patch-2.4.2 linux/arch/s390/kernel/mathemu.c
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- Lines: 1042
- Date:
Tue Feb 13 14:13:43 2001
- Orig file:
v2.4.1/linux/arch/s390/kernel/mathemu.c
- Orig date:
Fri May 12 11:41:45 2000
diff -u --recursive --new-file v2.4.1/linux/arch/s390/kernel/mathemu.c linux/arch/s390/kernel/mathemu.c
@@ -9,6 +9,7 @@
* that does not have the IEEE fpu
*/
+#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
@@ -16,7 +17,59 @@
#include <asm/uaccess.h>
#include <asm/mathemu.h>
-static void set_CC_df(__u64 val1,__u64 val2) {
+#ifdef CONFIG_SYSCTL
+int sysctl_ieee_emulation_warnings=1;
+#endif
+
+#define mathemu_put_user(x, ptr) \
+{ \
+ if(put_user((x),(ptr))) \
+ return 1; \
+}
+
+#define mathemu_get_user(x, ptr) \
+{ \
+ if(get_user((x),(ptr))) \
+ return 1; \
+}
+
+
+#define mathemu_copy_from_user(to,from,n) \
+{ \
+ if(copy_from_user((to),(from),(n))==-EFAULT) \
+ return 1; \
+}
+
+
+#define mathemu_copy_to_user(to, from, n) \
+{ \
+ if(copy_to_user((to),(from),(n))==-EFAULT) \
+ return 1; \
+}
+
+
+
+static void display_emulation_not_implemented(char *instr)
+{
+ struct pt_regs *regs;
+ __u16 *location;
+
+#if CONFIG_SYSCTL
+ if(sysctl_ieee_emulation_warnings)
+#endif
+ {
+ regs=current->thread.regs;
+ location = (__u16 *)(regs->psw.addr-S390_lowcore.pgm_ilc);
+ printk("%s ieee fpu instruction not emulated process name: %s pid: %d \n",
+ instr,
+ current->comm, current->pid);
+ printk("%s's PSW: %08lx %08lx\n",instr,
+ (unsigned long) regs->psw.mask,
+ (unsigned long) location);
+ }
+}
+
+static int set_CC_df(__u64 val1,__u64 val2) {
int rc;
rc = __cmpdf2(val1,val2);
current->thread.regs->psw.mask &= 0xFFFFCFFF;
@@ -28,9 +81,10 @@
current->thread.regs->psw.mask |= 0x00002000;
break;
}
+ return 0;
}
-static void set_CC_sf(__u32 val1,__u32 val2) {
+static int set_CC_sf(__u32 val1,__u32 val2) {
int rc;
rc = __cmpsf2(val1,val2);
current->thread.regs->psw.mask &= 0xFFFFCFFF;
@@ -42,384 +96,473 @@
current->thread.regs->psw.mask |= 0x00002000;
break;
}
+ return 0;
}
-static void emu_adb (int rx, __u64 val) {
+static int emu_adb (int rx, __u64 val) {
current->thread.fp_regs.fprs[rx].d = __adddf3(current->thread.fp_regs.fprs[rx].d,val);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_adbr (int rx, int ry) {
+static int emu_adbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d = __adddf3(current->thread.fp_regs.fprs[rx].d,
current->thread.fp_regs.fprs[ry].d);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_aeb (int rx, __u32 val) {
+static int emu_aeb (int rx, __u32 val) {
current->thread.fp_regs.fprs[rx].f = __addsf3(current->thread.fp_regs.fprs[rx].f,val);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_aebr (int rx, int ry) {
+static int emu_aebr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f = __addsf3(current->thread.fp_regs.fprs[rx].f,
current->thread.fp_regs.fprs[ry].f);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_axbr (int rx, int ry) {
- printk("axbr emulation not implemented!\n");
+static int emu_axbr (int rx, int ry) {
+ display_emulation_not_implemented("axbr");
+ return 0;
}
-static void emu_cdb (int rx, __u64 val) {
+static int emu_cdb (int rx, __u64 val) {
set_CC_df(current->thread.fp_regs.fprs[rx].d,val);
+ return 0;
}
-static void emu_cdbr (int rx, int ry) {
+static int emu_cdbr (int rx, int ry) {
set_CC_df(current->thread.fp_regs.fprs[rx].d,current->thread.fp_regs.fprs[ry].d);
+ return 0;
}
-static void emu_cdfbr (int rx, int ry) {
+static int emu_cdfbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d =
