From ce05175372a9ddca1a225db0765ace1127a39293 Mon Sep 17 00:00:00 2001
From: Nicholas <nbnoll@eml.cc>
Date: Fri, 12 Nov 2021 09:22:01 -0800
Subject: chore: simplified organizational structure

---
 sys/base/coro/unix_x64.s | 113 -----------------------------------------------
 1 file changed, 113 deletions(-)
 delete mode 100644 sys/base/coro/unix_x64.s

(limited to 'sys/base/coro/unix_x64.s')

diff --git a/sys/base/coro/unix_x64.s b/sys/base/coro/unix_x64.s
deleted file mode 100644
index d7de2a2..0000000
--- a/sys/base/coro/unix_x64.s
+++ /dev/null
@@ -1,113 +0,0 @@
-; Nicholas Noll 2019
-;
-; ===================================================================
-%use altreg
-
-    bits 64
-    default rel
-    global _newcoro
-    global _coroyield
-
-; ===================================================================
-    section .text
-; -------------------------------------------------------------------
-
-%assign L.coro  -8
-%assign L.func  -16
-
-coroinit:
-    mov     R7, [RBP + L.coro]
-    mov     R6, R0 
-    call    [RBP + L.func]
-
-rerun:
-    mov     R7, [RBP + L.coro]
-    mov     R6, R0
-    call    _coroyield
-    jmp     rerun
-
-; -------------------------------------------------------------------
-; # Register Mapping
-; 
-; R0   R1   R2   R3   R4   R5   R6   R7   R8  ...
-; RAX  RCX  RDX  RBX  RSP  RBP  RSI  RDI  R8  ...
-; 
-; # Sys V calling convention
-; func(R7, R6, R2, R1, R8, R9, Z0-7): R0
-;
-; # Stack layout of an in-flight coro
-; *coro
-; *func
-; *bp (base pointer of stack)
-; ....... STACK .........
-; Saved Clobbers
-;
-; ###
-; Stack layout of an init coro
-; Stores the func pointer to init 
-; Stores the clobber registers.
-;
-; L.coro        [8] 
-; L.func        [7]
-; coroinit      [6]
-; RBP           [5]
-; R3            [4]
-; R12           [3]
-; R13           [2]
-; R14           [1]
-; R15           [0]
-
-%define WORDSZ 8
-%define NSAVES 9 
-
-; coro *coro·new(co *coro, fn func, bp *stack)
-_newcoro:
-    lea     R0, [coroinit]              ; Store address of init function
-    lea     R1, [R2 - NSAVES*WORDSZ]    ; Store offset address of stack
-    
-    mov     [R1 + 8*WORDSZ], R7         ; Store context pointer
-    mov     [R1 + 7*WORDSZ], R6         ; Store function pointer
-    mov     [R1 + 6*WORDSZ], R0         ; Store initializer pointer
-    mov     [R1 + 5*WORDSZ], R2         ; Store stack base pointer
-
-    xor     R0, R0
-
-    ; Start of mutable stack
-    ; Blank out the clobbers
-    mov     [R1 + 4*WORDSZ], R0 ; R3
-    mov     [R1 + 3*WORDSZ], R0 ; R12
-    mov     [R1 + 2*WORDSZ], R0 ; R13
-    mov     [R1 + 1*WORDSZ], R0 ; R14
-    mov     [R1 + 0*WORDSZ], R0 ; R15
-
-    mov     [R7], R1
-    ret
-
-; Saves register state
-%macro pushclobs 0
-    push     RBP
-    push     R3
-    push     R12
-    push     R13
-    push     R14
-    push     R15
-%endmacro
-
-; Restores register state
-%macro popclobs 0
-    pop      R15
-    pop      R14
-    pop      R13
-    pop      R12
-    pop      R3
-    pop      RBP
-%endmacro
-
-; uintptr coro.yield(co *coro, data uintptr)
-_coroyield:
-    pushclobs
-    mov     R0, R6      ; Move return value into return register.
-    xchg    RSP, [R7]   ; Atomically swap the stack pointer with the yieldee. 
-    popclobs
-
-    ret
-- 
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