From: Alan Cox <alan@linux.intel.com>
Date: Fri, 6 Apr 2018 18:36:46 +0000 (+0100)
Subject: z80: allow fixedbank to used swapless
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=7218358b58107b054269c9ae4770443f9bc4cd74;p=FUZIX.git

z80: allow fixedbank to used swapless
---

diff --git a/Kernel/lib/z80fixedbank.s b/Kernel/lib/z80fixedbank.s
index e39369c9..03705f2d 100644
--- a/Kernel/lib/z80fixedbank.s
+++ b/Kernel/lib/z80fixedbank.s
@@ -21,7 +21,6 @@
         .globl _runticks
         .globl unix_syscall_entry
         .globl interrupt_handler
-	.globl _swapper
 	.globl _need_resched
 	.globl _nready
 	.globl _platform_idle
@@ -93,6 +92,8 @@ _switchin:
 	add hl, de	; process ptr
 	pop de
 
+.ifne CONFIG_SWAP
+	.globl _swapper
 	;
 	;	Always use the swapstack, otherwise when we call map_kernel
 	;	having copied the udata stash back to udata we will crap
@@ -124,7 +125,7 @@ _switchin:
 	pop de
 	pop hl
 	di
-
+.endif
 	ld a, (hl)
 not_swapped:
 	ld hl, (U_DATA__U_PTAB)
diff --git a/Kernel/platform-mtx/kernel.def b/Kernel/platform-mtx/kernel.def
index 4810f868..92367f44 100644
--- a/Kernel/platform-mtx/kernel.def
+++ b/Kernel/platform-mtx/kernel.def
@@ -13,3 +13,5 @@ Z80_TYPE		    .equ 0
 VRAM_CH			    .equ 3	      ; font data 0x1800-1BFF ?
 
 Z80_MMU_HOOKS		    .equ 0
+
+CONFIG_SWAP		    .equ 1
diff --git a/Kernel/platform-trs80/kernel.def b/Kernel/platform-trs80/kernel.def
index d1803954..9e704d69 100644
--- a/Kernel/platform-trs80/kernel.def
+++ b/Kernel/platform-trs80/kernel.def
@@ -13,3 +13,5 @@ Z80_TYPE		    .equ 1
 NBUFS			    .equ 10
 
 Z80_MMU_HOOKS		    .equ 0
+
+CONFIG_SWAP		    .equ 1
diff --git a/Kernel/platform-ubee/kernel.def b/Kernel/platform-ubee/kernel.def
index 1211ad48..86bb8dbd 100644
--- a/Kernel/platform-ubee/kernel.def
+++ b/Kernel/platform-ubee/kernel.def
@@ -11,3 +11,5 @@ PROGLOAD		    .equ 0x0100
 Z80_TYPE		    .equ 0
 
 Z80_MMU_HOOKS		    .equ 0
+
+CONFIG_SWAP		    .equ 1