From: Alan Cox <alan@linux.intel.com>
Date: Sat, 6 Oct 2018 21:15:27 +0000 (+0100)
Subject: kernel: add other needed map_buffers instances
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=d63e9f167a0406f5800035196f453531a54b57fb;p=FUZIX.git

kernel: add other needed map_buffers instances

As we add it to more stuff it may be more generally needed. For the moment
get the cases that matter
---

diff --git a/Kernel/cpu-z180/z180.s b/Kernel/cpu-z180/z180.s
index 52ad7720..790bb657 100644
--- a/Kernel/cpu-z180/z180.s
+++ b/Kernel/cpu-z180/z180.s
@@ -28,6 +28,7 @@
         .globl _switchin
         .globl _platform_switchout
         .globl _dofork
+	.globl map_buffers
         .globl map_kernel
         .globl map_process_always
         .globl map_kernel_di
@@ -773,6 +774,7 @@ switchinfail:
         call outstring
         jp _platform_monitor
 
+map_buffers:
 map_kernel_di:
 map_kernel: ; map the kernel into the low 60K, leaves common memory unchanged
         push af
diff --git a/Kernel/platform-genie-eg64/trs80-bank.s b/Kernel/platform-genie-eg64/trs80-bank.s
index a788d93f..4edbf40e 100644
--- a/Kernel/platform-genie-eg64/trs80-bank.s
+++ b/Kernel/platform-genie-eg64/trs80-bank.s
@@ -9,6 +9,7 @@
 	.globl map_kernel
 	.globl map_kernel_di
 	.globl map_kernel_restore
+	.globl map_buffers
 	.globl map_process
 	.globl map_process_di
 	.globl map_process_always
@@ -76,6 +77,7 @@ init_hardware:
 ;	mark the low 16K R/O to protect it from user but then need to
 ;	flip r/w on syscall and irq entry/exit.. FIXME.
 ;
+map_buffers:
 map_kernel:
 map_kernel_di:
 map_kernel_restore:
diff --git a/Kernel/platform-pcw8256/pcw8256.s b/Kernel/platform-pcw8256/pcw8256.s
index 16cd75a6..f13418f8 100644
--- a/Kernel/platform-pcw8256/pcw8256.s
+++ b/Kernel/platform-pcw8256/pcw8256.s
@@ -8,6 +8,7 @@
             .globl init_early
             .globl init_hardware
             .globl _program_vectors
+	    .globl map_buffers
 	    .globl map_kernel
 	    .globl map_process
 	    .globl map_process_always
@@ -171,11 +172,13 @@ _program_vectors:
 ;
 ;	map_kernel		-	map in the kernel, trashes nothing
 ;	map_process_always	-	map in the current process, ditto
+;	map_buffers		-	map in the kernel + buffers, ditto
 ;	map_process		-	map the pages pointed to by hl, eats
 ;					a, hl
 ;
 kmap:	    .db 0x80, 0x81, 0x82, 0x83
 
+map_buffers:
 map_kernel:
 map_kernel_di:
 	    push af
diff --git a/Kernel/platform-rc2014-tiny/rc2014.s b/Kernel/platform-rc2014-tiny/rc2014.s
index 75063b07..6e327c9d 100644
--- a/Kernel/platform-rc2014-tiny/rc2014.s
+++ b/Kernel/platform-rc2014-tiny/rc2014.s
@@ -326,9 +326,11 @@ map_process_always_di:
 
 ;=========================================================================
 ; map_kernel - map kernel pages
+; map_buffers - map kernel and buffers (no difference for us)
 ; Inputs: none
 ; Outputs: none; all registers preserved
 ;=========================================================================
+map_buffers:
 map_kernel:
 map_kernel_di:
 	push af
diff --git a/Kernel/platform-sbcv2/sbcv2.s b/Kernel/platform-sbcv2/sbcv2.s
index b92cd948..2b9b4da4 100644
--- a/Kernel/platform-sbcv2/sbcv2.s
+++ b/Kernel/platform-sbcv2/sbcv2.s
@@ -12,6 +12,7 @@
             .globl init_hardware
             .globl interrupt_handler
             .globl _program_vectors
+	    .globl map_buffers
 	    .globl map_kernel
 	    .globl map_kernel_di
 	    .globl map_process
@@ -208,6 +209,9 @@ _program_vectors:
 ;	are definitely off. In our case it's not useful information so both
 ;	symbols end up at the same code.
 ;
+map_buffers:
+	   ; for us no difference. We could potentially use a low 32K bank
+	   ; for buffers but it's not clear it would gain us much value
 map_kernel_di:
 map_kernel:
 	    push af
diff --git a/Kernel/platform-ubee/ubee.s b/Kernel/platform-ubee/ubee.s
index 8fb0bab9..e19541d4 100644
--- a/Kernel/platform-ubee/ubee.s
+++ b/Kernel/platform-ubee/ubee.s
@@ -9,6 +9,7 @@
             .globl init_hardware
             .globl interrupt_handler
             .globl _program_vectors
+	    .globl map_buffers
 	    .globl map_kernel
 	    .globl map_kernel_di
 	    .globl map_process
@@ -364,7 +365,10 @@ _program_vectors:
 ;
 ;	The top 32K bank holds kernel code and pieces of common memory
 ;	The lower 32K is switched between the various user banks.
+;	We don't have a separate 32K for buffers as memory is too precious
+;	on must Microbees
 ;
+map_buffers:
 map_kernel:
 map_kernel_di:
 	    push af
diff --git a/Kernel/platform-z280rc/z280rc.s b/Kernel/platform-z280rc/z280rc.s
index 52ba7296..d483aefa 100644
--- a/Kernel/platform-z280rc/z280rc.s
+++ b/Kernel/platform-z280rc/z280rc.s
@@ -11,6 +11,7 @@
             .globl init_hardware
             .globl interrupt_handler
             .globl _program_vectors
+	    .globl map_buffers
 	    .globl map_kernel
 	    .globl map_kernel_di
 	    .globl map_process
@@ -242,8 +243,12 @@ _program_vectors:
 ;	We map the low 64K 1:1 in kernel mode, keep the top 8K fixed and
 ;	map the others by 'bank' for user mode. We don't actually use the
 ;	hardware user mode yet. It's all just a bodge to get us up and
-;	running
+;	running.
 ;
+;	Some day we probably want the buffers outside of the main map, at
+;	least until we do split I/D somehow.
+;
+map_buffers:
 map_kernel:
 map_kernel_di:
 	    push af