Changeset 58fe85a for libcfa/src/concurrency/CtxSwitch-arm32.S

Timestamp:

Jan 7, 2021, 3:27:00 PM (5 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, master, new-ast-unique-expr, pthread-emulation, qualifiedEnum

Children:

2b4daf2, 64aeca0

Parents:

3c64c668 (diff), eef8dfb (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge branch 'master' into park_unpark

File:

• libcfa/src/concurrency/CtxSwitch-arm32.S (moved) (moved from libcfa/src/concurrency/CtxSwitch-arm.S ) (3 diffs)

libcfa/src/concurrency/CtxSwitch-arm32.S

@@ -1 @@
-        @ 32 bit ARM context switch
-        @ This function assumes that r9 has no special meaning on the platform it's
-        @ being built on.
-        @ If r9 is special, uncomment the following line and it will be left alone
+        # 32 bit ARM context switch
+        # This function assumes that r9 has no special meaning on the platform it's
+        # being built on.
+        # If r9 is special, uncomment the following line and it will be left alone
 
-        @ #define R9_SPECIAL
+        # #define R9_SPECIAL
 
         #define PTR_BYTE        4
@@ -17 +17 @@
 
 __cfactx_switch:
-        @ save callee-saved registers: r4-r8, r10, r11, r13(sp) (plus r9 depending on platform specification)
-        @ I've seen reference to 31 registers on 64-bit, if this is the case, more need to be saved
-        @ save thread state registers: r14(lr)
-        @ r12(ip) is intra-procedure-call scratch register, does not need saving between function calls
+        # save callee-saved registers: r4-r8, r10, r11, r13(sp) (plus r9 depending on platform specification)
+        # I've seen reference to 31 registers on 64-bit, if this is the case, more need to be saved
+        # save thread state registers: r14(lr)
+        # r12(ip) is intra-procedure-call scratch register, does not need saving between function calls
 
         #ifdef R9_SPECIAL
@@ -28 +28 @@
         #endif // R9_SPECIAL
 
-        @ save floating point registers: s16-s31
+        # save floating point registers: s16-s31
         vstmdb r13!, {s16-s31}
 
-        @ save frame pointer and stack pointer to outgoing datastructure
+        # save frame pointer and stack pointer to outgoing datastructure
         str sp, [r0, #SP_OFFSET]
         str fp, [r0, #FP_OFFSET]
 
-        @ restore frame pointer and stack pointer from incoming datastructure
+        # restore frame pointer and stack pointer from incoming datastructure
         ldr fp, [r1, #FP_OFFSET]
         ldr sp, [r1, #SP_OFFSET]
 
-        @ restore floating point registers: s16-s31
+        # restore floating point registers: s16-s31
         vldm r13!, {s16-s31}
-        @ restore r14(lr)
-        @ restore 64-bit extra registers?
-        @ restore callee-saved registers: r4-r8, r10, r11, r13
+        # restore r14(lr)
+        # restore 64-bit extra registers?
+        # restore callee-saved registers: r4-r8, r10, r11, r13
 
         #ifdef R9_SPECIAL
         ldmfd r13!, {r4-r8,r10,r11,r15}
         #else
-        ldmfd r13!, {r4-r11,r14}    @ loading r14 back into r15 returns
+        ldmfd r13!, {r4-r11,r14}    # loading r14 back into r15 returns
 
         mov r15, r14