diff options
Diffstat (limited to 'emu')
| -rw-r--r-- | emu/NetBSD/asm-arm.S | 78 | ||||
| -rw-r--r-- | emu/NetBSD/mkfile | 1 | ||||
| -rw-r--r-- | emu/NetBSD/segflush-arm.c | 19 |
3 files changed, 98 insertions, 0 deletions
diff --git a/emu/NetBSD/asm-arm.S b/emu/NetBSD/asm-arm.S new file mode 100644 index 00000000..afaa5479 --- /dev/null +++ b/emu/NetBSD/asm-arm.S @@ -0,0 +1,78 @@ +#include <machine/asm.h> + +/* + * ulong _tas(ulong*); + */ +#if __ARM_ARCH >= 6 + +#if __ARM_ARCH >= 7 +#define DMB dmb +#else +#define DMB mcr p15, 0, r0, c7, c10, 5 +#endif + +ENTRY(_tas) + @ args = 0, pretend = 0, frame = 0 + @ frame_needed = 0, uses_anonymous_args = 0 + @ link register save eliminated. + @ lr needed for prologue + DMB + mov r1, r0 + mov r2, #0xaa +.Loop: + ldrex r0, [r1] + cmp r0, #0 + bne .Lockbusy + strex r3, r2, [r1] + cmp r3, #0 + bne .Loop + DMB + bx lr +.Lockbusy: + clrex + bx lr + END(_tas) + +#else /* __ARM_ARCH <= 5*/ + +ENTRY(_tas) + @ args = 0, pretend = 0, frame = 0 + @ frame_needed = 0, uses_anonymous_args = 0 + @ link register save eliminated. + @ lr needed for prologue + mov r3, #1 + mov r1, r0 + swp r0, r3, [r1] + bx lr + END(_tas) + +#endif /* __ARM_ARCH <= 5*/ + + +/* + * void FPsave(void *); + */ +ENTRY(FPsave) + @ args = 0, pretend = 0, frame = 4 + @ frame_needed = 1, uses_anonymous_args = 0 + mov ip, sp + stmfd sp!, {fp, ip, lr, pc} + sub fp, ip, #4 + sub sp, sp, #4 + str r0, [fp, #-16] + ldmea fp, {fp, sp, pc} + END(FPsave) + +/* + * void FPrestore(void *); + */ +ENTRY(FPrestore) + @ args = 0, pretend = 0, frame = 4 + @ frame_needed = 1, uses_anonymous_args = 0 + mov ip, sp + stmfd sp!, {fp, ip, lr, pc} + sub fp, ip, #4 + sub sp, sp, #4 + str r0, [fp, #-16] + ldmea fp, {fp, sp, pc} + END(FPrestore) diff --git a/emu/NetBSD/mkfile b/emu/NetBSD/mkfile index 17516997..6a9b6a5c 100644 --- a/emu/NetBSD/mkfile +++ b/emu/NetBSD/mkfile @@ -40,6 +40,7 @@ default:V: $O.$CONF $O.$CONF: $OBJ $CONF.c $CONF.root.h $LIBFILES $CC $CFLAGS '-DKERNDATE='$KERNDATE $CONF.c $LD $LDFLAGS -o $target $OBJ $CONF.$O $LIBFILES $SYSLIBS + $PAXCTL $target install:V: $O.$CONF cp $O.$CONF $INSTALLDIR/$CONF diff --git a/emu/NetBSD/segflush-arm.c b/emu/NetBSD/segflush-arm.c new file mode 100644 index 00000000..a03b438b --- /dev/null +++ b/emu/NetBSD/segflush-arm.c @@ -0,0 +1,19 @@ +#include <sys/types.h> +#include <sys/mman.h> +#include <machine/sysarch.h> + +#include "dat.h" + + +int +segflush(void *a, ulong n) +{ + struct arm_sync_icache_args args; + + mprotect(a, (size_t)n, PROT_READ | PROT_WRITE | PROT_EXEC); + + args.addr = (uintptr_t)a; + args.len = (size_t)n; + sysarch(ARM_SYNC_ICACHE, (void *)&args); + return 0; +} |