68000: set the a5 pointer properly in the sig case

diff --git a/Kernel/lowlevel-68000.S b/Kernel/lowlevel-68000.S
index 0100f6b..8b427cd 100644 (file)
--- a/Kernel/lowlevel-68000.S
+++ b/Kernel/lowlevel-68000.S
@@ -275,6 +275,7 @@ L2: subql   IMM (1),d4
                .globl bus_error,addr_error,illegal,divzero,chk,trapv,priv
                .globl trace,unimpa,unimpf,misctrap,trap15,trap14,sysc_err
                .globl spurious,unexpected,uninit
+               .globl udata_shadow
 
 .mri 1
 get_usp:       move.l  usp,a0
@@ -362,6 +363,7 @@ trap14:             movem.l a2-a6/d2-d7,-(sp)
                move.b d0,kernel_flag
                ; FIXME: EI per platform really
                and.w #$F8FF,sr
+               move.l udata_shadow,a5
                bsr unix_syscall
                ; FIXME: signal handling in the C code or not ?
                or.w #$0700,sr
@@ -454,7 +456,8 @@ panic_sig2: asciz ": ksig"
                .align 2
 
 sig_user:      movem.l a0-a6/d0-d7,-(sp)
-               move.l (U_DATA__U_PTAB),-(sp)
+               move.l udata_shadow,a5
+               move.l U_DATA__U_PTAB(a5),-(sp)
                bsr ssig
                adda #4,sp
                ; Do signal processing bit here if we return
@@ -504,3 +507,4 @@ outcharhex: move.w d0,-(sp)
 
 .area data
 kernel_flag:   byte 0
+udata_shadow:  long 0