__floatsidf(current->thread.regs->gprs[ry]);
+ return 0;
}
-static void emu_ceb (int rx, __u32 val) {
+static int emu_ceb (int rx, __u32 val) {
set_CC_sf(current->thread.fp_regs.fprs[rx].f,val);
+ return 0;
}
-static void emu_cebr (int rx, int ry) {
+static int emu_cebr (int rx, int ry) {
set_CC_sf(current->thread.fp_regs.fprs[rx].f,current->thread.fp_regs.fprs[ry].f);
+ return 0;
}
-static void emu_cefbr (int rx, int ry) {
+static int emu_cefbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f =
__floatsisf(current->thread.regs->gprs[ry]);
+ return 0;
}
-static void emu_cfdbr (int rx, int ry, int mask) {
+static int emu_cfdbr (int rx, int ry, int mask) {
current->thread.regs->gprs[rx] =
__fixdfsi(current->thread.fp_regs.fprs[ry].d);
+ return 0;
}
-static void emu_cfebr (int rx, int ry, int mask) {
+static int emu_cfebr (int rx, int ry, int mask) {
current->thread.regs->gprs[rx] =
__fixsfsi(current->thread.fp_regs.fprs[ry].f);
+ return 0;
}
-static void emu_cfxbr (int rx, int ry, int mask) {
- printk("cfxbr emulation not implemented!\n");
+static int emu_cfxbr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("cfxbr");
+ return 0;
}
-static void emu_cxbr (int rx, int ry) {
- printk("cxbr emulation not implemented!\n");
+static int emu_cxbr (int rx, int ry) {
+ display_emulation_not_implemented("cxbr");
+ return 0;
}
-static void emu_cxfbr (int rx, int ry) {
- printk("cxfbr emulation not implemented!\n");
+static int emu_cxfbr (int rx, int ry) {
+ display_emulation_not_implemented("cxfbr");
+ return 0;
}
-static void emu_ddb (int rx, __u64 val) {
+static int emu_ddb (int rx, __u64 val) {
current->thread.fp_regs.fprs[rx].d = __divdf3(current->thread.fp_regs.fprs[rx].d,val);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_ddbr (int rx, int ry) {
+static int emu_ddbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d = __divdf3(current->thread.fp_regs.fprs[rx].d,
current->thread.fp_regs.fprs[ry].d);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_deb (int rx, __u32 val) {
+static int emu_deb (int rx, __u32 val) {
current->thread.fp_regs.fprs[rx].f = __divsf3(current->thread.fp_regs.fprs[rx].f,val);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_debr (int rx, int ry) {
+static int emu_debr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f = __divsf3(current->thread.fp_regs.fprs[rx].f,
current->thread.fp_regs.fprs[ry].f);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_didbr (int rx, int ry, int mask) {
- printk("didbr emulation not implemented!\n");
+static int emu_didbr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("didbr");
+ return 0;
}
-static void emu_diebr (int rx, int ry, int mask) {
- printk("diebr emulation not implemented!\n");
+static int emu_diebr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("diebr");
+ return 0;
}
-static void emu_dxbr (int rx, int ry) {
- printk("dxbr emulation not implemented!\n");
+static int emu_dxbr (int rx, int ry) {
+ display_emulation_not_implemented("dxbr");
+ return 0;
}
-static void emu_efpc (int rx, int ry) {
- printk("efpc emulation not implemented!\n");
+static int emu_efpc (int rx, int ry) {
+ current->thread.regs->gprs[rx]=current->thread.fp_regs.fpc;
+ return 0;
}
-static void emu_fidbr (int rx, int ry, int mask) {
- printk("fidbr emulation not implemented!\n");
+static int emu_fidbr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("fidbr");
+ return 0;
}
-static void emu_fiebr (int rx, int ry, int mask) {
- printk("fiebr emulation not implemented!\n");
