Changeset 615e83d in mainline for uspace/lib/c/arch/ppc32/src/fibril.S

Timestamp:

2018-03-08T18:25:31Z (7 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Children:

55f068c

Parents:

e0a4686

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-03-08 17:43:06)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-03-08 18:25:31)

Message:

Turn context_save/context_restore into standard setjmp/longjmp.

File:

• uspace/lib/c/arch/ppc32/src/fibril.S (modified) (3 diffs)

uspace/lib/c/arch/ppc32/src/fibril.S

@@ -33 +33 @@
 #include <libarch/fibril_context.h>
 
-FUNCTION_BEGIN(context_save)
+FUNCTION_BEGIN(setjmp)
         stw sp, CONTEXT_OFFSET_SP(r3)
         stw r2, CONTEXT_OFFSET_TLS(r3)
@@ -62 +62 @@
         stw r4, CONTEXT_OFFSET_CR(r3)
 
-        # context_save returns 1
-        li r3, 1
+        # setjmp returns 0
+        li r3, 0
         blr
-FUNCTION_END(context_save)
+FUNCTION_END(setjmp)
 
-FUNCTION_BEGIN(context_restore)
+FUNCTION_BEGIN(__longjmp)
         lwz sp, CONTEXT_OFFSET_SP(r3)
         lwz r2, CONTEXT_OFFSET_TLS(r3)
@@ -90 +90 @@
         lwz r31, CONTEXT_OFFSET_R31(r3)
 
-        lwz r4, CONTEXT_OFFSET_CR(r3)
-        mtcr r4
+        lwz r5, CONTEXT_OFFSET_CR(r3)
+        mtcr r5
 
-        lwz r4, CONTEXT_OFFSET_PC(r3)
-        mtlr r4
+        lwz r5, CONTEXT_OFFSET_PC(r3)
+        mtlr r5
 
-        # context_restore returns 0
-        li r3, 0
+        # __longjmp returns second argument
+        li r3, r4
         blr
-FUNCTION_END(context_restore)
+FUNCTION_END(__longjmp)