MIPS: math-emu: Add support for the MIPS R6 MIN{, A} FPU instruction

[linux-drm-fsl-dcu.git] / arch / mips / math-emu / cp1emu.c

diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index b65b4ea60232873d45db2b5e26f0967ad7b3122f..f397bdfd93fb18c376f7e0f3bfdd84148e63c574 100644 (file)
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -1815,6 +1815,30 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
                        break;
                }
 
+               case fmin_op: {
+                       union ieee754sp fs, ft;
+
+                       if (!cpu_has_mips_r6)
+                               return SIGILL;
+
+                       SPFROMREG(ft, MIPSInst_FT(ir));
+                       SPFROMREG(fs, MIPSInst_FS(ir));
+                       rv.s = ieee754sp_fmin(fs, ft);
+                       break;
+               }
+
+               case fmina_op: {
+                       union ieee754sp fs, ft;
+
+                       if (!cpu_has_mips_r6)
+                               return SIGILL;
+
+                       SPFROMREG(ft, MIPSInst_FT(ir));
+                       SPFROMREG(fs, MIPSInst_FS(ir));
+                       rv.s = ieee754sp_fmina(fs, ft);
+                       break;
+               }
+
                case fabs_op:
                        handler.u = ieee754sp_abs;
                        goto scopuop;
@@ -2085,6 +2109,30 @@ copcsr:
                        break;
                }
 
+               case fmin_op: {
+                       union ieee754dp fs, ft;
+
+                       if (!cpu_has_mips_r6)
+                               return SIGILL;
+
+                       DPFROMREG(ft, MIPSInst_FT(ir));
+                       DPFROMREG(fs, MIPSInst_FS(ir));
+                       rv.d = ieee754dp_fmin(fs, ft);
+                       break;
+               }
+
+               case fmina_op: {
+                       union ieee754dp fs, ft;
+
+                       if (!cpu_has_mips_r6)
+                               return SIGILL;
+
+                       DPFROMREG(ft, MIPSInst_FT(ir));
+                       DPFROMREG(fs, MIPSInst_FS(ir));
+                       rv.d = ieee754dp_fmina(fs, ft);
+                       break;
+               }
+
                case fabs_op:
                        handler.u = ieee754dp_abs;
                        goto dcopuop;