// Return empty string.
PolyWord EmptyString(void)
{
return (PolyObject*)IoEntry(POLY_SYS_emptystring);
}
Handle poly_dispatch_c(TaskData *taskData, Handle args, Handle code)
{
unsigned c = get_C_unsigned(taskData, DEREFWORDHANDLE(code));
switch (c)
{
case 1:
return exportNative(taskData, args); // Export
case 2:
raise_syscall(taskData, "C Export has been withdrawn", 0);
return 0;
case 3:
return exportPortable(taskData, args); // Export as portable format
case 9: // Return the GIT version if appropriate
{
return SAVE(C_string_to_Poly(taskData, GitVersion));
}
case 10: // Return the RTS version string.
{
const char *version;
switch (machineDependent->MachineArchitecture())
{
case MA_Interpreted: version = "Portable-" TextVersion; break;
case MA_I386: version = "I386-" TextVersion; break;
case MA_X86_64: version = "X86_64-" TextVersion; break;
default: version = "Unknown-" TextVersion; break;
}
return SAVE(C_string_to_Poly(taskData, version));
}
case 11: // Return the RTS copyright string
return SAVE(C_string_to_Poly(taskData, poly_runtime_system_copyright));
case 12: // Return the architecture
{
const char *arch;
switch (machineDependent->MachineArchitecture())
{
case MA_Interpreted: arch = "Interpreted"; break;
case MA_I386: arch = "I386"; break;
case MA_X86_64: arch = "X86_64"; break;
default: arch = "Unknown"; break;
}
return SAVE(C_string_to_Poly(taskData, arch));
}
case 13: // Share common immutable data.
{
ShareData(taskData, args);
return SAVE(TAGGED(0));
}
// ObjSize and ShowSize have their own IO vector entries but really they don't
// need them. Include them here and add ObjProfile.
case 14:
return ObjSize(taskData, args);
case 15:
return ShowSize(taskData, args);
case 16:
return ObjProfile(taskData, args);
/* 17 and 18 are no longer used. */
case 19: // Return the RTS argument help string.
return SAVE(C_string_to_Poly(taskData, RTSArgHelp()));
case 20: // Write a saved state file.
return SaveState(taskData, args);
case 21: // Load a saved state file and any ancestors.
return LoadState(taskData, false, args);
case 22: // Show the hierarchy.
return ShowHierarchy(taskData);
case 23: // Change the name of the immediate parent stored in a child
return RenameParent(taskData, args);
case 24: // Return the name of the immediate parent stored in a child
return ShowParent(taskData, args);
case 25: // Old statistics - now removed
case 26:
raise_exception_string(taskData, EXC_Fail, "No statistics available");
case 27: // Get number of user statistics available
return Make_arbitrary_precision(taskData, N_PS_USER);
case 28: // Set an entry in the user stats table.
{
unsigned index = get_C_unsigned(taskData, DEREFHANDLE(args)->Get(0));
if (index >= N_PS_USER)
raise_exception0(taskData, EXC_subscript);
POLYSIGNED value = getPolySigned(taskData, DEREFHANDLE(args)->Get(1));
globalStats.setUserCounter(index, value);
Make_arbitrary_precision(taskData, 0);
}
case 29: // Get local statistics.
return globalStats.getLocalStatistics(taskData);
case 30: // Get remote statistics. The argument is the process ID to get the statistics.
return globalStats.getRemoteStatistics(taskData, getPolyUnsigned(taskData, DEREFHANDLE(args)));
case 31: // Store a module
return StoreModule(taskData, args);
case 32: // Load a module
return LoadModule(taskData, args);
case 33: // Load hierarchy. This provides a complete list of children and parents.
return LoadState(taskData, true, args);
case 34: // Return the system directory for modules. This is configured differently
// in Unix and in Windows.
#if (defined(MODULEDIR))
return SAVE(C_string_to_Poly(taskData, Xstr(MODULEDIR)));
#elif (defined(_WIN32) && ! defined(__CYGWIN__))
{
// This registry key is configured when Poly/ML is installed using the installer.
// It gives the path to the Poly/ML installation directory. We return the
// Modules subdirectory.
HKEY hk;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE,
_T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths\\PolyML.exe"), 0,
KEY_QUERY_VALUE, &hk) == ERROR_SUCCESS)
{
DWORD valSize;
if (RegQueryValueEx(hk, _T("Path"), 0, NULL, NULL, &valSize) == ERROR_SUCCESS)
{
#define MODULEDIR _T("Modules")
TempString buff((TCHAR*)malloc(valSize + (_tcslen(MODULEDIR) + 1)*sizeof(TCHAR)));
DWORD dwType;
if (RegQueryValueEx(hk, _T("Path"), 0, &dwType, (LPBYTE)(LPTSTR)buff, &valSize) == ERROR_SUCCESS)
{
RegCloseKey(hk);
// The registry entry should end with a backslash.
_tcscat(buff, MODULEDIR);
return SAVE(C_string_to_Poly(taskData, buff));
}
}
RegCloseKey(hk);
}
return SAVE(C_string_to_Poly(taskData, ""));
}
#else
return SAVE(C_string_to_Poly(taskData, ""));
#endif
case 50: // GCD
return gcd_arbitrary(taskData, SAVE(DEREFHANDLE(args)->Get(0)), SAVE(DEREFHANDLE(args)->Get(1)));
case 51: // LCM
return lcm_arbitrary(taskData, SAVE(DEREFHANDLE(args)->Get(0)), SAVE(DEREFHANDLE(args)->Get(1)));
// These next ones were originally in process_env and have now been moved here,
case 100: /* Return the maximum word segment size. */
return taskData->saveVec.push(TAGGED(MAX_OBJECT_SIZE));
case 101: /* Return the maximum string size (in bytes).
It is the maximum number of bytes in a segment
less one word for the length field. */
return taskData->saveVec.push(TAGGED((MAX_OBJECT_SIZE)*sizeof(PolyWord) - sizeof(PolyWord)));
case 102: /* Test whether the supplied address is in the io area.
This was previously done by having get_flags return
256 but this was changed so that get_flags simply
returns the top byte of the length word. */
{
PolyWord *pt = (PolyWord*)DEREFWORDHANDLE(args);
if (gMem.IsIOPointer(pt))
return Make_arbitrary_precision(taskData, 1);
else return Make_arbitrary_precision(taskData, 0);
}
case 103: /* Return the register mask for the given function.
This is used by the code-generator to find out
which registers are modified by the function and
so need to be saved if they are used by the caller. */
{
PolyObject *pt = DEREFWORDHANDLE(args);
if (gMem.IsIOPointer(pt))
{
/* IO area. We need to get this from the vector. */
int i;
for (i=0; i < POLY_SYS_vecsize; i++)
{
if (pt == (PolyObject*)IoEntry(i))
{
int regMask = taskData->GetIOFunctionRegisterMask(i);
POLYUNSIGNED props = rtsProperties(taskData, i);
return taskData->saveVec.push(TAGGED(regMask | props));
}
}
raise_exception_string(taskData, EXC_Fail, "Io pointer not found");
}
else
{
/* We may have a pointer to the code or a pointer to
a closure. If it's a closure we have to find the
code. */
if (! pt->IsCodeObject() && ! pt->IsByteObject())
pt = pt->Get(0).AsObjPtr();
/* Should now be a code object. */
if (pt->IsCodeObject())
{
/* Compiled code. This is the second constant in the
constant area. */
PolyWord *codePt = pt->ConstPtrForCode();
PolyWord mask = codePt[1];
// A real mask will be an integer.
if (IS_INT(mask)) return SAVE(mask);
else raise_exception_string(taskData, EXC_Fail, "Invalid mask");
}
else raise_exception_string(taskData, EXC_Fail, "Not a code pointer");
}
}
case 104: return Make_arbitrary_precision(taskData, POLY_version_number);
case 105: /* Get the name of the function. */
{
PolyObject *pt = DEREFWORDHANDLE(args);
if (gMem.IsIOPointer(pt))
{
/* IO area. */
int i;
for (i=0; i < POLY_SYS_vecsize; i++)
{
if (pt == (PolyObject*)IoEntry(i))
{
char buff[8];
sprintf(buff, "RTS%d", i);
return SAVE(C_string_to_Poly(taskData, buff));
}
}
raise_syscall(taskData, "Io pointer not found", 0);
}
else if (pt->IsCodeObject()) /* Should now be a code object. */
{
/* Compiled code. This is the first constant in the constant area. */
PolyWord *codePt = pt->ConstPtrForCode();
PolyWord name = codePt[0];
/* May be zero indicating an anonymous segment - return null string. */
if (name == PolyWord::FromUnsigned(0))
return SAVE(C_string_to_Poly(taskData, ""));
else return SAVE(name);
}
else raise_syscall(taskData, "Not a code pointer", 0);
}
default:
{
char msg[100];
sprintf(msg, "Unknown poly-specific function: %d", c);
raise_exception_string(taskData, EXC_Fail, msg);
return 0;
}
}
}
