From 8800ff5a77ddccd2f8d67532dcf1b78880798b5f Mon Sep 17 00:00:00 2001
From: Elliot Nunn <elliotnunn@me.com>
Date: Mon, 26 Mar 2018 07:05:18 +0800
Subject: [PATCH] Reverse part of the Emulator Data Page

Version 02.11 of the NanoKernel prints an annotated crash dump of the
EDP. This version has been partly reversed (using Hopper!), and the
sometimes-cryptic EDP field names have been added to EmulatorPublic.a.
---
 Internal/EmulatorPublic.a | 52 +++++++++++++++++++++++++++++++++++++--
 Internal/NKPublic.a       |  6 ++---
 2 files changed, 53 insertions(+), 5 deletions(-)

diff --git a/Internal/EmulatorPublic.a b/Internal/EmulatorPublic.a
index be5ea29..d5c6f94 100644
--- a/Internal/EmulatorPublic.a
+++ b/Internal/EmulatorPublic.a
@@ -1,7 +1,55 @@
 EDP						record	0,INCR
 
-						org		0x70
-IplValue				ds.w	1	; 070 ; 68k int level or -1
+D0						ds.l	1	; 000 ; r8
+D1						ds.l	1	; 004 ; r9
+D2						ds.l	1	; 008 ; r10
+D3						ds.l	1	; 00c ; r11
+D4						ds.l	1	; 010 ; r12
+D5						ds.l	1	; 014 ; r13
+D6						ds.l	1	; 018 ; r14
+D7						ds.l	1	; 01c ; r15
+
+A0						ds.l	1	; 020 ; r16
+A1						ds.l	1	; 024 ; r17
+A2						ds.l	1	; 028 ; r18
+A3						ds.l	1	; 02c ; r19
+A4						ds.l	1	; 030 ; r20
+A5						ds.l	1	; 034 ; r30
+A6						ds.l	1	; 038 ; r31
+A7						ds.l	1	; 03c ; r1 (PowerPC SP)
+
+SR						ds.l	1	; 040
+PC						ds.l	1	; 044
+USP						ds.l	1	; 048
+ISP						ds.l	1	; 04c
+MSP						ds.l	1	; 050
+VBR						ds.l	1	; 054
+SFC						ds.l	1	; 058
+DFC						ds.l	1	; 05c
+						ds.l	1	; 060 ; these four are 'cac-ar,instr,trc_pc'
+						ds.l	1	; 064
+						ds.l	1	; 068
+						ds.l	1	; 06c
+INTM_L					ds.l	1	; 070 ; interrupt level or -1
+DISP					ds.l	1	; 074
+CODE					ds.l	1	; 078
+SP						ds.l	1	; 07c
+						ds.l	1	; 080 ; these four are 'ctxflg,info-adr,uea'
+						ds.l	1	; 084
+						ds.l	1	; 088
+						ds.l	1	; 08c
+						ds.l	1	; 090 ; these four are 'data_h-l,data,imm_d'
+						ds.l	1	; 094
+						ds.l	1	; 098
+						ds.l	1	; 09c
+B_DSP					ds.l	1	; 0a0
+SR_FLG					ds.l	1	; 0a4
+CTR						ds.l	1	; 0a8
+LR						ds.l	1	; 0ac
+NIA						ds.l	1	; 0b0
+XER						ds.l	1	; 0b4
+CRL_VFL					ds.l	1	; 0b8
+SSW						ds.l	1	; 0bc
 
 						org		0x100
 ContextBlock			ds.b	768	; 100:300 ; Emulator Context Block, ECB; NKv2 ties this to blue task
diff --git a/Internal/NKPublic.a b/Internal/NKPublic.a
index 64e26bc..6b57890 100644
--- a/Internal/NKPublic.a
+++ b/Internal/NKPublic.a
@@ -639,7 +639,7 @@ ThudSavedR31			ds.l	1	; 77c
 ThudSavedCR				ds.l	1	; 780
 ThudSavedMQ				ds.l	1	; 784
 ThudSavedXER			ds.l	1	; 788
-ThudSavedSPRG2			ds.l	1	; 78c
+ThudSavedSPRG2			ds.l	1	; 78c ; 'LR'
 ThudSavedCTR			ds.l	1	; 790
 ThudSavedPVR			ds.l	1	; 794
 ThudSavedDSISR			ds.l	1	; 798
@@ -700,8 +700,8 @@ ThudSavedF28			ds.d	1	; 8e0
 ThudSavedF29			ds.d	1	; 8e8
 ThudSavedF30			ds.d	1	; 8f0
 ThudSavedF31			ds.d	1	; 8f8
-SomethingSerial			ds.l	1	; 900
-ThudSavedLR				ds.l	1	; 904
+SomethingSerial			ds.l	1	; 900 ; 'fpscr'
+ThudSavedLR				ds.l	1	; 904 ; 'caller'
 RTAS_Proc				ds.l	1	; 908 ; r8 on kernel entry
 EndOfPanicArea