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|
<
<
# read absolute address
# 0 -> address to read
# 0 <- byte read
[[
/rbx :popqReg
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
/rcx :popqReg
/rax :pushqReg
8 /rcx /rcx :movqMemDisp8Reg
/rcx /rcx :movzxMem8Reg64
/rcx 8 /rax :movqRegMemDisp8
/rbx :pushqReg
:retn
]] /eypeek defv
# write absolute address
# 0 -> address to write
# 1 -> value to write
[[
/rbx :popqReg
/rax :popqReg
8 /rax /rax :movqMemDisp8Reg
/rcx :popqReg
8 /rcx /rcx :movqMemDisp8Reg
/cl /rax :movbRegMem
/rbx :pushqReg
:retn
]] /eypoke defv
# call absolute address
# 0 -> address to call
[[
/rbx :popqReg
/rax :popqReg
8 /rax /rax :movqMemDisp8Reg
/rax :callqReg
/rbx :pushqReg
:retn
]] /eyexecute defv
# conduct a syscall
# 0 -> syscall number, rax before entry
# 1 -> r9 before entry
# 2 -> r8 before entry
# 3 -> r10 before entry
# 4 -> rdx before entry
# 5 -> rsi before entry
# 6 -> rdi before entry
# 0 <- rdx after syscall
# 1 <- rax after syscall
[[
8 /r15 :subqImm8Reg
/r15 :popqMem
2 {
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
8 /r15 :subqImm8Reg
/rax /r15 :movqRegMem
} rep # allocate return integers
[ /rax /r9 /r8 /r10 /rdx /rsi /rdi ] { ==reg
reg :popqReg
7 reg /bl :movbMemDisp8Reg
%F0 /bl :andbImmReg
/intLoad reg cat :jzLbl8
%10 /bl :cmpbImmReg
/stringLoad reg cat :jeLbl8
"neither int nor string argument in sys .asm .syscall" ::outputError
:ud2
/stringLoad reg cat :label
24 reg reg :leaqMemDisp8Reg
/doneLoad reg cat :jmpLbl8
/intLoad reg cat :label
8 reg reg :movqMemDisp8Reg
/doneLoad reg cat :label
} each
:syscall
/r15 /rcx :movqMemReg
/rax 8 /rcx :movqRegMemDisp8
/rcx :pushqReg
8 /r15 :addqImm8Reg
/r15 /rcx :movqMemReg
/rdx 8 /rcx :movqRegMemDisp8
/rcx :pushqReg
8 /r15 :addqImm8Reg
/r15 :pushqMem
8 /r15 :addqImm8Reg
:retn
]] /eysyscall defv
# returns the number of allocations in the global allocation list
# 0 <- number of allocations registered
[[
/rbx :popqReg
# allocate return integer
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
/rax :pushqReg
::globalAllocationList /rdx :movqImmReg
/rdx /rdx :movqMemReg
/rdx /rdx :movqMemReg
4 /rdx :shrqImm8Reg
/rdx :decqReg
/rdx 8 /rax :movqRegMemDisp8
/rbx :pushqReg
:retn
]] /eyglobalAllocCount defv
# returns the base address of a global allocation
# 0 -> number of allocation
# 0 <- allocation base address
[[
/rbx :popqReg
# allocate return integer
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
/rcx :popqReg
/rax :pushqReg
8 /rcx /rcx :movqMemDisp8Reg
::globalAllocationList /rdx :movqImmReg
/rdx /rdx :movqMemReg
/rcx :incqReg
4 /rcx :shlqImm8Reg
/rcx /rdx /rdx :movqMemIndexReg
/rdx 8 /rax :movqRegMemDisp8
/rbx :pushqReg
:retn
]] /eyglobalAllocBase defv
# returns the size of a global allocation
# 0 -> number of allocation
# 0 <- allocation size
[[
/rbx :popqReg
# allocate return integer
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
/rcx :popqReg
/rax :pushqReg
8 /rcx /rcx :movqMemDisp8Reg
::globalAllocationList /rdx :movqImmReg
/rdx /rdx :movqMemReg
/rcx :incqReg
4 /rcx :shlqImm8Reg
8 1 /rcx /rdx /rdx :movqMemIndexScaleDisp8Reg
/rdx 8 /rax :movqRegMemDisp8
/rbx :pushqReg
:retn
]] /eyglobalAllocSize defv
# get raw object address from object
# 0 -> object
# 0 <- address of the object
[[
/rbx :popqReg
# allocate return integer
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
