cpu.*: more docs

locals-and-roots
Björn Lindqvist 2016-04-22 13:00:46 +02:00
parent 00fdb837fa
commit 3177e7851c
3 changed files with 55 additions and 6 deletions

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@ -1,8 +1,7 @@
USING: alien assocs classes compiler.cfg.instructions
compiler.cfg.registers compiler.cfg.stack-frame
cpu.x86.assembler cpu.x86.assembler.operands help.markup
help.syntax kernel layouts literals math multiline system vm
words ;
compiler.cfg.registers compiler.cfg.stack-frame cpu.x86.assembler
cpu.x86.assembler.operands help.markup help.syntax kernel layouts
literals math multiline sequences strings system vm words ;
IN: cpu.architecture
<<
@ -108,6 +107,21 @@ HELP: param-regs
{ $values { "abi" "a calling convention symbol" } { "regs" assoc } }
{ $description "Retrieves the order in which machine registers are used for parameters for the given calling convention." } ;
HELP: %alien-invoke
{ $values
{ "reg-inputs" sequence }
{ "stack-inputs" sequence }
{ "reg-outputs" sequence }
{ "dead-outputs" sequence }
{ "cleanup" integer }
{ "stack-size" integer }
{ "symbols" string }
{ "dll" { $maybe dll } }
{ "gc-map" gc-map }
}
{ $description "Machine code emitter for the " { $link ##alien-invoke } " instruction." } ;
HELP: %allot
{ $values
{ "dst" "destination register symbol" }
@ -176,6 +190,13 @@ HELP: %horizontal-add-vector
}
} ;
HELP: %load-double
{ $values
{ "reg" "destination register symbol" }
{ "val" float }
} { $description "Loads a literal floating point value into a register. On x86, this corresponds to the " { $link MOVSD } " instruction." }
{ $see-also ##load-double } ;
HELP: %load-immediate
{ $values { "reg" "a register symbol" } { "val" "a value" } }
{ $description "Emits code for loading an immediate value into a register. On " { $link x86 } ", if val is 0, then an " { $link XOR } " instruction is emitted instead of " { $link MOV } " because the former is shorter." }
@ -231,6 +252,22 @@ HELP: %save-context
{ $description "Emits machine code for saving pointers to the callstack, datastack and retainstack in the current context field struct." }
{ $examples { $unchecked-example $[ ex-%save-context ] } } ;
HELP: %set-slot
{ $values
{ "src" "register containing the element" }
{ "obj" "register containing the object" }
{ "slot" "register containing the slot index" }
{ "scale" fixnum }
{ "tag" "type tag for the builtin" }
} { $description "Emits machine code for " { $link ##set-slot } " instructions." }
{ $examples
{ $unchecked-example
"USING: cpu.architecture prettyprint ;"
"[ RAX RBX RCX 3 2 %set-slot ] B{ } make disassemble"
"0000000000f1fda0: 488944cbfe mov [rbx+rcx*8-0x2], rax"
}
} ;
HELP: %store-memory-imm
{ $values
{ "value" "source register" }

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@ -1,4 +1,5 @@
USING: compiler.codegen.labels cpu.x86.assembler help.markup help.syntax ;
USING: compiler.codegen.labels cpu.x86.assembler.private help.markup
help.syntax ;
IN: cpu.x86.assembler
HELP: JE
@ -11,3 +12,15 @@ HELP: JE
"000000e9fcc71fe0: 0f8400000000 jz dword 0xe9fcc71fe6"
}
} ;
HELP: MOV
{ $values { "dst" "destination" "src" "source" } }
{ $description "Moves a value from one place to another." } ;
HELP: (MOV-I)
{ $values { "dst" "destination" "src" "immediate value" } }
{ $description "MOV where the src is immediate." } ;
ARTICLE: "cpu.x86.assembler" "x86 assembler" "This vocab implements an assembler for x86 architectures." ;
ABOUT: "cpu.x86.assembler"

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@ -210,7 +210,6 @@ GENERIC: POP ( op -- )
M: register POP f 0x58 short-operand ;
M: operand POP { 0b000 f 0x8f } 1-operand ;
! MOV where the src is immediate.
<PRIVATE
GENERIC# (MOV-I) 1 ( dst src -- )