factor/vm/code_heap.h

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2007-09-20 18:09:08 -04:00
typedef enum {
/* arg is a primitive number */
RT_PRIMITIVE,
/* arg is a literal table index, holding an array pair (symbol/dll) */
RT_DLSYM,
/* an indirect literal from the word's literal table */
RT_LITERAL,
/* a pointer to a compiled word reference */
RT_DISPATCH,
/* a compiled word reference */
RT_XT,
/* a local label */
RT_LABEL
} F_RELTYPE;
typedef enum {
/* absolute address in a 64-bit location */
RC_ABSOLUTE_CELL,
/* absolute address in a 32-bit location */
RC_ABSOLUTE,
/* relative address in a 32-bit location */
RC_RELATIVE,
/* relative address in a PowerPC LIS/ORI sequence */
RC_ABSOLUTE_PPC_2_2,
/* relative address in a PowerPC LWZ/STW/BC instruction */
RC_RELATIVE_PPC_2,
/* relative address in a PowerPC B/BL instruction */
RC_RELATIVE_PPC_3,
/* relative address in an ARM B/BL instruction */
RC_RELATIVE_ARM_3,
/* pointer to address in an ARM LDR/STR instruction */
RC_INDIRECT_ARM,
/* pointer to address in an ARM LDR/STR instruction offset by 8 bytes */
RC_INDIRECT_ARM_PC
} F_RELCLASS;
#define REL_RELATIVE_PPC_2_MASK 0xfffc
#define REL_RELATIVE_PPC_3_MASK 0x3fffffc
#define REL_INDIRECT_ARM_MASK 0xfff
#define REL_RELATIVE_ARM_3_MASK 0xffffff
/* the rel type is built like a cell to avoid endian-specific code in
the compiler */
#define REL_TYPE(r) ((r)->type & 0x000000ff)
#define REL_CLASS(r) (((r)->type & 0x0000ff00) >> 8)
#define REL_ARGUMENT(r) (((r)->type & 0xffff0000) >> 16)
/* code relocation consists of a table of entries for each fixup */
typedef struct {
unsigned int type;
unsigned int offset;
} F_REL;
void relocate_code_block(F_COMPILED *relocating, CELL code_start,
CELL reloc_start, CELL literals_start, CELL words_start, CELL words_end);
void finalize_code_block(F_COMPILED *relocating, CELL code_start,
CELL reloc_start, CELL literals_start, CELL words_start, CELL words_end);
XT add_compiled_block(
CELL type,
F_ARRAY *code,
F_ARRAY *labels,
F_ARRAY *rel,
F_ARRAY *words,
F_ARRAY *literals);
CELL compiled_code_format(void);
DECLARE_PRIMITIVE(add_compiled_block);
DECLARE_PRIMITIVE(finalize_compile);