Handwritten asm: Register getter/setter functions (#1815)

* Handwritten asm: Register getter/setter functions

* Formatting fix

13 files changed, 133 insertions, 0 deletions

diff --git a/src/libultra/os/getcause.s b/src/libultra/os/getcause.s
new file mode 100644
index 000000000..c709443b5
--- /dev/null
+++ b/src/libultra/os/getcause.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osGetCause)
+    MFC0(   v0, C0_CAUSE)
+    jr      ra
+END(__osGetCause)
diff --git a/src/libultra/os/getcompare.s b/src/libultra/os/getcompare.s
new file mode 100644
index 000000000..a75df38c9
--- /dev/null
+++ b/src/libultra/os/getcompare.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osGetCompare)
+    MFC0(   v0, C0_COMPARE)
+    jr      ra
+END(__osGetCompare)
diff --git a/src/libultra/os/getconfig.s b/src/libultra/os/getconfig.s
new file mode 100644
index 000000000..09d4b02e1
--- /dev/null
+++ b/src/libultra/os/getconfig.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osGetConfig)
+    MFC0(   v0, C0_CONFIG)
+    jr      ra
+END(__osGetConfig)
diff --git a/src/libultra/os/getcount.s b/src/libultra/os/getcount.s
new file mode 100644
index 000000000..fb061f277
--- /dev/null
+++ b/src/libultra/os/getcount.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(osGetCount)
+    MFC0(   v0, C0_COUNT)
+    jr      ra
+END(osGetCount)
diff --git a/src/libultra/os/getfpccsr.s b/src/libultra/os/getfpccsr.s
new file mode 100644
index 000000000..976651a37
--- /dev/null
+++ b/src/libultra/os/getfpccsr.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osGetFpcCsr)
+    CFC1(   v0, C1_FPCSR)
+    jr      ra
+END(__osGetFpcCsr)
diff --git a/src/libultra/os/getsr.s b/src/libultra/os/getsr.s
new file mode 100644
index 000000000..c4382e28f
--- /dev/null
+++ b/src/libultra/os/getsr.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osGetSR)
+    MFC0(   v0, C0_SR)
+    jr      ra
+END(__osGetSR)
diff --git a/src/libultra/os/getwatchlo.s b/src/libultra/os/getwatchlo.s
new file mode 100644
index 000000000..1cc71a755
--- /dev/null
+++ b/src/libultra/os/getwatchlo.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osGetWatchLo)
+    MFC0(   v0, C0_WATCHLO)
+    jr      ra
+END(__osGetWatchLo)
diff --git a/src/libultra/os/setcause.s b/src/libultra/os/setcause.s
new file mode 100644
index 000000000..522fbecf0
--- /dev/null
+++ b/src/libultra/os/setcause.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osSetCause)
+    MTC0(   a0, C0_CAUSE)
+    jr      ra
+END(__osSetCause)
diff --git a/src/libultra/os/setcompare.s b/src/libultra/os/setcompare.s
new file mode 100644
index 000000000..33f764cf9
--- /dev/null
+++ b/src/libultra/os/setcompare.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osSetCompare)
+    MTC0(   a0, C0_COMPARE)
+    jr      ra
+END(__osSetCompare)
diff --git a/src/libultra/os/setconfig.s b/src/libultra/os/setconfig.s
new file mode 100644
index 000000000..6d13f96ce
--- /dev/null
+++ b/src/libultra/os/setconfig.s
@@ -0,0 +1,10 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osSetConfig)
+    MTC0(   a0, C0_CONFIG)
+    jr      ra
+END(__osSetConfig)
diff --git a/src/libultra/os/setfpccsr.s b/src/libultra/os/setfpccsr.s
new file mode 100644
index 000000000..ee7a959e0
--- /dev/null
+++ b/src/libultra/os/setfpccsr.s
@@ -0,0 +1,11 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osSetFpcCsr)
+    CFC1(   v0, fcr31)
+    CTC1(   a0, fcr31)
+    jr      ra
+END(__osSetFpcCsr)
diff --git a/src/libultra/os/setsr.s b/src/libultra/os/setsr.s
new file mode 100644
index 000000000..ae59c4367
--- /dev/null
+++ b/src/libultra/os/setsr.s
@@ -0,0 +1,11 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osSetSR)
+    MTC0(   a0, C0_SR)
+    NOP
+    jr      ra
+END(__osSetSR)
diff --git a/src/libultra/os/setwatchlo.s b/src/libultra/os/setwatchlo.s
new file mode 100644
index 000000000..0923203d3
--- /dev/null
+++ b/src/libultra/os/setwatchlo.s
@@ -0,0 +1,11 @@
+#include "PR/asm.h"
+#include "PR/regdef.h"
+#include "PR/R4300.h"
+
+.text
+
+LEAF(__osSetWatchLo)
+    MTC0(   a0, C0_WATCHLO)
+    NOP
+    jr      ra
+END(__osSetWatchLo)