diff options
| 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 | 17075f10ff9e2c8bd59ecbf9569421e437707e43 (patch) | |
| tree | 0efd45cba8832ac6ff5a484189183dd4a305a714 | |
| parent | af8c2bde4b4d4111e5bf49417b74069ce8750435 (diff) | |
target-sh4: add ftrv instruction
Add the ftrv XMTRX,FVn instruction, which computes the 4-row x 4-column
matrix XMTRX by the 4-dimensional vector FVn.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| -rw-r--r-- | target-sh4/helper.h | 1 | ||||
| -rw-r--r-- | target-sh4/op_helper.c | 26 | ||||
| -rw-r--r-- | target-sh4/translate.c | 11 |
3 files changed, 38 insertions, 0 deletions
diff --git a/target-sh4/helper.h b/target-sh4/helper.h index 544031c3e5..4e595c87f8 100644 --- a/target-sh4/helper.h +++ b/target-sh4/helper.h @@ -50,5 +50,6 @@ 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) +DEF_HELPER_1(ftrv, void, i32) #include "def-helper.h" diff --git a/target-sh4/op_helper.c b/target-sh4/op_helper.c index 030f60d5a2..525b0609cc 100644 --- a/target-sh4/op_helper.c +++ b/target-sh4/op_helper.c @@ -802,3 +802,29 @@ void helper_fipr(uint32_t m, uint32_t n) env->fregs[bank + n + 3] = r; } + +void helper_ftrv(uint32_t n) +{ + int bank_matrix, bank_vector; + int i, j; + float32 r[4]; + float32 p; + + bank_matrix = (env->sr & FPSCR_FR) ? 0 : 16; + bank_vector = (env->sr & FPSCR_FR) ? 16 : 0; + set_float_exception_flags(0, &env->fp_status); + for (i = 0 ; i < 4 ; i++) { + r[i] = float32_zero; + for (j = 0 ; j < 4 ; j++) { + p = float32_mul(env->fregs[bank_matrix + 4 * j + i], + env->fregs[bank_vector + j], + &env->fp_status); + r[i] = float32_add(r[i], p, &env->fp_status); + } + } + update_fpscr(GETPC()); + + for (i = 0 ; i < 4 ; i++) { + env->fregs[bank_vector + i] = r[i]; + } +} diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 557550f8e1..65b6ea413c 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -1871,6 +1871,17 @@ static void _decode_opc(DisasContext * ctx) return; } break; + case 0xf0fd: /* ftrv XMTRX,FVn */ + CHECK_FPU_ENABLED + if ((ctx->opcode & 0x0300) == 0x0100 && + (ctx->fpscr & FPSCR_PR) == 0) { + TCGv n; + n = tcg_const_i32((ctx->opcode >> 18) & 3); + gen_helper_ftrv(n); + tcg_temp_free(n); + return; + } + break; } #if 0 fprintf(stderr, "unknown instruction 0x%04x at pc 0x%08x\n", |