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Fix code heap compaction bug introduced recently

release
Slava Pestov 2007-11-17 04:31:26 -05:00
parent 424ced9e2d
commit f05f919973
5 changed files with 32 additions and 51 deletions
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15
vm/code_gc.c Normal file → Executable file
View File

@ -379,6 +379,8 @@ CELL compute_heap_forwarding(F_HEAP *heap)
scan->forwarding = (F_BLOCK *)address;
address += scan->size;
}
else if(scan->status == B_MARKED)
critical_error("Why is the block marked?",0);
scan = next_block(heap,scan);
}
@ -391,6 +393,14 @@ F_COMPILED *forward_xt(F_COMPILED *compiled)
return block_to_compiled(compiled_to_block(compiled)->forwarding);
}
void forward_frame_xt(F_STACK_FRAME *frame)
{
CELL offset = (CELL)FRAME_RETURN_ADDRESS(frame) - (CELL)frame_code(frame);
F_COMPILED *forwarded = forward_xt(frame_code(frame));
frame->xt = (XT)(forwarded + 1);
FRAME_RETURN_ADDRESS(frame) = (XT)((CELL)forwarded + offset);
}
void forward_object_xts(void)
{
begin_scan();
@ -413,6 +423,11 @@ void forward_object_xts(void)
if(quot->compiledp != F)
set_quot_xt(quot,forward_xt(quot->code));
}
else if(type_of(obj) == CALLSTACK_TYPE)
{
F_CALLSTACK *stack = untag_object(obj);
iterate_callstack_object(stack,forward_frame_xt);
}
}
/* End the heap scan */

17
vm/cpu-arm.h
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@ -5,23 +5,6 @@ register CELL rs asm("r6");
#define F_FASTCALL
typedef struct
{
/* In compiled quotation frames, position within the array.
In compiled word frames, unused. */
CELL scan;
/* In compiled quotation frames, the quot->array slot.
In compiled word frames, unused. */
CELL array;
/* In all compiled frames, the XT on entry. */
XT xt;
/* Frame size in bytes */
CELL size;
} F_STACK_FRAME;
#define FRAME_RETURN_ADDRESS(frame) *(XT *)(frame_successor(frame) + 1)
void c_to_factor(CELL quot);

17
vm/cpu-ppc.h
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@ -1,20 +1,3 @@
typedef struct
{
/* In compiled quotation frames, position within the array.
In compiled word frames, unused. */
CELL scan;
/* In compiled quotation frames, the quot->array slot.
In compiled word frames, unused. */
CELL array;
/* In all compiled frames, the XT on entry. */
XT xt;
/* Frame size in bytes */
CELL size;
} F_STACK_FRAME;
#define FACTOR_CPU_STRING "ppc"
#define F_FASTCALL

17
vm/cpu-x86.h
View File

@ -1,22 +1,5 @@
#define FRAME_RETURN_ADDRESS(frame) *(XT *)(frame_successor(frame) + 1)
typedef struct
{
/* In compiled quotation frames, position within the array.
In compiled word frames, unused. */
CELL scan;
/* In compiled quotation frames, the quot->array slot.
In compiled word frames, unused. */
CELL array;
/* In all compiled frames, the XT on entry. */
XT xt;
/* Frame size in bytes */
CELL size;
} F_STACK_FRAME;
INLINE void flush_icache(CELL start, CELL len) {}
F_FASTCALL void c_to_factor(CELL quot);

17
vm/layouts.h
View File

@ -255,3 +255,20 @@ typedef struct {
/* tagged */
CELL length;
} F_CALLSTACK;
typedef struct
{
/* In compiled quotation frames, position within the array.
In compiled word frames, unused. */
CELL scan;
/* In compiled quotation frames, the quot->array slot.
In compiled word frames, unused. */
CELL array;
/* In all compiled frames, the XT on entry. */
XT xt;
/* Frame size in bytes */
CELL size;
} F_STACK_FRAME;