8 /rax :popqMemDisp8
/rax :pushqReg
/rbx :pushqReg
:retn
]] /eyrawAddress defv
# generate object from raw object
# 0 -> address of the object
# 0 <- object
[[
/rbx :popqReg
/rax :popqReg
8 /rax :pushqMemDisp8 # push integer value
/rbx :pushqReg
:retn
]] /eyrawObject defv
# get raw code execution address from function object
# 0 -> function object
# 0 <- address of first instruction
[[
/rbx :popqReg
# allocate return integer
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
/rdx :popqReg
24 /rdx /rdx :movqMemDisp8Reg
8 /rdx :addqImm8Reg
/rdx 8 /rax :movqRegMemDisp8
/rax :pushqReg
/rbx :pushqReg
:retn
]] /eyrawCodeAddress defv
# (template) program boot sequence after freeze
[[
/rsp :movqImmOOBReg %EE %EE %EE %EE %EE %EE %EE %EE # 10
/r15 :movqImmOOBReg %EE %EE %EE %EE %EE %EE %EE %EE # 20
::heapEnd /rax :movqImmReg # 30
/rbx :movqImmOOBReg %EE %EE %EE %EE %EE %EE %EE %EE # 40
/rbx /rax :movqRegMem # 43
::unusedHeapStart /rax :movqImmReg # 53
/rbx :movqImmOOBReg %EE %EE %EE %EE %EE %EE %EE %EE # 63
/rbx /rax :movqRegMem # 66
::currentScope /rax :movqImmReg # 76
/rbx :movqImmOOBReg %EE %EE %EE %EE %EE %EE %EE %EE # 86
/rbx /rax :movqRegMem # 89
:globalAllocations .base /rax :movqImmReg # 99
/rbx :movqImmOOBReg %EE %EE %EE %EE %EE %EE %EE %EE # 109
/rbx /rax :movqRegMem # 112
# empty encoding buffer to ensure the GC does not follow residue from freeze into unallocated memory
:quoteEncodingBuffer /rdi :movqImmReg
:STACKSIZE 8 sub /rcx :movqImmReg
3 /rcx :shrqImm8Reg
/rax /rax :xorqRegReg
:reprcx :stosq
|ey* /rax :movqImmReg
/rax :callqReg
:ud2
]] /eyprogramStart defv
> _ ==globalFunctions { defv }' ::allocateOffsetStruct
<
# patch programStart to current program state
# this function must be called first in sys .freeze because it has to unwind the exactly
# correct number of things from the stack to make the sys .freeze execution transparent
# TODO: actually do this (e.g. by recoding the freeze startup in assembly)
# TODO: ... for now just flush the call stack on freeze
# returns the number of allocations according to frozen alloc list fill state
[[
/rbx :popqReg
eyprogramStart /rax :movqImmReg
/rsp 2 /rax :movqRegMemDisp8
# /r15 12 /rax :movqRegMemDisp8 # TODO: something like this (but correctly adjusted) would be right
:mainCallStack .base :STACKSIZE add /rdx :movqImmReg # TODO whereas this just flushes the stack
/rdx 12 /rax :movqRegMemDisp8
::heapEnd /rdx :movqImmReg
/rdx /rdx :movqMemReg
/rdx 32 /rax :movqRegMemDisp8
::unusedHeapStart /rdx :movqImmReg
/rdx /rdx :movqMemReg
/rdx 55 /rax :movqRegMemDisp8
::currentScope /rdx :movqImmReg
/rdx /rdx :movqMemReg
16 /rdx /rdx :movqMemDisp8Reg # unwind one scope
/rdx 78 /rax :movqRegMemDisp8
:globalAllocations .base /rdx :movqImmReg
/rdx /rdx :movqMemReg
/rdx :pushqReg # store allocation count for later return value
/rdx 101 /rax :movqRegMemDisp8
::internalAllocateInteger /rax :movqImmReg
/rax :callqReg
# type zero does not need to be changed
/rdx :popqReg
4 /rdx :shrqImm8Reg
/rdx :decqReg
/rdx 8 /rax :movqRegMemDisp8 # store value
/rax :pushqReg
/rbx :pushqReg
:retn
]] /eypatchProgramStart defv
> _ ==globalFunctions2 { defv }' ::allocateOffsetStruct
"asm" enterSubScope
[
globalFunctions keys eydeff { | }' createScopeEntries
globalFunctions2 keys eydeff { | }' createScopeEntries
createScopeExtensionEntries
] :execute
leaveSubScope
> --
# vim: syn=elymas
|
