Changeset 94d614e in mainline for kernel/arch/sparc64/src/asm.S

Timestamp:

2006-07-13T17:32:38Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

a5f76758

Parents:

63cda71

Message:

Remove OpenFirmware calls from kernel/ entirely.

Switch the sparc64 port to use bootinfo.

Copy memcpy from boot/ to sparc64 kernel/ and
adjust it for memcpy_from/to_uspace.

File:

• kernel/arch/sparc64/src/asm.S (modified) (1 diff)

kernel/arch/sparc64/src/asm.S

@@ -43 +43 @@
 memcpy_from_uspace:
 memcpy_to_uspace:
+        .register       %g2, #scratch
+        .register       %g3, #scratch
+        add     %o1, 7, %g1
+        and     %g1, -8, %g1
+        cmp     %o1, %g1
+        be,pn   %xcc, 3f
+        add     %o0, 7, %g1
+        mov     0, %g3
+0:
+        brz,pn  %o2, 2f
+        mov     0, %g2
+1:
+        ldub    [%g3 + %o1], %g1
+        add     %g2, 1, %g2
+        cmp     %o2, %g2
+        stb     %g1, [%g3 + %o0]
+        bne,pt  %xcc, 1b
+        mov     %g2, %g3
+2:
+        jmp     %o7 + 8                 ! exit point
+        mov     %o1, %o0
+3:
+        and     %g1, -8, %g1
+        cmp     %o0, %g1
+        bne,pt  %xcc, 0b
+        mov     0, %g3
+        srlx    %o2, 3, %g4
+        brz,pn  %g4, 5f
+        mov     0, %g5
+4:
+        sllx    %g3, 3, %g2
+        add     %g5, 1, %g3
+        ldx     [%o1 + %g2], %g1
+        mov     %g3, %g5
+        cmp     %g4, %g3
+        bne,pt  %xcc, 4b
+        stx     %g1, [%o0 + %g2]
+5:
+        and     %o2, 7, %o2
+        brz,pn  %o2, 2b
+        sllx    %g4, 3, %g1
+        mov     0, %g2
+        add     %g1, %o0, %o0
+        add     %g1, %o1, %g4
+        mov     0, %g3
+6:
+        ldub    [%g2 + %g4], %g1
+        stb     %g1, [%g2 + %o0]
+        add     %g3, 1, %g2
+        cmp     %o2, %g2
+        bne,pt  %xcc, 6b
+        mov     %g2, %g3
 
-        b _memcpy
-        nop
+        jmp     %o7 + 8                 ! exit point
+        mov     %o1, %o0
 
 memcpy_from_uspace_failover_address:
 memcpy_to_uspace_failover_address:
-        b memcpy_from_uspace_failover_address
-        nop
+        jmp     %o7 + 8                 ! exit point
+        mov     %g0, %o0                ! return 0 on failure
 
 memsetb:
         b _memsetb
         nop
-
-.global ofw
-ofw:
-        save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
-        set ofw_cif, %l0
-        ldx [%l0], %l0
-
-        rdpr  %pstate, %l1
-        and  %l1, ~PSTATE_AM_BIT, %l2
-        wrpr  %l2, 0, %pstate
-            
-        jmpl %l0, %o7
-        mov %i0, %o0
-        
-        wrpr  %l1, 0, %pstate
-
-        ret
-        restore %o0, 0, %o0