+static int emu_fiebr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("fiebr");
+ return 0;
}
-static void emu_fixbr (int rx, int ry, int mask) {
- printk("fixbr emulation not implemented!\n");
+static int emu_fixbr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("fixbr");
+ return 0;
}
-static void emu_kdb (int rx, __u64 val) {
- printk("kdb emulation not implemented!\n");
+static int emu_kdb (int rx, __u64 val) {
+ display_emulation_not_implemented("kdb");
+ return 0;
}
-static void emu_kdbr (int rx, int ry) {
- printk("kdbr emulation not implemented!\n");
+static int emu_kdbr (int rx, int ry) {
+ display_emulation_not_implemented("kdbr");
+ return 0;
}
-static void emu_keb (int rx, __u32 val) {
- printk("keb emulation not implemented!\n");
+static int emu_keb (int rx, __u32 val) {
+ display_emulation_not_implemented("keb");
+ return 0;
}
-static void emu_kebr (int rx, int ry) {
- printk("kebr emulation not implemented!\n");
+static int emu_kebr (int rx, int ry) {
+ display_emulation_not_implemented("kebr");
+ return 0;
}
-static void emu_kxbr (int rx, int ry) {
- printk("kxbr emulation not implemented!\n");
+static int emu_kxbr (int rx, int ry) {
+ display_emulation_not_implemented("kxbr");
+ return 0;
}
-static void emu_lcdbr (int rx, int ry) {
+static int emu_lcdbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d =
__negdf2(current->thread.fp_regs.fprs[ry].d);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_lcebr (int rx, int ry) {
+static int emu_lcebr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f =
__negsf2(current->thread.fp_regs.fprs[ry].f);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_lcxbr (int rx, int ry) {
- printk("lcxbr emulation not implemented!\n");
+static int emu_lcxbr (int rx, int ry) {
+ display_emulation_not_implemented("lcxbr");
+ return 0;
}
-static void emu_ldeb (int rx, __u32 val) {
+static int emu_ldeb (int rx, __u32 val) {
current->thread.fp_regs.fprs[rx].d = __extendsfdf2(val);
+ return 0;
}
-static void emu_ldebr (int rx, int ry) {
+static int emu_ldebr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d =
__extendsfdf2(current->thread.fp_regs.fprs[ry].f);
+ return 0;
}
-static void emu_ldxbr (int rx, int ry) {
- printk("ldxbr emulation not implemented!\n");
+static int emu_ldxbr (int rx, int ry) {
+ display_emulation_not_implemented("ldxbr");
+ return 0;
}
-static void emu_ledbr (int rx, int ry) {
+static int emu_ledbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f = __truncdfsf2(current->thread.fp_regs.fprs[ry].d);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_lexbr (int rx, int ry) {
- printk("lexbr emulation not implemented!\n");
+static int emu_lexbr (int rx, int ry) {
+ display_emulation_not_implemented("lexbr");
+ return 0;
}
-static void emu_lndbr (int rx, int ry) {
- printk("lndbr emulation not implemented!\n");
+static int emu_lndbr (int rx, int ry) {
+ display_emulation_not_implemented("lndbr");
+ return 0;
}
-static void emu_lnebr (int rx, int ry) {
- printk("lnebr emulation not implemented!\n");
+static int emu_lnebr (int rx, int ry) {
+ display_emulation_not_implemented("lnebr");
+ return 0;
}
-static void emu_lnxbr (int rx, int ry) {
- printk("lnxbr emulation not implemented!\n");
+static int emu_lnxbr (int rx, int ry) {
+ display_emulation_not_implemented("lnxbr");
+ return 0;
}
-static void emu_lpdbr (int rx, int ry) {
+static int emu_lpdbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d = __absdf2(current->thread.fp_regs.fprs[ry].d);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0);
+ return 0;
}
