113 lines
4.6 KiB
Factor
113 lines
4.6 KiB
Factor
USING: alien byte-arrays compiler.cfg compiler.cfg.instructions
|
|
compiler.codegen.labels compiler.codegen.relocation cpu.architecture hashtables
|
|
help.markup help.syntax literals make multiline sequences ;
|
|
IN: compiler.codegen
|
|
|
|
<<
|
|
STRING: generate-ex
|
|
USING: compiler.cfg.debugger io prettyprint ;
|
|
[ "hello\n" write ] test-regs first dup cfg set generate [ . ] [ 4 swap nth disassemble ] bi
|
|
;
|
|
|
|
STRING: generate-ex-answer
|
|
{
|
|
{ }
|
|
{ "hello\n" output-stream assoc-stack stream-write }
|
|
B{
|
|
6 0 0 242 24 0 0 96 49 0 0 96 58 0 0 34 64 0 0 242 80 0
|
|
0 50
|
|
}
|
|
{ }
|
|
B{
|
|
137 5 0 0 0 0 72 131 236 8 73 131 198 24 72 185 0 0 0 0
|
|
0 0 0 0 73 137 78 240 73 139 77 0 72 139 73 64 73 137 14
|
|
72 185 0 0 0 0 0 0 0 0 73 137 78 248 232 0 0 0 0 137 5 0
|
|
0 0 0 72 131 196 8 72 141 29 5 0 0 0 233 0 0 0 0 0 0 0 0
|
|
0 0 0 0 0 0 0 0 0 0 0 0
|
|
}
|
|
16
|
|
}
|
|
0000000001cc4ca0: 890500000000 mov [rip], eax
|
|
0000000001cc4ca6: 4883ec08 sub rsp, 0x8
|
|
0000000001cc4caa: 4983c618 add r14, 0x18
|
|
0000000001cc4cae: 48b90000000000000000 mov rcx, 0x0
|
|
0000000001cc4cb8: 49894ef0 mov [r14-0x10], rcx
|
|
0000000001cc4cbc: 498b4d00 mov rcx, [r13]
|
|
0000000001cc4cc0: 488b4940 mov rcx, [rcx+0x40]
|
|
0000000001cc4cc4: 49890e mov [r14], rcx
|
|
0000000001cc4cc7: 48b90000000000000000 mov rcx, 0x0
|
|
0000000001cc4cd1: 49894ef8 mov [r14-0x8], rcx
|
|
0000000001cc4cd5: e800000000 call 0x1cc4cda
|
|
0000000001cc4cda: 890500000000 mov [rip], eax
|
|
0000000001cc4ce0: 4883c408 add rsp, 0x8
|
|
0000000001cc4ce4: 488d1d05000000 lea rbx, [rip+0x5]
|
|
0000000001cc4ceb: e900000000 jmp 0x1cc4cf0
|
|
0000000001cc4cf0: 0000 add [rax], al
|
|
0000000001cc4cf2: 0000 add [rax], al
|
|
0000000001cc4cf4: 0000 add [rax], al
|
|
0000000001cc4cf6: 0000 add [rax], al
|
|
0000000001cc4cf8: 0000 add [rax], al
|
|
0000000001cc4cfa: 0000 add [rax], al
|
|
0000000001cc4cfc: 0000 add [rax], al
|
|
0000000001cc4cfe: 0000 add [rax], al
|
|
;
|
|
>>
|
|
|
|
HELP: emit-branch
|
|
{ $values { "bb" basic-block } { "successor" basic-block } }
|
|
{ $description "Emits a branching instruction for jumping from one block to the next. If the blocks are next to each other, then no jump is needed." }
|
|
{ $see-also %jump-label } ;
|
|
|
|
HELP: generate
|
|
{ $values { "cfg" cfg } { "code" sequence } }
|
|
{ $description "Generates assembly code for the given cfg. The output " { $link sequence } " has six items with the following interpretations:"
|
|
{ $list
|
|
{ "The first element is a sequence of alien function symbols and " { $link dll } "s used by the cfg interleaved. That is, the " { $link parameter-table } "." }
|
|
{ "The second item is the " { $link literal-table } "." }
|
|
{ "The third item is the relocation table as a " { $link byte-array } "." }
|
|
{ "The fourth item is the " { $link label-table } "." }
|
|
{ "The fifth item is the generated assembly code as a " { $link byte-array } ". It still contains unresolved crossreferences." }
|
|
"The sixth item is the size of the stack frame in bytes."
|
|
}
|
|
}
|
|
{ $examples
|
|
"A small quotation is compiled and then disassembled:"
|
|
{ $unchecked-example $[ generate-ex generate-ex-answer ] }
|
|
} ;
|
|
|
|
HELP: generate-insn
|
|
{ $values { "insn" insn } }
|
|
{ $description "Generates assembler code for one cfg instruction." }
|
|
{ $see-also generate } ;
|
|
|
|
HELP: generate-block
|
|
{ $values { "bb" basic-block } }
|
|
{ $description "Emits machine code to the current " { $link make } " sequence for one basic block." } ;
|
|
|
|
|
|
HELP: labels
|
|
{ $description { $link hashtable } " of mappings from " { $link basic-block } " to " { $link label } "." } ;
|
|
|
|
HELP: lookup-label
|
|
{ $values { "bb" basic-block } { "label" label } }
|
|
{ $description "Sets and gets a " { $link label } " for the " { $link basic-block } ". The labels are used to generate branch instructions from one block to another." } ;
|
|
|
|
HELP: useless-branch?
|
|
{ $values
|
|
{ "bb" basic-block }
|
|
{ "successor" "The successor block of bb" }
|
|
{ "?" "A boolean value" }
|
|
}
|
|
{ $description "If successor immediately follows bb in the linearization order, then a branch is is not needed." } ;
|
|
|
|
HELP: init-fixup
|
|
{ $description "Initializes variables needed for fixup." } ;
|
|
|
|
HELP: check-fixup
|
|
{ $values { "seq" "a " { $link sequence } " of generated machine code." } }
|
|
{ $description "Used by " { $link with-fixup } " to ensure that the generated machine code is properly aligned." } ;
|
|
|
|
ARTICLE: "compiler.codegen" "Code generation from MR (machine representation)" "Code generators for cfg instructions." ;
|
|
|
|
ABOUT: "compiler.codegen"
|