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| author | Aurelien Jarno <aurelien@aurel32.net> | 2011-01-14 20:39:18 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-01-14 20:39:18 +0100 |
| commit | af8c2bde4b4d4111e5bf49417b74069ce8750435 (patch) | |
| tree | 79fc99ba37c57a64a3a7800399e3c96849724ae9 | |
| parent | 21829e9b39e3aa0874931aa6981f258c82f41715 (diff) | |
| download | qemu-af8c2bde4b4d4111e5bf49417b74069ce8750435.zip qemu-af8c2bde4b4d4111e5bf49417b74069ce8750435.tar.gz qemu-af8c2bde4b4d4111e5bf49417b74069ce8750435.tar.bz2 | |
target-sh4: add fipr instruction
Add the fipr FVm,FVn instruction, which computes the inner products of
a 4-dimensional single precision floating-point vector.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| -rw-r--r-- | target-sh4/helper.h | 1 | ||||
| -rw-r--r-- | target-sh4/op_helper.c | 20 | ||||
| -rw-r--r-- | target-sh4/translate.c | 12 |
3 files changed, 33 insertions, 0 deletions
diff --git a/target-sh4/helper.h b/target-sh4/helper.h index 4b2fcdd..544031c 100644 --- a/target-sh4/helper.h +++ b/target-sh4/helper.h @@ -49,5 +49,6 @@ DEF_HELPER_1(fsqrt_FT, i32, i32) DEF_HELPER_1(fsqrt_DT, i64, i64) DEF_HELPER_1(ftrc_FT, i32, i32) DEF_HELPER_1(ftrc_DT, i32, i64) +DEF_HELPER_2(fipr, void, i32, i32) #include "def-helper.h" diff --git a/target-sh4/op_helper.c b/target-sh4/op_helper.c index aea0eb1..030f60d 100644 --- a/target-sh4/op_helper.c +++ b/target-sh4/op_helper.c @@ -782,3 +782,23 @@ uint32_t helper_ftrc_DT(uint64_t t0) update_fpscr(GETPC()); return ret; } + +void helper_fipr(uint32_t m, uint32_t n) +{ + int bank, i; + float32 r, p; + + bank = (env->sr & FPSCR_FR) ? 16 : 0; + r = float32_zero; + set_float_exception_flags(0, &env->fp_status); + + for (i = 0 ; i < 4 ; i++) { + p = float32_mul(env->fregs[bank + m + i], + env->fregs[bank + n + i], + &env->fp_status); + r = float32_add(r, p, &env->fp_status); + } + update_fpscr(GETPC()); + + env->fregs[bank + n + 3] = r; +} diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 8b2f1fc..557550f 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -1859,6 +1859,18 @@ static void _decode_opc(DisasContext * ctx) tcg_temp_free_i64(fp); } return; + case 0xf0ed: /* fipr FVm,FVn */ + CHECK_FPU_ENABLED + if ((ctx->fpscr & FPSCR_PR) == 0) { + TCGv m, n; + m = tcg_const_i32((ctx->opcode >> 16) & 3); + n = tcg_const_i32((ctx->opcode >> 18) & 3); + gen_helper_fipr(m, n); + tcg_temp_free(m); + tcg_temp_free(n); + return; + } + break; } #if 0 fprintf(stderr, "unknown instruction 0x%04x at pc 0x%08x\n", |