-static void emu_lpebr (int rx, int ry) {
+static int emu_lpebr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f = __abssf2(current->thread.fp_regs.fprs[ry].f);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_lpxbr (int rx, int ry) {
- printk("lpxbr emulation not implemented!\n");
+static int emu_lpxbr (int rx, int ry) {
+ display_emulation_not_implemented("lpxbr");
+ return 0;
}
-static void emu_ltdbr (int rx, int ry) {
+static int emu_ltdbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d = current->thread.fp_regs.fprs[ry].d;
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_ltebr (int rx, int ry) {
+static int emu_ltebr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f = current->thread.fp_regs.fprs[ry].f;
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_ltxbr (int rx, int ry) {
- printk("ltxbr emulation not implemented!\n");
+static int emu_ltxbr (int rx, int ry) {
+ display_emulation_not_implemented("ltxbr");
+ return 0;
}
-static void emu_lxdb (int rx, __u64 val) {
- printk("lxdb emulation not implemented!\n");
+static int emu_lxdb (int rx, __u64 val) {
+ display_emulation_not_implemented("lxdb");
+ return 0;
}
-static void emu_lxdbr (int rx, int ry) {
- printk("lxdbr emulation not implemented!\n");
+static int emu_lxdbr (int rx, int ry) {
+ display_emulation_not_implemented("lxdbr");
+ return 0;
}
-static void emu_lxeb (int rx, __u32 val) {
- printk("lxeb emulation not implemented!\n");
+static int emu_lxeb (int rx, __u32 val) {
+ display_emulation_not_implemented("lxeb");
+ return 0;
}
-static void emu_lxebr (int rx, int ry) {
- printk("lxebr emulation not implemented!\n");
+static int emu_lxebr (int rx, int ry) {
+ display_emulation_not_implemented("lxebr");
+ return 0;
}
-static void emu_madb (int rx, __u64 val, int mask) {
- printk("madb emulation not implemented!\n");
+static int emu_madb (int rx, __u64 val, int mask) {
+ display_emulation_not_implemented("madb");
+ return 0;
}
-static void emu_madbr (int rx, int ry, int mask) {
- printk(" emulation not implemented!\n");
+static int emu_madbr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("madbr");
+ return 0;
}
-static void emu_maeb (int rx, __u32 val, int mask) {
- printk("maeb emulation not implemented!\n");
+static int emu_maeb (int rx, __u32 val, int mask) {
+ display_emulation_not_implemented("maeb");
+ return 0;
}
-static void emu_maebr (int rx, int ry, int mask) {
- printk("maebr emulation not implemented!\n");
+static int emu_maebr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("maebr");
+ return 0;
}
-static void emu_mdb (int rx, __u64 val) {
+static int emu_mdb (int rx, __u64 val) {
current->thread.fp_regs.fprs[rx].d = __muldf3(current->thread.fp_regs.fprs[rx].d,val);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_mdbr (int rx, int ry) {
+static int emu_mdbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d = __muldf3(current->thread.fp_regs.fprs[rx].d,
current->thread.fp_regs.fprs[ry].d);
set_CC_df(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_mdeb (int rx, __u32 val) {
- printk("mdeb emulation not implemented!\n");
+static int emu_mdeb (int rx, __u32 val) {
+ display_emulation_not_implemented("mdeb");
+ return 0;
}
-static void emu_mdebr (int rx, int ry) {
- printk("mdebr emulation not implemented!\n");
+static int emu_mdebr (int rx, int ry) {
+ display_emulation_not_implemented("mdebr");
+ return 0;
}
-static void emu_meeb (int rx, __u32 val) {
+static int emu_meeb (int rx, __u32 val) {
current->thread.fp_regs.fprs[rx].f = __mulsf3(current->thread.fp_regs.fprs[rx].f,
val);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_meebr (int rx, int ry) {
+static int emu_meebr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f = __mulsf3(current->thread.fp_regs.fprs[rx].f,
current->thread.fp_regs.fprs[ry].f);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_msdb (int rx, __u64 val, int mask) {
- printk("msdb emulation not implemented!\n");
+static int emu_msdb (int rx, __u64 val, int mask) {
+ display_emulation_not_implemented("msdb");
+ return 0;
}
-static void emu_msdbr (int rx, int ry, int mask) {
- printk("msdbr emulation not implemented!\n");
+static int emu_msdbr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("msdbr");
+ return 0;
}
-static void emu_mseb (int rx, __u32 val, int mask) {
- printk("mseb emulation not implemented!\n");
+static int emu_mseb (int rx, __u32 val, int mask) {
+ display_emulation_not_implemented("mseb");
+ return 0;
}
-static void emu_msebr (int rx, int ry, int mask) {
- printk("msebr emulation not implemented!\n");
+static int emu_msebr (int rx, int ry, int mask) {
+ display_emulation_not_implemented("msebr");
+ return 0;
}
-static void emu_mxbr (int rx, int ry) {
- printk("mxbr emulation not implemented!\n");
+static int emu_mxbr (int rx, int ry) {
+ display_emulation_not_implemented("mxbr");
+ return 0;
}
-static void emu_mxdb (int rx, __u64 val) {
- printk("mxdb emulation not implemented!\n");
+static int emu_mxdb (int rx, __u64 val) {
+ display_emulation_not_implemented("mxdb");
+ return 0;
}
-static void emu_mxdbr (int rx, int ry) {
- printk("mxdbr emulation not implemented!\n");
+static int emu_mxdbr (int rx, int ry) {
+ display_emulation_not_implemented("mxdbr");
+ return 0;
}
-static void emu_sdb (int rx, __u64 val) {
+static int emu_sdb (int rx, __u64 val) {
current->thread.fp_regs.fprs[rx].d = __subdf3(current->thread.fp_regs.fprs[rx].d,
val);
set_CC_sf(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_sdbr (int rx, int ry) {
+static int emu_sdbr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].d = __subdf3(current->thread.fp_regs.fprs[rx].d,
current->thread.fp_regs.fprs[ry].d);
set_CC_sf(current->thread.fp_regs.fprs[rx].d,0ULL);
+ return 0;
}
-static void emu_seb (int rx, __u32 val) {
+static int emu_seb (int rx, __u32 val) {
current->thread.fp_regs.fprs[rx].f = __subsf3(current->thread.fp_regs.fprs[rx].f,
val);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_sebr (int rx, int ry) {
+static int emu_sebr (int rx, int ry) {
current->thread.fp_regs.fprs[rx].f = __subsf3(current->thread.fp_regs.fprs[rx].f,
current->thread.fp_regs.fprs[ry].f);
set_CC_sf(current->thread.fp_regs.fprs[rx].f,0);
+ return 0;
}
-static void emu_sfpc (int rx, int ry) {
- printk("sfpc emulation not implemented!\n");
+static int emu_sfpc (int rx, int ry) {
+ __u32 val=current->thread.regs->gprs[rx];
+ if(val==0)
+ current->thread.fp_regs.fpc=val;
+ else
+ display_emulation_not_implemented("sfpc");
+ return 0;
}
-static void emu_sqdb (int rx, __u64 val) {
- printk("sqdb emulation not implemented!\n");
+static int emu_sqdb (int rx, __u64 val) {
+ display_emulation_not_implemented("sqdb");
+ return 0;
}
-static void emu_sqdbr (int rx, int ry) {
- printk("sqdbr emulation not implemented!\n");
+static int emu_sqdbr (int rx, int ry) {
+ display_emulation_not_implemented("sqdbr");
+ return 0;
}
-static void emu_sqeb (int rx, __u32 val) {
- printk("sqeb emulation not implemented!\n");
+static int emu_sqeb (int rx, __u32 val) {
+ display_emulation_not_implemented("sqeb");
+ return 0;
}
-static void emu_sqebr (int rx, int ry) {
