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| author | Paul Brook <paul@codesourcery.com> | 2009-11-19 16:45:20 +0000 |
|---|---|---|
| committer | Paul Brook <paul@codesourcery.com> | 2009-11-19 16:45:20 +0000 |
| commit | 031470b8c0bb1c08d9c363543d7314c93e192e49 (patch) | |
| tree | 937055725aba7c29b402b927066333e2f8debf61 /target-arm/translate.c | |
| parent | 45034afe3f06183a448c72b95a9de40c47cbf262 (diff) | |
| download | qemu-031470b8c0bb1c08d9c363543d7314c93e192e49.tar.gz qemu-031470b8c0bb1c08d9c363543d7314c93e192e49.tar.bz2 qemu-031470b8c0bb1c08d9c363543d7314c93e192e49.zip | |
ARM FP16 support
Implement the ARM VFP half precision floating point extensions.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Diffstat (limited to 'target-arm/translate.c')
| -rw-r--r-- | target-arm/translate.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index 57845662ae..a002f7e029 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -2974,6 +2974,47 @@ static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn) case 3: /* sqrt */ gen_vfp_sqrt(dp); break; + case 4: /* vcvtb.f32.f16 */ + if (!arm_feature(env, ARM_FEATURE_VFP_FP16)) + return 1; + tmp = gen_vfp_mrs(); + tcg_gen_ext16u_i32(tmp, tmp); + gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp, cpu_env); + dead_tmp(tmp); + break; + case 5: /* vcvtt.f32.f16 */ + if (!arm_feature(env, ARM_FEATURE_VFP_FP16)) + return 1; + tmp = gen_vfp_mrs(); + tcg_gen_shri_i32(tmp, tmp, 16); + gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp, cpu_env); + dead_tmp(tmp); + break; + case 6: /* vcvtb.f16.f32 */ + if (!arm_feature(env, ARM_FEATURE_VFP_FP16)) + return 1; + tmp = new_tmp(); + gen_helper_vfp_fcvt_f32_to_f16(tmp, cpu_F0s, cpu_env); + gen_mov_F0_vreg(0, rd); + tmp2 = gen_vfp_mrs(); + tcg_gen_andi_i32(tmp2, tmp2, 0xffff0000); + tcg_gen_or_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + gen_vfp_msr(tmp); + break; + case 7: /* vcvtt.f16.f32 */ + if (!arm_feature(env, ARM_FEATURE_VFP_FP16)) + return 1; + tmp = new_tmp(); + gen_helper_vfp_fcvt_f32_to_f16(tmp, cpu_F0s, cpu_env); + tcg_gen_shli_i32(tmp, tmp, 16); + gen_mov_F0_vreg(0, rd); + tmp2 = gen_vfp_mrs(); + tcg_gen_ext16u_i32(tmp2, tmp2); + tcg_gen_or_i32(tmp, tmp, tmp2); + dead_tmp(tmp2); + gen_vfp_msr(tmp); + break; case 8: /* cmp */ gen_vfp_cmp(dp); break; @@ -5328,6 +5369,50 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) neon_store_reg64(cpu_V0, rd + pass); } break; + case 44: /* VCVT.F16.F32 */ + if (!arm_feature(env, ARM_FEATURE_VFP_FP16)) + return 1; + tmp = new_tmp(); + tmp2 = new_tmp(); + tcg_gen_ld_f32(cpu_F0s, cpu_env, neon_reg_offset(rm, 0)); + gen_helper_vfp_fcvt_f32_to_f16(tmp, cpu_F0s, cpu_env); + tcg_gen_ld_f32(cpu_F0s, cpu_env, neon_reg_offset(rm, 1)); + gen_helper_vfp_fcvt_f32_to_f16(tmp2, cpu_F0s, cpu_env); + tcg_gen_shli_i32(tmp2, tmp2, 16); + tcg_gen_or_i32(tmp2, tmp2, tmp); + tcg_gen_ld_f32(cpu_F0s, cpu_env, neon_reg_offset(rm, 2)); + gen_helper_vfp_fcvt_f32_to_f16(tmp, cpu_F0s, cpu_env); + tcg_gen_ld_f32(cpu_F0s, cpu_env, neon_reg_offset(rm, 3)); + neon_store_reg(rd, 0, tmp2); + tmp2 = new_tmp(); + gen_helper_vfp_fcvt_f32_to_f16(tmp2, cpu_F0s, cpu_env); + tcg_gen_shli_i32(tmp2, tmp2, 16); + tcg_gen_or_i32(tmp2, tmp2, tmp); + neon_store_reg(rd, 1, tmp2); + dead_tmp(tmp); + break; + case 46: /* VCVT.F32.F16 */ + if (!arm_feature(env, ARM_FEATURE_VFP_FP16)) + return 1; + tmp3 = new_tmp(); + tmp = neon_load_reg(rm, 0); + tmp2 = neon_load_reg(rm, 1); + tcg_gen_ext16u_i32(tmp3, tmp); + gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp3, cpu_env); + tcg_gen_st_f32(cpu_F0s, cpu_env, neon_reg_offset(rd, 0)); + tcg_gen_shri_i32(tmp3, tmp, 16); + gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp3, cpu_env); + tcg_gen_st_f32(cpu_F0s, cpu_env, neon_reg_offset(rd, 1)); + dead_tmp(tmp); + tcg_gen_ext16u_i32(tmp3, tmp2); + gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp3, cpu_env); + tcg_gen_st_f32(cpu_F0s, cpu_env, neon_reg_offset(rd, 2)); + tcg_gen_shri_i32(tmp3, tmp2, 16); + gen_helper_vfp_fcvt_f16_to_f32(cpu_F0s, tmp3, cpu_env); + tcg_gen_st_f32(cpu_F0s, cpu_env, neon_reg_offset(rd, 3)); + dead_tmp(tmp2); + dead_tmp(tmp3); + break; default: elementwise: for (pass = 0; pass < (q ? 4 : 2); pass++) { |