diff options
author | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-06-22 11:44:41 +0000 |
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committer | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-06-22 11:44:41 +0000 |
commit | e67888a7da3d2fcea87dadf723ba18f8e577734a (patch) | |
tree | 684fed14afa990587b66d17087b76aad237f6337 | |
parent | e3d8a9858ee1669c72a2ee58ead0d2d973eb4ab6 (diff) |
Document FPSCR usage, by Magnus Damm.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3004 c046a42c-6fe2-441c-8c8c-71466251a162
-rw-r--r-- | target-sh4/translate.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 5b35cf228e..b90d9b573a 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -647,7 +647,7 @@ void decode_opc(DisasContext * ctx) gen_op_movl_rN_T0(REG(B7_4)); gen_op_xor_T0_rN(REG(B11_8)); return; - case 0xf00c: /* fmov {F,D,X}Rm,{F,D,X}Rn */ + case 0xf00c: /* fmov {F,D,X}Rm,{F,D,X}Rn - FPSCR: Nothing */ if (ctx->fpscr & FPSCR_PR) { gen_op_fmov_drN_DT0(XREG(B7_4)); gen_op_fmov_DT0_drN(XREG(B11_8)); @@ -661,7 +661,7 @@ void decode_opc(DisasContext * ctx) gen_op_fmov_FT0_frN(FREG(B11_8)); } return; - case 0xf00a: /* fmov {F,D,X}Rm,@Rn */ + case 0xf00a: /* fmov {F,D,X}Rm,@Rn - FPSCR: Nothing */ if (ctx->fpscr & FPSCR_PR) { gen_op_fmov_drN_DT0(XREG(B7_4)); gen_op_movl_rN_T1(REG(B11_8)); @@ -678,7 +678,7 @@ void decode_opc(DisasContext * ctx) gen_op_stfl_FT0_T1(ctx); } return; - case 0xf008: /* fmov @Rm,{F,D,X}Rn */ + case 0xf008: /* fmov @Rm,{F,D,X}Rn - FPSCR: Nothing */ if (ctx->fpscr & FPSCR_PR) { gen_op_movl_rN_T0(REG(B7_4)); gen_op_ldfq_T0_DT0(ctx); @@ -695,7 +695,7 @@ void decode_opc(DisasContext * ctx) gen_op_fmov_FT0_frN(FREG(B11_8)); } return; - case 0xf009: /* fmov @Rm+,{F,D,X}Rn */ + case 0xf009: /* fmov @Rm+,{F,D,X}Rn - FPSCR: Nothing */ if (ctx->fpscr & FPSCR_PR) { gen_op_movl_rN_T0(REG(B7_4)); gen_op_ldfq_T0_DT0(ctx); @@ -715,7 +715,7 @@ void decode_opc(DisasContext * ctx) gen_op_inc4_rN(REG(B7_4)); } return; - case 0xf00b: /* fmov {F,D,X}Rm,@-Rn */ + case 0xf00b: /* fmov {F,D,X}Rm,@-Rn - FPSCR: Nothing */ if (ctx->fpscr & FPSCR_PR) { gen_op_dec8_rN(REG(B11_8)); gen_op_fmov_drN_DT0(XREG(B7_4)); @@ -735,7 +735,7 @@ void decode_opc(DisasContext * ctx) gen_op_stfl_FT0_T1(ctx); } return; - case 0xf006: /* fmov @(R0,Rm),{F,D,X}Rm */ + case 0xf006: /* fmov @(R0,Rm),{F,D,X}Rm - FPSCR: Nothing */ if (ctx->fpscr & FPSCR_PR) { gen_op_movl_rN_T0(REG(B7_4)); gen_op_add_rN_T0(REG(0)); @@ -755,7 +755,7 @@ void decode_opc(DisasContext * ctx) gen_op_fmov_FT0_frN(FREG(B11_8)); } return; - case 0xf007: /* fmov {F,D,X}Rn,@(R0,Rn) */ + case 0xf007: /* fmov {F,D,X}Rn,@(R0,Rn) - FPSCR: Nothing */ if (ctx->fpscr & FPSCR_PR) { gen_op_fmov_drN_DT0(XREG(B7_4)); gen_op_movl_rN_T1(REG(B11_8)); @@ -775,12 +775,12 @@ void decode_opc(DisasContext * ctx) gen_op_stfl_FT0_T1(ctx); } return; - case 0xf000: /* fadd Rm,Rn */ - case 0xf001: /* fsub Rm,Rn */ - case 0xf002: /* fmul Rm,Rn */ - case 0xf003: /* fdiv Rm,Rn */ - case 0xf004: /* fcmp/eq Rm,Rn */ - case 0xf005: /* fcmp/gt Rm,Rn */ + case 0xf000: /* fadd Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */ + case 0xf001: /* fsub Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */ + case 0xf002: /* fmul Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */ + case 0xf003: /* fdiv Rm,Rn - FPSCR: R[PR,Enable.O/U/I]/W[Cause,Flag] */ + case 0xf004: /* fcmp/eq Rm,Rn - FPSCR: R[PR,Enable.V]/W[Cause,Flag] */ + case 0xf005: /* fcmp/gt Rm,Rn - FPSCR: R[PR,Enable.V]/W[Cause,Flag] */ if (ctx->fpscr & FPSCR_PR) { if (ctx->opcode & 0x0110) break; /* illegal instruction */ @@ -1121,15 +1121,15 @@ void decode_opc(DisasContext * ctx) case 0x401b: /* tas.b @Rn */ gen_op_tasb_rN(REG(B11_8)); return; - case 0xf00d: /* fsts FPUL,FRn */ + case 0xf00d: /* fsts FPUL,FRn - FPSCR: Nothing */ gen_op_movl_fpul_FT0(); gen_op_fmov_FT0_frN(FREG(B11_8)); return; - case 0xf01d: /* flds FRm.FPUL */ + case 0xf01d: /* flds FRm,FPUL - FPSCR: Nothing */ gen_op_fmov_frN_FT0(FREG(B11_8)); gen_op_movl_FT0_fpul(); return; - case 0xf02d: /* float FPUL,FRn/DRn */ + case 0xf02d: /* float FPUL,FRn/DRn - FPSCR: R[PR,Enable.I]/W[Cause,Flag] */ if (ctx->fpscr & FPSCR_PR) { if (ctx->opcode & 0x0100) break; /* illegal instruction */ @@ -1141,7 +1141,7 @@ void decode_opc(DisasContext * ctx) gen_op_fmov_FT0_frN(FREG(B11_8)); } return; - case 0xf03d: /* ftrc FRm/DRm,FPUL */ + case 0xf03d: /* ftrc FRm/DRm,FPUL - FPSCR: R[PR,Enable.V]/W[Cause,Flag] */ if (ctx->fpscr & FPSCR_PR) { if (ctx->opcode & 0x0100) break; /* illegal instruction */ @@ -1153,14 +1153,14 @@ void decode_opc(DisasContext * ctx) gen_op_ftrc_FT(); } return; - case 0xf08d: /* fldi0 FRn */ + case 0xf08d: /* fldi0 FRn - FPSCR: R[PR] */ if (!(ctx->fpscr & FPSCR_PR)) { gen_op_movl_imm_T0(0); gen_op_fmov_T0_frN(FREG(B11_8)); return; } break; - case 0xf09d: /* fldi1 FRn */ + case 0xf09d: /* fldi1 FRn - FPSCR: R[PR] */ if (!(ctx->fpscr & FPSCR_PR)) { gen_op_movl_imm_T0(0x3f800000); gen_op_fmov_T0_frN(FREG(B11_8)); |