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WIP: make variable types in simulate_unbind match OP_unbind #381

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WIP: make variable types in simulate_unbind match OP_unbind #381

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68d4a61
WIP: make variable types in simulate_unbind match OP_unbind
masinter May 15, 2021
c0850dd
WIP still; now it looks like inlineC.h but it still fails
masinter May 15, 2021
d625665
WIP still, trying for a fix
masinter May 24, 2021
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2 changes: 1 addition & 1 deletion bin/makefile-linux.x86_64-x
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Expand Up @@ -17,7 +17,7 @@ XFILES = $(OBJECTDIR)xmkicon.o \
XFLAGS = -DXWINDOW

# OPTFLAGS is normally -O2.
OPTFLAGS = -O2 -g3
OPTFLAGS = -O0 -g3
DFLAGS = $(XFLAGS) -DRELEASE=351

LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
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8 changes: 4 additions & 4 deletions inc/stack.h
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Expand Up @@ -78,7 +78,7 @@ typedef struct fnhead {
typedef struct frameex1 {
unsigned flags : 3;
unsigned fast : 1;
unsigned nil2 : 1; /* not used, prev: This frame treats N-func */
unsigned mvscase : 1; /* was not used, prev: This frame treats N-func */
unsigned incall : 1;
unsigned validnametable : 1;
/* 0: look for FunctionHeader
Expand Down Expand Up @@ -109,7 +109,7 @@ typedef struct frameex1 {
typedef struct frameex2 {
unsigned flags : 3;
unsigned fast : 1;
unsigned nil2 : 1; /* not used, prev: This frame treats N-func */
unsigned mvscase : 1; /* not used, prev: This frame treats N-func */
unsigned incall : 1;
unsigned validnametable : 1;
/* 0: look for FunctionHeader
Expand Down Expand Up @@ -200,7 +200,7 @@ typedef struct frameex1 {
/* 0: look for FunctionHeader
1: look for NameTable on this FrameEx */
unsigned incall : 1;
unsigned nil2 : 1; /* not used, prev: This frame treats N-func */
unsigned mvscase : 1; /* not used, prev: This frame treats N-func */
unsigned fast : 1;
unsigned flags : 3; /* hi word */

Expand Down Expand Up @@ -235,7 +235,7 @@ typedef struct frameex2 {
/* 0: look for FunctionHeader
1: look for NameTable on this FrameEx */
unsigned incall : 1;
unsigned nil2 : 1; /* not used, prev: This frame treats N-func */
unsigned mvscase : 1; /* not used, prev: This frame treats N-func */
unsigned fast : 1;
unsigned flags : 3;

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9 changes: 7 additions & 2 deletions src/hardrtn.c
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Expand Up @@ -211,8 +211,13 @@ int slowreturn(void) {
} else {
if (CURRENTFX->nopush) {
CURRENTFX->nopush = NIL;
CurrentStackPTR = next68k - 2;
TopOfStack = *((LispPTR *)CurrentStackPTR);
if (CURRENTFX->mvscase) {
CurrentStackPTR = next68k;
CURRENTFX->mvscase = NIL;
} else {
CurrentStackPTR = next68k - 2;
TopOfStack = *((LispPTR *)CurrentStackPTR);
}
CurrentStackPTR -= 2;

} else
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43 changes: 23 additions & 20 deletions src/mvs.c
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Expand Up @@ -69,6 +69,8 @@ LispPTR values(int arg_count, register LispPTR *args) {
fnhead = (struct fnhead *)FuncObj;
pc = (ByteCode *)PC + 3; /* to skip the miscn opcode we're in now */
} else {
unbind_count = 0; /* different frame */

fnhead = (struct fnhead *)Addr68k_from_LADDR(POINTERMASK & SWA_FNHEAD((int)caller->fnheader));
pc = (ByteCode *)fnhead + (caller->pc);
}
Expand Down Expand Up @@ -98,9 +100,14 @@ LispPTR values(int arg_count, register LispPTR *args) {
/* BUT 3's not enough for big atoms, so add diff between FN op size & MISCN op size */
if (caller == immediate_caller) PC = pc + (FN_OPCODE_SIZE - 3);
#endif /* BIGATOMS */

else
else {
caller->pc = (UNSIGNED)pc + FN_OPCODE_SIZE - (UNSIGNED)fnhead;
/* skip over FN opcode when we get there */
prevcaller->fast = 0;
caller->mvscase = 1;
caller->nopush = 1;
}

return (make_value_list(arg_count, args));
}
break;
Expand Down Expand Up @@ -271,26 +278,22 @@ LispPTR make_value_list(int argcount, LispPTR *argarray) {

void simulate_unbind(FX2 *frame, int unbind_count, FX2 *returner) {
int unbind;
LispPTR *stackptr = (LispPTR *)(Stackspace + frame->nextblock);
LispPTR *stack_pointer = (LispPTR *)(Stackspace + frame->nextblock);
for (unbind = 0; unbind < unbind_count; unbind++) {
register int value;
register LispPTR *lastpvar;
int bindnvalues;
for (; ((int)*--stackptr >= 0);)
; /* find the binding mark */
value = (int)*stackptr;
lastpvar = (LispPTR *)((DLword *)frame + FRAMESIZE + 2 + GetLoWord(value));
;
bindnvalues = (~value) >> 16;
for (value = bindnvalues; --value >= 0;) { *--lastpvar = 0xffffffff; }
/* This line caused \NSMAIL.READ.HEADING to smash memory, */
/* so I removed it 21 Jul 91 --JDS. This was the only */
/* difference between this function and the UNWIND code */
/* in inlineC.h */
/* MAKEFREEBLOCK(stackptr, (DLword *)stackptr-nextblock); */
register int num;
register LispPTR *ppvar;
register int i;
register LispPTR value;

for (; (((int)*--(stack_pointer)) >= 0);)
;
value = *stack_pointer;
num = (~value) >> 16;
ppvar = (LispPTR *)((DLword *)frame + FRAMESIZE + 2 + GetLoWord(value));
for (i = num; --i >= 0;) { *--ppvar = 0xffffffff; }
}
if (returner)
returner->fast = 0; /* since we've destroyed contiguity */
/* if (returner)
returner->fast = 0; since we've destroyed contiguity */
/* in the stack, but that only
matters if there's a return. */
}