arm64: moving things around

[factor.git] / basis / bootstrap / assembler / arm.64.unix.factor

diff --git a/basis/bootstrap/assembler/arm.64.unix.factor b/basis/bootstrap/assembler/arm.64.unix.factor
index 635d942b658b905b57a9be527a6649fd0bdc5c80..0e4504d1523f079d5d4116564f8fd0b69fb74dee 100644 (file)
--- a/basis/bootstrap/assembler/arm.64.unix.factor
+++ b/basis/bootstrap/assembler/arm.64.unix.factor
@@ -4,57 +4,6 @@ USING: cpu.arm.assembler cpu.arm.assembler.opcodes kernel layouts
 parser sequences ;
 IN: bootstrap.arm
 
-! Stack frame
-! https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling?view=vs-2019
-
-
-! x0   Volatile        Parameter/scratch register 1, result register
-! x1-x7        Volatile        Parameter/scratch register 2-8
-! x8-x15       Volatile        Scratch registers
-! x16-x17      Volatile        Intra-procedure-call scratch registers
-! x18  Non-volatile    Platform register: in kernel mode, points to KPCR for the current processor;
-!   in user mode, points to TEB
-! x19-x28      Non-volatile    Scratch registers
-! x29/fp       Non-volatile    Frame pointer
-! x30/lr       Non-volatile    Link registers
-
-
-: stack-frame-size ( -- n ) 4 bootstrap-cells ;
-: volatile-regs ( -- seq ) { X0 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 X16 X17 } ;
-: nv-regs ( -- seq ) { X18 X19 X20 X21 X22 X23 X24 X25 X26 X27 X28 X29 X30 } ;
-
-
-! callee-save = non-volatile aka call-preserved
-
-! x30 is the link register (used to return from subroutines)
-! x29 is the frame register
-! x19 to x29 are callee-saved
-! x18 is the 'platform register', used for some operating-system-specific special purpose,
-!   or an additional caller-saved register
-! x16 and x17 are the Intra-Procedure-call scratch register
-! x9 to x15: used to hold local variables (caller saved)
-! x8: used to hold indirect return value address
-! x0 to x7: used to hold argument values passed to a subroutine, and also hold
-!   results returned from a subroutine
-
-
-! https://en.wikichip.org/wiki/arm/aarch64
-! Generally, X0 through X18 can corrupt while X19-X29 must be preserved
-! Register   Role    Requirement
-! X0 -  X7   Parameter/result registers   Can Corrupt
-! X8         Indirect result location register
-! X9 -  X15  Temporary registers
-! X16 - X17  Intra-procedure call temporary
-! X18        Platform register, otherwise temporary
-
-! X19 - X29    Callee-saved register    Must preserve
-! X30    Link Register    Can Corrupt
-
-: arg1 ( -- reg ) X0 ;
-: arg2 ( -- reg ) X1 ;
-: arg3 ( -- reg ) X2 ;
-: arg4 ( -- reg ) X3 ;
-: red-zone-size ( -- n ) 16 ;
 
 << "vocab:bootstrap/assembler/arm.unix.factor" parse-file suffix! >> call
 << "vocab:bootstrap/assembler/arm.64.factor" parse-file suffix! >> call