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-rw-r--r--arch/sparc/math-emu/Makefile2
-rw-r--r--arch/sparc/math-emu/math_32.c2
-rw-r--r--arch/sparc/math-emu/math_64.c25
-rw-r--r--arch/sparc/math-emu/sfp-util_32.h20
-rw-r--r--arch/sparc/math-emu/sfp-util_64.h12
5 files changed, 35 insertions, 26 deletions
diff --git a/arch/sparc/math-emu/Makefile b/arch/sparc/math-emu/Makefile
index b9085ecbb27..825dbee94d8 100644
--- a/arch/sparc/math-emu/Makefile
+++ b/arch/sparc/math-emu/Makefile
@@ -2,7 +2,7 @@
# Makefile for the FPU instruction emulation.
#
-# supress all warnings - as math.c produces a lot!
+# suppress all warnings - as math.c produces a lot!
ccflags-y := -w
obj-y := math_$(BITS).o
diff --git a/arch/sparc/math-emu/math_32.c b/arch/sparc/math-emu/math_32.c
index a3fccde894e..aa4d55b0bdf 100644
--- a/arch/sparc/math-emu/math_32.c
+++ b/arch/sparc/math-emu/math_32.c
@@ -164,7 +164,7 @@ int do_mathemu(struct pt_regs *regs, struct task_struct *fpt)
int retcode = 0; /* assume all succeed */
unsigned long insn;
- perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+ perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
#ifdef DEBUG_MATHEMU
printk("In do_mathemu()... pc is %08lx\n", regs->pc);
diff --git a/arch/sparc/math-emu/math_64.c b/arch/sparc/math-emu/math_64.c
index 56d2c44747b..034aadbff03 100644
--- a/arch/sparc/math-emu/math_64.c
+++ b/arch/sparc/math-emu/math_64.c
@@ -16,6 +16,7 @@
#include <asm/fpumacro.h>
#include <asm/ptrace.h>
#include <asm/uaccess.h>
+#include <asm/cacheflush.h>
#include "sfp-util_64.h"
#include <math-emu/soft-fp.h>
@@ -162,7 +163,7 @@ typedef union {
u64 q[2];
} *argp;
-int do_mathemu(struct pt_regs *regs, struct fpustate *f)
+int do_mathemu(struct pt_regs *regs, struct fpustate *f, bool illegal_insn_trap)
{
unsigned long pc = regs->tpc;
unsigned long tstate = regs->tstate;
@@ -184,7 +185,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
if (tstate & TSTATE_PRIV)
die_if_kernel("unfinished/unimplemented FPop from kernel", regs);
- perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
+ perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
@@ -217,7 +218,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
case FSQRTS: {
unsigned long x = current_thread_info()->xfsr[0];
- x = (x >> 14) & 0xf;
+ x = (x >> 14) & 0x7;
TYPE(x,1,1,1,1,0,0);
break;
}
@@ -225,7 +226,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
case FSQRTD: {
unsigned long x = current_thread_info()->xfsr[0];
- x = (x >> 14) & 0xf;
+ x = (x >> 14) & 0x7;
TYPE(x,2,1,2,1,0,0);
break;
}
@@ -319,7 +320,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
XR = 0;
else if (freg < 16)
XR = regs->u_regs[freg];
- else if (test_thread_flag(TIF_32BIT)) {
+ else if (!test_thread_64bit_stack(regs->u_regs[UREG_FP])) {
struct reg_window32 __user *win32;
flushw_user ();
win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
@@ -356,9 +357,17 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
if (type) {
argp rs1 = NULL, rs2 = NULL, rd = NULL;
- freg = (current_thread_info()->xfsr[0] >> 14) & 0xf;
- if (freg != (type >> 9))
- goto err;
+ /* Starting with UltraSPARC-T2, the cpu does not set the FP Trap
+ * Type field in the %fsr to unimplemented_FPop. Nor does it
+ * use the fp_exception_other trap. Instead it signals an
+ * illegal instruction and leaves the FP trap type field of
+ * the %fsr unchanged.
