diff options
| author | Markos Chandras <markos.chandras@imgtec.com> | 2015-08-13 09:56:33 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-09-03 12:08:14 +0200 |
| commit | 400bd2e41393a783e0532321fdb369d2cc15ea26 (patch) | |
| tree | b076f48638fe9a5f104a33b28e57e5ecf9246d7a /arch/mips/math-emu | |
| parent | 83d43305a1df2aa2976e3ccf012e4cf0dc29673d (diff) | |
| download | linux-400bd2e41393a783e0532321fdb369d2cc15ea26.tar.bz2 | |
MIPS: math-emu: Add support for the MIPS R6 RINT FPU instruction
MIPS R6 introduced the following instruction:
Floating-Point Round to Integral
Scalar floating-point round to integral floating point value.
RINT.fmt: FPR[fd] = round_int(FPR[fs])
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10958/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu')
| -rw-r--r-- | arch/mips/math-emu/cp1emu.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index 54964b372992..a348cbefe4a8 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -1791,6 +1791,18 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx, break; } + case frint_op: { + union ieee754sp fs; + + if (!cpu_has_mips_r6) + return SIGILL; + + SPFROMREG(fs, MIPSInst_FS(ir)); + rv.l = ieee754sp_tlong(fs); + rv.s = ieee754sp_flong(rv.l); + goto copcsr; + } + case fabs_op: handler.u = ieee754sp_abs; goto scopuop; @@ -2037,6 +2049,18 @@ copcsr: break; } + case frint_op: { + union ieee754dp fs; + + if (!cpu_has_mips_r6) + return SIGILL; + + DPFROMREG(fs, MIPSInst_FS(ir)); + rv.l = ieee754dp_tlong(fs); + rv.d = ieee754dp_flong(rv.l); + goto copcsr; + } + case fabs_op: handler.u = ieee754dp_abs; goto dcopuop; |