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authorAli Saidi <Ali.Saidi@ARM.com>2011-05-04 20:38:26 -0500
committerAli Saidi <Ali.Saidi@ARM.com>2011-05-04 20:38:26 -0500
commit48f7fda706b854f053d66df5e14e0084df775910 (patch)
tree7a2c8ecf89e5c4530ada1453cfe756edaa8799be /util/statetrace/arch
parent632cf8dd80f29f85097aa90cd704ca01cc57ff39 (diff)
downloadgem5-48f7fda706b854f053d66df5e14e0084df775910.tar.xz
ARM: Add vfpv3 support to native trace.
Diffstat (limited to 'util/statetrace/arch')
-rw-r--r--util/statetrace/arch/arm/tracechild.cc45
-rw-r--r--util/statetrace/arch/arm/tracechild.hh15
2 files changed, 53 insertions, 7 deletions
diff --git a/util/statetrace/arch/arm/tracechild.cc b/util/statetrace/arch/arm/tracechild.cc
index 5dde3d567..79670bc8b 100644
--- a/util/statetrace/arch/arm/tracechild.cc
+++ b/util/statetrace/arch/arm/tracechild.cc
@@ -56,23 +56,28 @@ ARMTraceChild::ARMTraceChild()
{
foundMvn = false;
+ memset(&regs, 0, sizeof(regs));
+ memset(&oldregs, 0, sizeof(regs));
+ memset(&fpregs, 0, sizeof(vfp_regs));
+ memset(&oldfpregs, 0, sizeof(vfp_regs));
+
for (int x = 0; x < numregs; x++) {
- memset(&regs, 0, sizeof(regs));
- memset(&oldregs, 0, sizeof(regs));
regDiffSinceUpdate[x] = false;
}
+
+ assert(sizeof(regs.uregs)/sizeof(regs.uregs[0]) > CPSR);
}
bool
ARMTraceChild::sendState(int socket)
{
uint32_t regVal = 0;
- uint32_t message[numregs + 1];
+ uint64_t message[numregs + 1];
int pos = 1;
message[0] = 0;
for (int x = 0; x < numregs; x++) {
if (regDiffSinceUpdate[x]) {
- message[0] = message[0] | (1 << x);
+ message[0] = message[0] | (1ULL << x);
message[pos++] = getRegVal(x);
}
}
@@ -97,10 +102,21 @@ ARMTraceChild::sendState(int socket)
uint32_t
ARMTraceChild::getRegs(user_regs &myregs, int num)
{
- assert(num < numregs && num >= 0);
+ assert(num <= CPSR && num >= 0);
return myregs.uregs[num];
}
+uint64_t
+ARMTraceChild::getFpRegs(vfp_regs &my_fp_regs, int num)
+{
+ assert(num >= F0 && num < numregs);
+ if (num == FPSCR)
+ return my_fp_regs.fpscr;
+
+ num -= F0;
+ return my_fp_regs.fpregs[num];
+}
+
bool
ARMTraceChild::update(int pid)
{
@@ -110,21 +126,36 @@ ARMTraceChild::update(int pid)
return false;
}
+ const uint32_t get_vfp_regs = 32;
+
+ oldfpregs = fpregs;
+ if (ptrace((__ptrace_request)get_vfp_regs, pid, 0, &fpregs) != 0) {
+ cerr << "update: " << strerror(errno) << endl;
+ return false;
+ }
+
for (unsigned int x = 0; x < numregs; x++)
regDiffSinceUpdate[x] = (getRegVal(x) != getOldRegVal(x));
+
return true;
}
int64_t
ARMTraceChild::getRegVal(int num)
{
- return getRegs(regs, num);
+ if (num <= CPSR)
+ return getRegs(regs, num);
+ else
+ return (int64_t)getFpRegs(fpregs, num);
}
int64_t
ARMTraceChild::getOldRegVal(int num)
{
- return getRegs(oldregs, num);
+ if (num <= CPSR)
+ return getRegs(oldregs, num);
+ else
+ return (int64_t)getFpRegs(oldfpregs, num);
}
ostream &
diff --git a/util/statetrace/arch/arm/tracechild.hh b/util/statetrace/arch/arm/tracechild.hh
index 9a4dc1921..06d7b0d4f 100644
--- a/util/statetrace/arch/arm/tracechild.hh
+++ b/util/statetrace/arch/arm/tracechild.hh
@@ -67,12 +67,27 @@ class ARMTraceChild : public TraceChild
R0, R1, R2, R3, R4, R5, R6, R7,
R8, R9, R10, FP, R12, SP, LR, PC,
CPSR,
+ F0, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, F13, F14, F15,
+ F16, F17, F18, F19, F20, F21, F22, F23, F24, F25, F26, F27, F28, F29,
+ F30, F31, FPSCR,
numregs
};
+
+ struct vfp_regs {
+ uint64_t fpregs[32];
+ uint32_t fpscr;
+ };
+
private:
uint32_t getRegs(user_regs& myregs, int num);
+ uint64_t getFpRegs(vfp_regs &myfpregs, int num);
+
user_regs regs;
user_regs oldregs;
+
+ vfp_regs fpregs;
+ vfp_regs oldfpregs;
+
bool regDiffSinceUpdate[numregs];
bool foundMvn;