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-rw-r--r--src/arch/sparc/intregfile.cc8
-rw-r--r--src/arch/sparc/isa/decoder.isa8
-rw-r--r--src/arch/sparc/isa/formats/integerop.isa2
-rw-r--r--src/arch/sparc/process.cc66
4 files changed, 57 insertions, 27 deletions
diff --git a/src/arch/sparc/intregfile.cc b/src/arch/sparc/intregfile.cc
index 0cc0a886a..bef62f6ae 100644
--- a/src/arch/sparc/intregfile.cc
+++ b/src/arch/sparc/intregfile.cc
@@ -60,9 +60,9 @@ void IntRegFile::clear()
{
int x;
for (x = 0; x < MaxGL; x++)
- memset(regGlobals[x], 0, sizeof(regGlobals[x]));
+ memset(regGlobals[x], 0, sizeof(IntReg) * RegsPerFrame);
for(int x = 0; x < 2 * NWindows; x++)
- bzero(regSegments[x], sizeof(regSegments[x]));
+ bzero(regSegments[x], sizeof(IntReg) * RegsPerFrame);
}
IntRegFile::IntRegFile()
@@ -84,8 +84,10 @@ IntReg IntRegFile::readReg(int intReg)
Fault IntRegFile::setReg(int intReg, const IntReg &val)
{
if(intReg)
+ {
DPRINTF(Sparc, "Wrote register %d = 0x%x\n", intReg, val);
- regView[intReg >> FrameOffsetBits][intReg & FrameOffsetMask] = val;
+ regView[intReg >> FrameOffsetBits][intReg & FrameOffsetMask] = val;
+ }
return NoFault;
}
diff --git a/src/arch/sparc/isa/decoder.isa b/src/arch/sparc/isa/decoder.isa
index 304c97f2f..3c5236661 100644
--- a/src/arch/sparc/isa/decoder.isa
+++ b/src/arch/sparc/isa/decoder.isa
@@ -106,7 +106,7 @@ decode OP default Unknown::unknown()
}
}
//SETHI (or NOP if rd == 0 and imm == 0)
- 0x4: SetHi::sethi({{Rd = imm;}});
+ 0x4: SetHi::sethi({{Rd.udw = imm;}});
0x5: Trap::fbpfcc({{fault = new FpDisabled;}});
0x6: Trap::fbfcc({{fault = new FpDisabled;}});
}
@@ -535,15 +535,15 @@ decode OP default Unknown::unknown()
0x10: Trap::array8({{fault = new IllegalInstruction;}});
0x12: Trap::array16({{fault = new IllegalInstruction;}});
0x14: Trap::array32({{fault = new IllegalInstruction;}});
- 0x18: BasicOperate::alignaddress({{
+ 0x18: BasicOperate::alignaddr({{
uint64_t sum = Rs1 + Rs2;
- Frd = sum & ~7;
+ Rd = sum & ~7;
Gsr = (Gsr & ~7) | (sum & 7);
}});
0x19: Trap::bmask({{fault = new IllegalInstruction;}});
0x1A: BasicOperate::alignaddresslittle({{
uint64_t sum = Rs1 + Rs2;
- Frd = sum & ~7;
+ Rd = sum & ~7;
Gsr = (Gsr & ~7) | ((~sum + 1) & 7);
}});
0x20: Trap::fcmple16({{fault = new IllegalInstruction;}});
diff --git a/src/arch/sparc/isa/formats/integerop.isa b/src/arch/sparc/isa/formats/integerop.isa
index 27616216e..83c7e6958 100644
--- a/src/arch/sparc/isa/formats/integerop.isa
+++ b/src/arch/sparc/isa/formats/integerop.isa
@@ -67,7 +67,7 @@ output header {{
{
}
- int32_t imm;
+ int64_t imm;
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
diff --git a/src/arch/sparc/process.cc b/src/arch/sparc/process.cc
index 150664148..31989cfe2 100644
--- a/src/arch/sparc/process.cc
+++ b/src/arch/sparc/process.cc
@@ -56,11 +56,11 @@ SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile,
// Set up stack. On SPARC Linux, stack goes from the top of memory
// downward, less the hole for the kernel address space.
- stack_base = ((Addr)0x80000000000ULL);
+ stack_base = (Addr)0x80000000000ULL;
// Set up region for mmaps. Tru64 seems to start just above 0 and
// grow up from there.