- printk("sqebr emulation not implemented!\n");
+static int emu_sqebr (int rx, int ry) {
+ display_emulation_not_implemented("sqebr");
+ return 0;
}
-static void emu_sqxbr (int rx, int ry) {
- printk("sqxbr emulation not implemented!\n");
+static int emu_sqxbr (int rx, int ry) {
+ display_emulation_not_implemented("sqxbr");
+ return 0;
}
-static void emu_sxbr (int rx, int ry) {
- printk("sxbr emulation not implemented!\n");
+static int emu_sxbr (int rx, int ry) {
+ display_emulation_not_implemented("sxbr");
+ return 0;
}
-static void emu_tcdb (int rx, __u64 val) {
- printk("tcdb emulation not implemented!\n");
+static int emu_tcdb (int rx, __u64 val) {
+ display_emulation_not_implemented("tcdb");
+ return 0;
}
-static void emu_tceb (int rx, __u32 val) {
- printk("tceb emulation not implemented!\n");
+static int emu_tceb (int rx, __u32 val) {
+ display_emulation_not_implemented("tceb");
+ return 0;
}
-static void emu_tcxb (int rx, __u64 val) {
- printk("tcxb emulation not implemented!\n");
+static int emu_tcxb (int rx, __u64 val) {
+ display_emulation_not_implemented("tcxb");
+ return 0;
}
@@ -473,6 +616,7 @@
}
int math_emu_b3(__u8 *opcode, struct pt_regs * regs) {
+ int rc=0;
static const __u8 format_table[] = {
2, 2, 2, 2, 9, 1, 2, 1, 2, 2, 2, 2, 9, 2, 4, 4,
1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 3, 3,
@@ -538,84 +682,82 @@
emu_store_regd((opcode[3]>>4)&15);
emu_store_regd(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15);
- emu_load_regd((opcode[3]>>4)&15);
- emu_load_regd(opcode[3]&15);
- return 0;
+ emu_load_regd((opcode[3]>>4)&15);
+ emu_load_regd(opcode[3]&15);
+ return rc;
case 2: /* RRE format, float operation */
emu_store_rege((opcode[3]>>4)&15);
emu_store_rege(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15);
- emu_load_rege((opcode[3]>>4)&15);
- emu_load_rege(opcode[3]&15);
- return 0;
+ emu_load_rege((opcode[3]>>4)&15);
+ emu_load_rege(opcode[3]&15);
+ return rc;
case 3: /* RRF format, double operation */
emu_store_regd((opcode[3]>>4)&15);
emu_store_regd(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15,opcode[2]>>4);
- emu_load_regd((opcode[3]>>4)&15);
- emu_load_regd(opcode[3]&15);
- return 0;
+ emu_load_regd((opcode[3]>>4)&15);
+ emu_load_regd(opcode[3]&15);
+ return rc;
case 4: /* RRF format, float operation */
emu_store_rege((opcode[3]>>4)&15);
emu_store_rege(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15,opcode[2]>>4);
- emu_load_rege((opcode[3]>>4)&15);
- emu_load_rege(opcode[3]&15);
- return 0;
+ emu_load_rege((opcode[3]>>4)&15);
+ emu_load_rege(opcode[3]&15);
+ return rc;
case 5: /* RRE format, cefbr instruction */
emu_store_rege((opcode[3]>>4)&15);
/* call the emulation function */
- ((void (*)(int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15);
- emu_load_rege((opcode[3]>>4)&15);
- return 0;
+ emu_load_rege((opcode[3]>>4)&15);
+ return rc;
case 6: /* RRE format, cdfbr & cxfbr instruction */
emu_store_regd((opcode[3]>>4)&15);
/* call the emulation function */
- ((void (*)(int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15);
- emu_load_regd((opcode[3]>>4)&15);
- return 0;
- /* FIXME !! */
- return 0;
- case 7: /* RRF format, cfebr instruction */
+ emu_load_regd((opcode[3]>>4)&15);
+ return rc;
+ case 7: /* RRF format, cfebr instruction */
emu_store_rege(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15,opcode[2]>>4);
- return 0;
+ return rc;
case 8: /* RRF format, cfdbr & cfxbr instruction */
emu_store_regd(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15,opcode[2]>>4);
