <Brandon.Potter@amd.com>
Diffstat (limited to 'src/arch/arm')
-rw-r--r--src/arch/arm/linux/linux.hh21
1 files changed, 19 insertions, 2 deletions
diff --git a/src/arch/arm/linux/linux.hh b/src/arch/arm/linux/linux.hh
index 73f0fa699..9e9ca1f80 100644
--- a/src/arch/arm/linux/linux.hh
+++ b/src/arch/arm/linux/linux.hh
@@ -45,9 +45,26 @@
#ifndef __ARCH_ARM_LINUX_LINUX_HH__
#define __ARCH_ARM_LINUX_LINUX_HH__
+#include "arch/arm/utility.hh"
#include "kern/linux/linux.hh"
-class ArmLinux32 : public Linux
+class ArmLinux : public Linux
+{
+ public:
+ static void
+ archClone(uint64_t flags,
+ Process *pp, Process *cp,
+ ThreadContext *ptc, ThreadContext *ctc,
+ uint64_t stack, uint64_t tls)
+ {
+ ArmISA::copyRegs(ptc, ctc);
+
+ if (stack)
+ ctc->setIntReg(TheISA::StackPointerReg, stack);
+ }
+};
+
+class ArmLinux32 : public ArmLinux
{
public:
@@ -256,7 +273,7 @@ class ArmLinux32 : public Linux
};
};
-class ArmLinux64 : public Linux
+class ArmLinux64 : public ArmLinux
{
public: