mirror of
https://github.com/vishapoberon/compiler.git
synced 2026-04-06 08:42:24 +00:00
299 lines
11 KiB
C
299 lines
11 KiB
C
#ifndef SYSTEM__h
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#define SYSTEM__h
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#if defined(_WIN64)
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typedef long long SYSTEM_INT64;
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typedef unsigned long long SYSTEM_CARD64;
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#else
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typedef long SYSTEM_INT64;
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typedef unsigned long SYSTEM_CARD64;
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#endif
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typedef int SYSTEM_INT32;
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typedef unsigned int SYSTEM_CARD32;
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typedef short int SYSTEM_INT16;
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typedef unsigned short int SYSTEM_CARD16;
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typedef signed char SYSTEM_INT8;
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typedef unsigned char SYSTEM_CARD8;
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#if (__SIZEOF_POINTER__ == 8)
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#if defined(_WIN64)
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typedef unsigned long long SYSTEM_PTRINT;
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typedef unsigned long long uintptr_t;
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typedef unsigned long long size_t;
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#else
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typedef unsigned long SYSTEM_PTRINT;
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typedef unsigned long uintptr_t;
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typedef unsigned long size_t;
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#endif
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#else
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typedef unsigned int SYSTEM_PTRINT;
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typedef unsigned int uintptr_t;
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typedef unsigned int size_t;
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#endif
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#define _SIZE_T_DEFINED_ // For OpenBSD
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void *memcpy(void *dest, const void *source, size_t size);
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// The compiler uses 'import' and 'export' which translate to 'extern' and
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// nothing respectively.
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#define import extern
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#define export
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// Known constants
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#define NIL ((void*)0)
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#define __MAXEXT 16
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#define POINTER__typ ((LONGINT*)(1)) // not NIL and not a valid type
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// Oberon types
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typedef char BOOLEAN;
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typedef unsigned char SYSTEM_BYTE;
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typedef unsigned char CHAR;
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typedef signed char SHORTINT;
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typedef float REAL;
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typedef double LONGREAL;
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typedef void* SYSTEM_PTR;
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// Unsigned variants are for use by shift and rotate macros.
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typedef unsigned char U_SYSTEM_BYTE;
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typedef unsigned char U_CHAR;
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typedef unsigned char U_SHORTINT;
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// For 32 bit builds, the size of LONGINT depends on a make option:
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#if (__SIZEOF_POINTER__ == 8) || defined(LARGE) || defined(_WIN64)
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typedef int INTEGER; // INTEGER is 32 bit.
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typedef long long LONGINT; // LONGINT is 64 bit. (long long is always 64 bits, while long can be 32 bits e.g. under MSC/MingW)
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typedef unsigned int U_INTEGER;
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typedef unsigned long long U_LONGINT;
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#else
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typedef short int INTEGER; // INTEGER is 16 bit.
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typedef long LONGINT; // LONGINT is 32 bit.
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typedef unsigned short int U_INTEGER;
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typedef unsigned long U_LONGINT;
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#endif
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typedef U_LONGINT SET;
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typedef U_LONGINT U_SET;
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// OS Memory allocation interfaces are in PlatformXXX.Mod
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extern LONGINT Platform_OSAllocate (LONGINT size);
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extern void Platform_OSFree (LONGINT addr);
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// Run time system routines in SYSTEM.c
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extern LONGINT SYSTEM_XCHK (LONGINT i, LONGINT ub);
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extern LONGINT SYSTEM_RCHK (LONGINT i, LONGINT ub);
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extern LONGINT SYSTEM_ASH (LONGINT i, LONGINT n);
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extern LONGINT SYSTEM_ABS (LONGINT i);
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extern double SYSTEM_ABSD (double i);
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extern void SYSTEM_INHERIT(LONGINT *t, LONGINT *t0);
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extern void SYSTEM_ENUMP (void *adr, LONGINT n, void (*P)());
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extern void SYSTEM_ENUMR (void *adr, LONGINT *typ, LONGINT size, LONGINT n, void (*P)());
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extern LONGINT SYSTEM_DIV (U_LONGINT x, U_LONGINT y);
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extern LONGINT SYSTEM_MOD (U_LONGINT x, U_LONGINT y);
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extern LONGINT SYSTEM_ENTIER (double x);
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// Signal handling in SYSTEM.c
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#ifndef _WIN32
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extern void SystemSetHandler(int s, uintptr_t h);
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#else
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extern void SystemSetInterruptHandler(uintptr_t h);
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extern void SystemSetQuitHandler (uintptr_t h);
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#endif
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// String comparison
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static int __str_cmp(CHAR *x, CHAR *y){
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LONGINT i = 0;
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CHAR ch1, ch2;
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do {ch1 = x[i]; ch2 = y[i]; i++;
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if (!ch1) return -(int)ch2;
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} while (ch1==ch2);
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return (int)ch1 - (int)ch2;
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}
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#define __STRCMP(a,b) __str_cmp((CHAR*)(a), (CHAR*)(b))
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// Inline string, record and array copy
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#define __COPY(s, d, n) {char*_a=(void*)s,*_b=(void*)d; LONGINT _i=0,_t=n-1; \
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while(_i<_t&&((_b[_i]=_a[_i])!=0)){_i++;};_b[_i]=0;}
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#define __DUP(x, l, t) x=(void*)memcpy((void*)(uintptr_t)Platform_OSAllocate(l*sizeof(t)),x,l*sizeof(t))
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#define __DUPARR(v, t) v=(void*)memcpy(v##__copy,v,sizeof(t))
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#define __DEL(x) Platform_OSFree((LONGINT)(uintptr_t)x)
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/* SYSTEM ops */
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#define __VAL(t, x) (*(t*)&(x))
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#define __GET(a, x, t) x= *(t*)(uintptr_t)(a)
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#define __PUT(a, x, t) *(t*)(uintptr_t)(a)=x
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#define __LSHL(x, n, t) ((t)((U_##t)(x)<<(n)))
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#define __LSHR(x, n, t) ((t)((U_##t)(x)>>(n)))
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#define __LSH(x, n, t) ((n)>=0? __LSHL(x, n, t): __LSHR(x, -(n), t))
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#define __ASHL(x, n) ((LONGINT)(x)<<(n))
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#define __ASHR(x, n) ((LONGINT)(x)>>(n))
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#define __ASH(x, n) ((n)>=0?__ASHL(x,n):__ASHR(x,-(n)))
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#define __ROTL(x, n, t) ((t)((U_##t)(x)<<(n)|(U_##t)(x)>>(8*sizeof(t)-(n))))
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#define __ROTR(x, n, t) ((t)((U_##t)(x)>>(n)|(U_##t)(x)<<(8*sizeof(t)-(n))))
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#define __ROT(x, n, t) ((n)>=0? __ROTL(x, n, t): __ROTR(x, -(n), t))
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#define __BIT(x, n) (*(U_LONGINT*)(x)>>(n)&1)
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#define __MOVE(s, d, n) memcpy((char*)(uintptr_t)(d),(char*)(uintptr_t)(s),n)
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#define __ASHF(x, n) SYSTEM_ASH((LONGINT)(x), (LONGINT)(n))
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#define __SHORT(x, y) ((int)((U_LONGINT)(x)+(y)<(y)+(y)?(x):(__HALT(-8),0)))
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#define __SHORTF(x, y) ((int)(__RF((x)+(y),(y)+(y))-(y)))
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#define __CHR(x) ((CHAR)__R(x, 256))
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#define __CHRF(x) ((CHAR)__RF(x, 256))
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#define __DIV(x, y) ((x)>=0?(x)/(y):-(((y)-1-(x))/(y)))
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#define __DIVF(x, y) SYSTEM_DIV((LONGINT)(x),(LONGINT)(y))
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#define __MOD(x, y) ((x)>=0?(x)%(y):__MODF(x,y))
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#define __MODF(x, y) SYSTEM_MOD((LONGINT)(x),(LONGINT)(y))
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#define __ENTIER(x) SYSTEM_ENTIER(x)
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#define __ABS(x) (((x)<0)?-(x):(x))
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#define __ABSF(x) SYSTEM_ABS((LONGINT)(x))
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#define __ABSFD(x) SYSTEM_ABSD((double)(x))
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#define __CAP(ch) ((CHAR)((ch)&0x5f))
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#define __ODD(x) ((x)&1)
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#define __IN(x, s) (((s)>>(x))&1)
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#define __SETOF(x) ((SET)1<<(x))
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#define __SETRNG(l, h) ((~(SET)0<<(l))&~(SET)0>>(8*sizeof(SET)-1-(h)))
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#define __MASK(x, m) ((x)&~(m))
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// Runtime checks
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#define __X(i, ub) (((U_LONGINT)(i)<(U_LONGINT)(ub))?i:(__HALT(-2),0))
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#define __XF(i, ub) SYSTEM_XCHK((LONGINT)(i), (LONGINT)(ub))
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#define __R(i, ub) (((U_LONGINT)(i)<(U_LONGINT)(ub))?i:(__HALT(-8),0))
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#define __RF(i, ub) SYSTEM_RCHK((LONGINT)(i),(LONGINT)(ub))
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#define __RETCHK __retchk: __HALT(-3); return 0;
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#define __CASECHK __HALT(-4)
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#define __WITHCHK __HALT(-7)
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#define __GUARDP(p, typ, level) ((typ*)(__ISP(p,typ,level)?p:(__HALT(-5),p)))
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#define __GUARDR(r, typ, level) (*((typ*)(__IS(r##__typ,typ,level)?r:(__HALT(-5),r))))