- return 0;
+ return rc;
case 9: /* RRE format, ldebr & mdebr instruction */
/* float store but double load */
emu_store_rege((opcode[3]>>4)&15);
emu_store_rege(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15);
- emu_load_regd((opcode[3]>>4)&15);
- return 0;
+ emu_load_regd((opcode[3]>>4)&15);
+ return rc;
case 10: /* RRE format, ledbr instruction */
/* double store but float load */
emu_store_regd((opcode[3]>>4)&15);
emu_store_regd(opcode[3]&15);
/* call the emulation function */
- ((void (*)(int, int))jump_table[opcode[1]])
+ rc=((int (*)(int, int))jump_table[opcode[1]])
(opcode[3]>>4,opcode[3]&15);
- emu_load_rege((opcode[3]>>4)&15);
- return 0;
+ emu_load_rege((opcode[3]>>4)&15);
+ return rc;
default:
return 1;
}
@@ -632,6 +774,8 @@
}
int math_emu_ed(__u8 *opcode, struct pt_regs * regs) {
+ int rc=0;
+
static const __u8 format_table[] = {
0, 0, 0, 0, 5, 1, 2, 1, 2, 2, 2, 2, 5, 2, 4, 4,
2, 1, 1, 0, 2, 1, 0, 2, 1, 1, 1, 1, 1, 1, 3, 3,
@@ -669,13 +813,12 @@
emu_store_regd((opcode[1]>>4)&15);
opc = *((__u32 *) opcode);
dxb = (__u64 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if copy_from_user fails ? */
- copy_from_user(&temp, dxb, 8);
+ mathemu_copy_from_user(&temp, dxb, 8);
/* call the emulation function */
- ((void (*)(int, __u64))jump_table[opcode[5]])
+ rc=((int (*)(int, __u64))jump_table[opcode[5]])
(opcode[1]>>4,temp);
- emu_load_regd((opcode[1]>>4)&15);
- return 0;
+ emu_load_regd((opcode[1]>>4)&15);
+ return rc;
}
case 2: /* RXE format, __u32 constant */ {
__u32 *dxb, temp;
@@ -684,13 +827,12 @@
emu_store_rege((opcode[1]>>4)&15);
opc = *((__u32 *) opcode);
dxb = (__u32 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if get_user fails ? */
- get_user(temp, dxb);
+ mathemu_get_user(temp, dxb);
/* call the emulation function */
- ((void (*)(int, __u32))jump_table[opcode[5]])
+ rc=((int (*)(int, __u32))jump_table[opcode[5]])
(opcode[1]>>4,temp);
- emu_load_rege((opcode[1]>>4)&15);
- return 0;
+ emu_load_rege((opcode[1]>>4)&15);
+ return rc;
}
case 3: /* RXF format, __u64 constant */ {
__u32 *dxb, temp;
@@ -699,13 +841,12 @@
emu_store_regd((opcode[1]>>4)&15);
opc = *((__u32 *) opcode);
dxb = (__u32 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if copy_from_user fails ? */
- copy_from_user(&temp, dxb, 8);
+ mathemu_copy_from_user(&temp, dxb, 8);
/* call the emulation function */
- ((void (*)(int, __u32, int))jump_table[opcode[5]])
+ rc=((int (*)(int, __u32, int))jump_table[opcode[5]])
(opcode[1]>>4,temp,opcode[4]>>4);
- emu_load_regd((opcode[1]>>4)&15);
- return 0;
+ emu_load_regd((opcode[1]>>4)&15);
+ return rc;
}
case 4: /* RXF format, __u32 constant */ {
__u32 *dxb, temp;
@@ -714,29 +855,27 @@
emu_store_rege((opcode[1]>>4)&15);
opc = *((__u32 *) opcode);
dxb = (__u32 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if get_user fails ? */
- get_user(temp, dxb);
+ mathemu_get_user(temp, dxb);
/* call the emulation function */
- ((void (*)(int, __u32, int))jump_table[opcode[5]])
+ rc=((int (*)(int, __u32, int))jump_table[opcode[5]])
(opcode[1]>>4,temp,opcode[4]>>4);
emu_load_rege((opcode[1]>>4)&15);
- return 0;
+ return rc;
}
case 5: /* RXE format, __u32 constant */
/* store_rege and load_regd */
- {
+ {
__u32 *dxb, temp;
__u32 opc;
emu_store_rege((opcode[1]>>4)&15);
opc = *((__u32 *) opcode);
dxb = (__u32 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if get_user fails ? */
- get_user(temp, dxb);
+ mathemu_get_user(temp, dxb);
/* call the emulation function */
- ((void (*)(int, __u32))jump_table[opcode[5]])
+ rc=((int (*)(int, __u32))jump_table[opcode[5]])
