Changeset 55f068c in mainline for uspace/lib/c/arch/amd64/src/fibril.S

Timestamp:

2018-03-11T17:15:15Z (7 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Children:

12ae6d8

Parents:

615e83d

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-03-11 17:07:39)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-03-11 17:15:15)

Message:

Rename setjmp function to setjmp, use _Noreturn instead of attribute((noreturn)), minor comment changes.

Renaming for consistency with longjmp, and to better express that the implementation
of setjmp has additional properties not defined by the C standard.

File:

• uspace/lib/c/arch/amd64/src/fibril.S (modified) (2 diffs)

uspace/lib/c/arch/amd64/src/fibril.S

@@ -35 +35 @@
 #
 # Save CPU context to context_t variable
-# pointed by the 1st argument. Returns 0 in EAX.
+# pointed by the 1st argument. Returns 0 in RAX.
 #
-FUNCTION_BEGIN(setjmp)
+FUNCTION_BEGIN(__setjmp)
         movq (%rsp), %rdx     # the caller's return %eip
 
@@ -54 +54 @@
         movq %rax, CONTEXT_OFFSET_TLS(%rdi)
 
-        xorq %rax, %rax                      # setjmp returns 0
+        xorq %rax, %rax                      # __setjmp returns 0
         ret
-FUNCTION_END(setjmp)
+FUNCTION_END(__setjmp)
 
 ## Restore current CPU context
 #
 # Restore CPU context from context_t variable
-# pointed by the 1st argument. Returns RSI in EAX.
+# pointed by the 1st argument. Returns second argument in RAX.
 #
 FUNCTION_BEGIN(__longjmp)