+ */
+ if (!illegal_insn_trap) {
+ int ftt = (current_thread_info()->xfsr[0] >> 14) & 0x7;
+ if (ftt != (type >> 9))
+ goto err;
+ }
current_thread_info()->xfsr[0] &= ~0x1c000;
freg = ((insn >> 14) & 0x1f);
switch (type & 0x3) {
diff --git a/arch/sparc/math-emu/sfp-util_32.h b/arch/sparc/math-emu/sfp-util_32.h
index d1b2aff3c25..bb587d5f3d9 100644
--- a/arch/sparc/math-emu/sfp-util_32.h
+++ b/arch/sparc/math-emu/sfp-util_32.h
@@ -4,20 +4,20 @@
#include <asm/byteorder.h>
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
- __asm__ ("addcc %r4,%5,%1\n\t" \
+ __asm__ ("addcc %r4,%5,%1\n\t" \
"addx %r2,%3,%0\n" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "%rJ" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"%rJ" ((USItype)(al)), \
"rI" ((USItype)(bl)) \
: "cc")
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
- __asm__ ("subcc %r4,%5,%1\n\t" \
+ __asm__ ("subcc %r4,%5,%1\n\t" \
"subx %r2,%3,%0\n" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "rJ" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"rJ" ((USItype)(al)), \
@@ -65,8 +65,8 @@
"mulscc %%g1,0,%%g1\n\t" \
"add %%g1,%%g2,%0\n\t" \
"rd %%y,%1\n" \
- : "=r" ((USItype)(w1)), \
- "=r" ((USItype)(w0)) \
+ : "=r" (w1), \
+ "=r" (w0) \
: "%rI" ((USItype)(u)), \
"r" ((USItype)(v)) \
: "%g1", "%g2", "cc")
@@ -98,8 +98,8 @@
"sub %1,%2,%1\n\t" \
"3: xnor %0,0,%0\n\t" \
"! End of inline udiv_qrnnd\n" \
- : "=&r" ((USItype)(q)), \
- "=&r" ((USItype)(r)) \
+ : "=&r" (q), \
+ "=&r" (r) \
: "r" ((USItype)(d)), \
"1" ((USItype)(n1)), \
"0" ((USItype)(n0)) : "%g1", "cc")
diff --git a/arch/sparc/math-emu/sfp-util_64.h b/arch/sparc/math-emu/sfp-util_64.h
index 425d3cf01af..51320a861cc 100644
--- a/arch/sparc/math-emu/sfp-util_64.h
+++ b/arch/sparc/math-emu/sfp-util_64.h
@@ -17,8 +17,8 @@
"bcs,a,pn %%xcc, 1f\n\t" \
"add %0, 1, %0\n" \
"1:" \
- : "=r" ((UDItype)(sh)), \
- "=&r" ((UDItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "r" ((UDItype)(ah)), \
"r" ((UDItype)(bh)), \
"r" ((UDItype)(al)), \
@@ -31,8 +31,8 @@
"bcs,a,pn %%xcc, 1f\n\t" \
"sub %0, 1, %0\n" \
"1:" \
- : "=r" ((UDItype)(sh)), \
- "=&r" ((UDItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "r" ((UDItype)(ah)), \
"r" ((UDItype)(bh)), \
"r" ((UDItype)(al)), \
@@ -64,8 +64,8 @@
"sllx %3,32,%3\n\t" \
"add %1,%3,%1\n\t" \
"add %5,%2,%0" \
- : "=r" ((UDItype)(wh)), \
- "=&r" ((UDItype)(wl)), \
+ : "=r" (wh), \
+ "=&r" (wl), \
"=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \
: "r" ((UDItype)(u)), \
"r" ((UDItype)(v)) \
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 20:20:17 +0000