93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
namespace factor
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{
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enum relocation_type {
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/* arg is a primitive number */
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RT_PRIMITIVE,
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/* arg is a literal table index, holding an array pair (symbol/dll) */
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RT_DLSYM,
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/* a pointer to a compiled word reference */
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RT_DISPATCH,
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/* a word's general entry point XT */
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RT_XT,
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/* a word's direct entry point XT */
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RT_XT_DIRECT,
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/* current offset */
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RT_HERE,
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/* current code block */
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RT_THIS,
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/* immediate literal */
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RT_IMMEDIATE,
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/* address of stack_chain var */
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RT_STACK_CHAIN,
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/* untagged fixnum literal */
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RT_UNTAGGED,
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};
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enum relocation_class {
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/* absolute address in a 64-bit location */
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RC_ABSOLUTE_CELL,
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/* absolute address in a 32-bit location */
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RC_ABSOLUTE,
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/* relative address in a 32-bit location */
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RC_RELATIVE,
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/* relative address in a PowerPC LIS/ORI sequence */
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RC_ABSOLUTE_PPC_2_2,
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/* relative address in a PowerPC LWZ/STW/BC instruction */
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RC_RELATIVE_PPC_2,
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/* relative address in a PowerPC B/BL instruction */
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RC_RELATIVE_PPC_3,
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/* relative address in an ARM B/BL instruction */
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RC_RELATIVE_ARM_3,
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/* pointer to address in an ARM LDR/STR instruction */
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RC_INDIRECT_ARM,
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/* pointer to address in an ARM LDR/STR instruction offset by 8 bytes */
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RC_INDIRECT_ARM_PC
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};
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#define REL_RELATIVE_PPC_2_MASK 0xfffc
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#define REL_RELATIVE_PPC_3_MASK 0x3fffffc
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#define REL_INDIRECT_ARM_MASK 0xfff
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#define REL_RELATIVE_ARM_3_MASK 0xffffff
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/* code relocation table consists of a table of entries for each fixup */
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typedef u32 relocation_entry;
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#define REL_TYPE(r) (relocation_type)(((r) & 0xf0000000) >> 28)
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#define REL_CLASS(r) (relocation_class)(((r) & 0x0f000000) >> 24)
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#define REL_OFFSET(r) ((r) & 0x00ffffff)
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void flush_icache_for(code_block *compiled);
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typedef void (*relocation_iterator)(relocation_entry rel, cell index, code_block *compiled);
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void iterate_relocations(code_block *compiled, relocation_iterator iter);
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void store_address_in_code_block(cell klass, cell offset, fixnum absolute_value);
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void relocate_code_block(code_block *compiled);
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void update_literal_references(code_block *compiled);
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void copy_literal_references(code_block *compiled);
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void update_word_references(code_block *compiled);
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void update_literal_and_word_references(code_block *compiled);
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void mark_code_block(code_block *compiled);
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void mark_active_blocks(context *stacks);
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void mark_object_code_block(object *scan);
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void relocate_code_block(code_block *relocating);
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inline static bool stack_traces_p()
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{
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return userenv[STACK_TRACES_ENV] != F;
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}
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code_block *add_code_block(cell type, cell code, cell labels, cell relocation, cell literals);
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}
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