[OpenBIOS] [PATCH 5/6] SPARC32: add basic read-only Forth register support

[Mark Cave-Ayland]

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>
---
 arch/sparc32/build.xml |    1 +
 arch/sparc32/cpu.fs    |  100 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 arch/sparc32/cpu.fs

diff --git a/arch/sparc32/build.xml b/arch/sparc32/build.xml
index 81c3586..976432c 100644
--- a/arch/sparc32/build.xml
+++ b/arch/sparc32/build.xml
@@ -1,6 +1,7 @@
 <build condition="SPARC32">
 
  <dictionary name="openbios-sparc32" init="openbios">
+  <object source="cpu.fs" target="forth"/>
   <object source="tree.fs" target="forth"/>
   <object source="init.fs" target="forth"/>
   <object source="QEMU,tcx.bin" target="fcode" condition="DRIVER_SBUS"/>
diff --git a/arch/sparc32/cpu.fs b/arch/sparc32/cpu.fs
new file mode 100644
index 0000000..fab685a
--- /dev/null
+++ b/arch/sparc32/cpu.fs
@@ -0,0 +1,100 @@
+include config.fs
+
+\ SPARC32 cpu registers
+
+: %g0 0 ;
+: %g1 saved-context h# 14 + @ ;
+: %g2 saved-context h# 18 + @ ;
+: %g3 saved-context h# 1c + @ ;
+: %g4 saved-context h# 20 + @ ;
+: %g5 saved-context h# 24 + @ ;
+: %g6 saved-context h# 28 + @ ;
+: %g7 saved-context h# 2c + @ ;
+
+: %psr saved-context @ ;
+: %wim saved-context h# 4 + @ ;
+: %pc saved-context h# 250 + @ ;
+
+: set-pc ( addr )
+  saved-context h# 250 +
+  !
+;
+
+: .globals
+  cr
+  s" %psr: " type %psr u. cr
+  s" %wim: " type %wim u. cr
+  s" %pc: " type %pc u. cr
+  s" %g0: " type %g0 u. cr
+  s" %g1: " type %g1 u. cr
+  s" %g2: " type %g2 u. cr
+  s" %g3: " type %g3 u. cr
+  s" %g4: " type %g4 u. cr
+  s" %g5: " type %g5 u. cr
+  s" %g6: " type %g6 u. cr
+  s" %g7: " type %g7 u. cr
+;
+
+\ Local registers
+\ WARNING: currently only window 0 (current window) supported
+
+: %o0 saved-context h# 30 + @ ;
+: %o1 saved-context h# 34 + @ ;
+: %o2 saved-context h# 38 + @ ;
+: %o3 saved-context h# 3c + @ ;
+: %o4 saved-context h# 40 + @ ;
+: %o5 saved-context h# 44 + @ ;
+: %o6 saved-context h# 48 + @ ;
+: %o7 saved-context h# 4c + @ ;
+
+: %l0 saved-context h# 50 + @ ;
+: %l1 saved-context h# 54 + @ ;
+: %l2 saved-context h# 58 + @ ;
+: %l3 saved-context h# 5c + @ ;
+: %l4 saved-context h# 60 + @ ;
+: %l5 saved-context h# 64 + @ ;
+: %l6 saved-context h# 68 + @ ;
+: %l7 saved-context h# 6c + @ ;
+
+: %i0 saved-context h# 70 + @ ;
+: %i1 saved-context h# 74 + @ ;
+: %i2 saved-context h# 78 + @ ;
+: %i3 saved-context h# 7c + @ ;
+: %i4 saved-context h# 80 + @ ;
+: %i5 saved-context h# 84 + @ ;
+: %i6 saved-context h# 88 + @ ;
+: %i7 saved-context h# 8c + @ ;
+
+: .locals
+  cr
+  s" %o0: " type %o0 u. cr
+  s" %o1: " type %o1 u. cr
+  s" %o2: " type %o2 u. cr
+  s" %o3: " type %o3 u. cr
+  s" %o4: " type %o4 u. cr
+  s" %o5: " type %o5 u. cr
+  s" %o6: " type %o6 u. cr
+  s" %o7: " type %o7 u. cr
+  cr
+  s" %l0: " type %l0 u. cr
+  s" %l1: " type %l1 u. cr
+  s" %l2: " type %l2 u. cr
+  s" %l3: " type %l3 u. cr
+  s" %l4: " type %l4 u. cr
+  s" %l5: " type %l5 u. cr
+  s" %l6: " type %l6 u. cr
+  s" %l7: " type %l7 u. cr
+  cr
+  s" %i0: " type %i0 u. cr
+  s" %i1: " type %i1 u. cr
+  s" %i2: " type %i2 u. cr
+  s" %i3: " type %i3 u. cr
+  s" %i4: " type %i4 u. cr
+  s" %i5: " type %i5 u. cr
+  s" %i6: " type %i6 u. cr
+  s" %i7: " type %i7 u. cr
+;
+
+: .registers
+  .globals .locals
+;
-- 
1.7.10.4