(opcode[1]>>4,temp);
emu_load_regd((opcode[1]>>4)&15);
- return 0;
+ return rc;
}
default:
return 1;
@@ -746,7 +885,7 @@
/*
* Emulate LDR Rx,Ry with Rx or Ry not in {0, 2, 4, 6}
*/
-void math_emu_ldr(__u8 *opcode) {
+int math_emu_ldr(__u8 *opcode) {
__u16 opc = *((__u16 *) opcode);
if ((opc & 0x0090) == 0) { /* test if rx in {0,2,4,6} */
@@ -772,12 +911,13 @@
current->thread.fp_regs.fprs[(opc&0x00f0)>>4] =
current->thread.fp_regs.fprs[opc&0x000f];
}
+ return 0;
}
/*
* Emulate LER Rx,Ry with Rx or Ry not in {0, 2, 4, 6}
*/
-void math_emu_ler(__u8 *opcode) {
+int math_emu_ler(__u8 *opcode) {
__u16 opc = *((__u16 *) opcode);
if ((opc & 0x0090) == 0) { /* test if rx in {0,2,4,6} */
@@ -803,61 +943,68 @@
current->thread.fp_regs.fprs[(opc&0x00f0)>>4] =
current->thread.fp_regs.fprs[opc&0x000f];
}
+ return 0;
}
/*
* Emulate LD R,D(X,B) with R not in {0, 2, 4, 6}
*/
-void math_emu_ld(__u8 *opcode, struct pt_regs * regs) {
+int math_emu_ld(__u8 *opcode, struct pt_regs * regs) {
__u32 opc = *((__u32 *) opcode);
__u64 *dxb;
dxb = (__u64 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if copy_from_user fails ? */
- copy_from_user(¤t->thread.fp_regs.fprs[(opc>>20)&15].d, dxb, 8);
+ mathemu_copy_from_user(¤t->thread.fp_regs.fprs[(opc>>20)&15].d, dxb, 8);
+ return 0;
}
/*
* Emulate LE R,D(X,B) with R not in {0, 2, 4, 6}
*/
-void math_emu_le(__u8 *opcode, struct pt_regs * regs) {
+int math_emu_le(__u8 *opcode, struct pt_regs * regs) {
__u32 opc = *((__u32 *) opcode);
__u32 *mem, *dxb;
dxb = (__u32 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if get_user fails ? */
mem = (__u32 *) (¤t->thread.fp_regs.fprs[(opc>>20)&15].f);
- get_user(mem[0], dxb);
+ mathemu_get_user(mem[0], dxb);
+ return 0;
}
/*
* Emulate STD R,D(X,B) with R not in {0, 2, 4, 6}
*/
-void math_emu_std(__u8 *opcode, struct pt_regs * regs) {
+int math_emu_std(__u8 *opcode, struct pt_regs * regs) {
__u32 opc = *((__u32 *) opcode);
__u64 *dxb;
dxb = (__u64 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if copy_to_user fails ? */
- copy_to_user(dxb, ¤t->thread.fp_regs.fprs[(opc>>20)&15].d, 8);
+ mathemu_copy_to_user(dxb, ¤t->thread.fp_regs.fprs[(opc>>20)&15].d, 8);
+ return 0;
}
/*
* Emulate STE R,D(X,B) with R not in {0, 2, 4, 6}
*/
-void math_emu_ste(__u8 *opcode, struct pt_regs * regs) {
+int math_emu_ste(__u8 *opcode, struct pt_regs * regs) {
__u32 opc = *((__u32 *) opcode);
__u32 *mem, *dxb;
dxb = (__u32 *) calc_addr(regs,opc>>16,opc>>12,opc);
- /* FIXME: how to react if put_user fails ? */
+ /* FIXME: how to react if mathemu_put_user fails ? */
mem = (__u32 *) (¤t->thread.fp_regs.fprs[(opc>>20)&15].f);
- put_user(mem[0], dxb);
+ mathemu_put_user(mem[0], dxb);
+ return 0;
}
/*
* Emulate LFPC D(B)
*/
int math_emu_lfpc(__u8 *opcode, struct pt_regs *regs) {
- /* FIXME: how to do that ?!? */
+ __u32 *dxb,temp;
+ __u32 opc = *((__u32 *) opcode);
+ dxb= (__u32 *) calc_addr(regs,0,opc>>12,opc);
+ mathemu_get_user(temp, dxb);
+ if(temp!=0)
+ display_emulation_not_implemented("lfpc");
return 0;
}
@@ -865,7 +1012,10 @@
* Emulate STFPC D(B)
*/
int math_emu_stfpc(__u8 *opcode, struct pt_regs *regs) {
- /* FIXME: how to do that ?!? */
+ __u32 *dxb;
+ __u32 opc = *((__u32 *) opcode);
+ dxb= (__u32 *) calc_addr(regs,0,opc>>12,opc);
+ mathemu_put_user(current->thread.fp_regs.fpc, dxb);
return 0;
}
@@ -874,6 +1024,7 @@
*/
int math_emu_srnm(__u8 *opcode, struct pt_regs *regs) {
/* FIXME: how to do that ?!? */
+ display_emulation_not_implemented("srnm");
return 0;
}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)