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#define __GUARDA(p, typ, level) ((struct typ*)(__IS(__TYPEOF(p),typ,level)?p:(__HALT(-5),p)))
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#define __GUARDEQR(p, dyntyp, typ) if(dyntyp!=typ##__typ) __HALT(-6);*(p)
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#define __GUARDEQP(p, typ) if(__TYPEOF(p)!=typ##__typ)__HALT(-6);*(p)
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// Module entry/registration/exit
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extern void Heap_REGCMD();
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extern SYSTEM_PTR Heap_REGMOD();
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extern void Heap_REGTYP();
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extern void Heap_INCREF();
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#define __DEFMOD static void *m; if (m!=0) {return m;}
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#define __REGCMD(name, cmd) Heap_REGCMD(m, (CHAR*)name, cmd)
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#define __REGMOD(name, enum) if (m==0) {m = Heap_REGMOD((CHAR*)name,enum);}
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#define __ENDMOD return m
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#define __MODULE_IMPORT(name) Heap_INCREF(name##__init())
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// Main module initialisation, registration and finalisation
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extern void Platform_Init(INTEGER argc, LONGINT argv);
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extern void Heap_FINALL();
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#define __INIT(argc, argv) static void *m; Platform_Init((INTEGER)argc, (LONGINT)(uintptr_t)&argv);
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#define __REGMAIN(name, enum) m = Heap_REGMOD((CHAR*)name,enum)
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#define __FINI Heap_FINALL(); return 0
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// Assertions and Halts
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extern void Platform_Halt(LONGINT x);
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extern void Platform_AssertFail(LONGINT x);
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#define __HALT(x) Platform_Halt(x)
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#define __ASSERT(cond, x) if (!(cond)) Platform_AssertFail((LONGINT)(x))
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// Memory allocation
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extern SYSTEM_PTR Heap_NEWBLK (LONGINT size);
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extern SYSTEM_PTR Heap_NEWREC (LONGINT tag);
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extern SYSTEM_PTR SYSTEM_NEWARR(LONGINT*, LONGINT, int, int, int, ...);
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#define __SYSNEW(p, len) p = Heap_NEWBLK((LONGINT)(len))
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#define __NEW(p, t) p = Heap_NEWREC((LONGINT)(uintptr_t)t##__typ)
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#define __NEWARR SYSTEM_NEWARR
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/* Type handling */
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#define __TDESC(t, m, n) \
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static struct t##__desc { \
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LONGINT tproc[m]; /* Proc for each ptr field */ \
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LONGINT tag; \
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LONGINT next; /* Module table type list points here */ \
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LONGINT level; \
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LONGINT module; \
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char name[24]; \
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LONGINT basep[__MAXEXT]; /* List of bases this extends */ \
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LONGINT reserved; \
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LONGINT blksz; /* xxx_typ points here */ \
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LONGINT ptr[n+1]; /* Offsets of ptrs up to -ve sentinel */ \
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} t##__desc
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#define __BASEOFF (__MAXEXT+1) // blksz as index to base.
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#define __TPROC0OFF (__BASEOFF+24/sizeof(LONGINT)+5) // blksz as index to tproc IFF m=1.
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#define __EOM 1
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#define __TDFLDS(name, size) {__EOM}, 1, 0, 0, 0, name, {0}, 0, size
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#define __ENUMP(adr, n, P) SYSTEM_ENUMP(adr, (LONGINT)(n), P)
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#define __ENUMR(adr, typ, size, n, P) SYSTEM_ENUMR(adr, typ, (LONGINT)(size), (LONGINT)(n), P)
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#define __INITYP(t, t0, level) \
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t##__typ = (LONGINT*)&t##__desc.blksz; \
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memcpy(t##__desc.basep, t0##__typ - __BASEOFF, level*sizeof(LONGINT)); \
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t##__desc.basep[level] = (LONGINT)(uintptr_t)t##__typ; \
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t##__desc.module = (LONGINT)(uintptr_t)m; \
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if(t##__desc.blksz!=sizeof(struct t)) __HALT(-15); \
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t##__desc.blksz = (t##__desc.blksz+5*sizeof(LONGINT)-1)/(4*sizeof(LONGINT))*(4*sizeof(LONGINT)); \
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Heap_REGTYP(m, (LONGINT)(uintptr_t)&t##__desc.next); \
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SYSTEM_INHERIT(t##__typ, t0##__typ)
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#define __IS(tag, typ, level) (*(tag-(__BASEOFF-level))==(LONGINT)(uintptr_t)typ##__typ)
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#define __TYPEOF(p) ((LONGINT*)(uintptr_t)(*(((LONGINT*)(p))-1)))
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#define __ISP(p, typ, level) __IS(__TYPEOF(p),typ,level)
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// Oberon-2 type bound procedures support
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#define __INITBP(t, proc, num) *(t##__typ-(__TPROC0OFF+num))=(LONGINT)(uintptr_t)proc
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#define __SEND(typ, num, funtyp, parlist) ((funtyp)((uintptr_t)*(typ-(__TPROC0OFF+num))))parlist
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#endif
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