- mmap_start = mmap_end = 0x800000;
+ mmap_start = mmap_end = 0xfffff80000000000ULL;
// Set pointer for next thread stack. Reserve 8M for main stack.
next_thread_stack_base = stack_base - (8 * 1024 * 1024);
@@ -110,6 +110,12 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
{
Process::startup();
+ string filename;
+ if(argv.size() < 1)
+ filename = "";
+ else
+ filename = argv[0];
+
Addr alignmentMask = ~(intSize - 1);
// load object file into target memory
@@ -194,8 +200,13 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
//Figure out how big the initial stack needs to be
- //Each auxilliary vector is two 8 byte words
- int aux_data_size = 2 * intSize * auxv.size();
+ // The unaccounted for 0 at the top of the stack
+ int mysterious_size = intSize;
+
+ //This is the name of the file which is present on the initial stack
+ //It's purpose is to let the user space linker examine the original file.
+ int file_name_size = filename.size() + 1;
+
int env_data_size = 0;
for (int i = 0; i < envp.size(); ++i) {
env_data_size += envp[i].size() + 1;
@@ -205,27 +216,33 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
arg_data_size += argv[i].size() + 1;
}
- int aux_array_size = intSize * 2 * (auxv.size() + 1);
-
- int argv_array_size = intSize * (argv.size() + 1);
- int envp_array_size = intSize * (envp.size() + 1);
-
- int argc_size = intSize;
- int window_save_size = intSize * 16;
-
+ //The info_block needs to be padded so it's size is a multiple of the
+ //alignment mask. Also, it appears that there needs to be at least some
+ //padding, so if the size is already a multiple, we need to increase it
+ //anyway.
int info_block_size =
- (aux_data_size +
+ (file_name_size +
env_data_size +
arg_data_size +
- ~alignmentMask) & alignmentMask;
+ intSize) & alignmentMask;
int info_block_padding =
info_block_size -
- aux_data_size -
+ file_name_size -
env_data_size -
arg_data_size;
+ //Each auxilliary vector is two 8 byte words
+ int aux_array_size = intSize * 2 * (auxv.size() + 1);
+
+ int envp_array_size = intSize * (envp.size() + 1);
+ int argv_array_size = intSize * (argv.size() + 1);
+
+ int argc_size = intSize;
+ int window_save_size = intSize * 16;
+
int space_needed =
+ mysterious_size +
info_block_size +
aux_array_size +
envp_array_size +
@@ -242,10 +259,11 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
roundUp(stack_size, pageSize));
// map out initial stack contents
- Addr aux_data_base = stack_base - aux_data_size - info_block_padding;
- Addr env_data_base = aux_data_base - env_data_size;
+ Addr mysterious_base = stack_base - mysterious_size;
+ Addr file_name_base = mysterious_base - file_name_size;
+ Addr env_data_base = file_name_base - env_data_size;
Addr arg_data_base = env_data_base - arg_data_size;
- Addr auxv_array_base = arg_data_base - aux_array_size;
+ Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding;
Addr envp_array_base = auxv_array_base - envp_array_size;
Addr argv_array_base = envp_array_base - argv_array_size;
Addr argc_base = argv_array_base - argc_size;
@@ -255,7 +273,7 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
#endif
DPRINTF(Sparc, "The addresses of items on the initial stack:\n");
- DPRINTF(Sparc, "0x%x - aux data\n", aux_data_base);
+ DPRINTF(Sparc, "0x%x - file name\n", file_name_base);
DPRINTF(Sparc, "0x%x - env data\n", env_data_base);
DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base);
DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base);
@@ -266,9 +284,19 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
DPRINTF(Sparc, "0x%x - stack min\n", stack_min);
// write contents to stack
+
+ // figure out argc
uint64_t argc = argv.size();
uint64_t guestArgc = TheISA::htog(argc);
+ //Write out the mysterious 0
+ uint64_t mysterious_zero = 0;
+ initVirtMem->writeBlob(mysterious_base,
+ (uint8_t*)&mysterious_zero, mysterious_size);
+
+ //Write the file name
+ initVirtMem->writeString(file_name_base, filename.c_str());
+
//Copy the aux stuff
for(int x = 0; x < auxv.size(); x++)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 05:16:18 +0000