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authorRandy Dunlap <rdunlap@infradead.org>2021-10-05 02:19:12 +0200
committerRich Felker <dalias@libc.org>2021-10-27 22:51:16 +0200
commite25c252a9b033523c626f039d4b9a304f12f6775 (patch)
treec61f1d06e33d302137eac06312e3a3cbe0b820e4 /arch/sh
parentsh: fix kconfig unmet dependency warning for FRAME_POINTER (diff)
downloadlinux-e25c252a9b033523c626f039d4b9a304f12f6775.tar.xz
linux-e25c252a9b033523c626f039d4b9a304f12f6775.zip
sh: math-emu: drop unused functions
Delete ieee_fpe_handler() since it is not used. After that is done, delete denormal_to_double() since it is not used: .../arch/sh/math-emu/math.c:505:12: error: 'ieee_fpe_handler' defined but not used [-Werror=unused-function] 505 | static int ieee_fpe_handler(struct pt_regs *regs) .../arch/sh/math-emu/math.c:477:13: error: 'denormal_to_double' defined but not used [-Werror=unused-function] 477 | static void denormal_to_double(struct sh_fpu_soft_struct *fpu, int n) Fixes: 7caf62de25554da3 ("sh: remove unused do_fpu_error") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Takashi YOSHII <takasi-y@ops.dti.ne.jp> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/math-emu/math.c103
1 files changed, 0 insertions, 103 deletions
diff --git a/arch/sh/math-emu/math.c b/arch/sh/math-emu/math.c
index 3495a48b7713..9e0f4edbb525 100644
--- a/arch/sh/math-emu/math.c
+++ b/arch/sh/math-emu/math.c
@@ -468,109 +468,6 @@ static int fpu_emulate(u16 code, struct sh_fpu_soft_struct *fregs, struct pt_reg
}
/**
- * denormal_to_double - Given denormalized float number,
- * store double float
- *
- * @fpu: Pointer to sh_fpu_soft structure
- * @n: Index to FP register
- */
-static void denormal_to_double(struct sh_fpu_soft_struct *fpu, int n)
-{
- unsigned long du, dl;
- unsigned long x = fpu->fpul;
- int exp = 1023 - 126;
-
- if (x != 0 && (x & 0x7f800000) == 0) {
- du = (x & 0x80000000);
- while ((x & 0x00800000) == 0) {
- x <<= 1;
- exp--;
- }
- x &= 0x007fffff;
- du |= (exp << 20) | (x >> 3);
- dl = x << 29;
-
- fpu->fp_regs[n] = du;
- fpu->fp_regs[n+1] = dl;
- }
-}
-
-/**
- * ieee_fpe_handler - Handle denormalized number exception
- *
- * @regs: Pointer to register structure
- *
- * Returns 1 when it's handled (should not cause exception).
- */
-static int ieee_fpe_handler(struct pt_regs *regs)
-{
- unsigned short insn = *(unsigned short *)regs->pc;
- unsigned short finsn;
- unsigned long nextpc;
- int nib[4] = {
- (insn >> 12) & 0xf,
- (insn >> 8) & 0xf,
- (insn >> 4) & 0xf,
- insn & 0xf};
-
- if (nib[0] == 0xb ||
- (nib[0] == 0x4 && nib[2] == 0x0 && nib[3] == 0xb)) /* bsr & jsr */
- regs->pr = regs->pc + 4;
-
- if (nib[0] == 0xa || nib[0] == 0xb) { /* bra & bsr */
- nextpc = regs->pc + 4 + ((short) ((insn & 0xfff) << 4) >> 3);
- finsn = *(unsigned short *) (regs->pc + 2);
- } else if (nib[0] == 0x8 && nib[1] == 0xd) { /* bt/s */
- if (regs->sr & 1)
- nextpc = regs->pc + 4 + ((char) (insn & 0xff) << 1);
- else
- nextpc = regs->pc + 4;
- finsn = *(unsigned short *) (regs->pc + 2);
- } else if (nib[0] == 0x8 && nib[1] == 0xf) { /* bf/s */
- if (regs->sr & 1)
- nextpc = regs->pc + 4;
- else
- nextpc = regs->pc + 4 + ((char) (insn & 0xff) << 1);
- finsn = *(unsigned short *) (regs->pc + 2);
- } else if (nib[0] == 0x4 && nib[3] == 0xb &&
- (nib[2] == 0x0 || nib[2] == 0x2)) { /* jmp & jsr */
- nextpc = regs->regs[nib[1]];
- finsn = *(unsigned short *) (regs->pc + 2);
- } else if (nib[0] == 0x0 && nib[3] == 0x3 &&
- (nib[2] == 0x0 || nib[2] == 0x2)) { /* braf & bsrf */
- nextpc = regs->pc + 4 + regs->regs[nib[1]];
- finsn = *(unsigned short *) (regs->pc + 2);
- } else if (insn == 0x000b) { /* rts */
- nextpc = regs->pr;
- finsn = *(unsigned short *) (regs->pc + 2);
- } else {
- nextpc = regs->pc + 2;
- finsn = insn;
- }
-
- if ((finsn & 0xf1ff) == 0xf0ad) { /* fcnvsd */
- struct task_struct *tsk = current;
-
- if ((tsk->thread.xstate->softfpu.fpscr & (1 << 17))) {
- /* FPU error */
- denormal_to_double (&tsk->thread.xstate->softfpu,
- (finsn >> 8) & 0xf);
- tsk->thread.xstate->softfpu.fpscr &=
- ~(FPSCR_CAUSE_MASK | FPSCR_FLAG_MASK);
- task_thread_info(tsk)->status |= TS_USEDFPU;
- } else {
- force_sig_fault(SIGFPE, FPE_FLTINV,
- (void __user *)regs->pc);
- }
-
- regs->pc = nextpc;
- return 1;
- }
-
- return 0;
-}
-
-/**
* fpu_init - Initialize FPU registers
* @fpu: Pointer to software emulated FPU registers.
*/