haraldwolff/qemu-patch-raspberry4
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target-sh4: fix 64-bit fmov to/from memory

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When loading/storing a register pair, the even-numbered register
always maps to the low 32 bits of memory independently of target
endian configuration.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5773 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-11-22 10:09:27 +00:00
parent 64adab3fcb
commit 11bb09f1be
1 changed files with 33 additions and 29 deletions
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62
target-sh4/translate.c
View file

@ -991,31 +991,37 @@ static void _decode_opc(DisasContext * ctx)
return;
case 0xf00a: /* fmov {F,D,X}Rm,@Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
TCGv_i64 fp = tcg_temp_new_i64();
gen_load_fpr64(fp, XREG(B7_4));
tcg_gen_qemu_st64(fp, REG(B11_8), ctx->memidx);
tcg_temp_free_i64(fp);
TCGv addr_hi = tcg_temp_new();
int fr = XREG(B7_4);
tcg_gen_addi_i32(addr_hi, REG(B11_8), 4);
tcg_gen_qemu_st32(cpu_fregs[fr ], REG(B11_8), ctx->memidx);
tcg_gen_qemu_st32(cpu_fregs[fr+1], addr_hi, ctx->memidx);
tcg_temp_free(addr_hi);
} else {
tcg_gen_qemu_st32(cpu_fregs[FREG(B7_4)], REG(B11_8), ctx->memidx);
}
return;
case 0xf008: /* fmov @Rm,{F,D,X}Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
TCGv_i64 fp = tcg_temp_new_i64();
tcg_gen_qemu_ld64(fp, REG(B7_4), ctx->memidx);
gen_store_fpr64(fp, XREG(B11_8));
tcg_temp_free_i64(fp);
TCGv addr_hi = tcg_temp_new();
int fr = XREG(B11_8);
tcg_gen_addi_i32(addr_hi, REG(B7_4), 4);
tcg_gen_qemu_ld32u(cpu_fregs[fr ], REG(B7_4), ctx->memidx);
tcg_gen_qemu_ld32u(cpu_fregs[fr+1], addr_hi, ctx->memidx);
tcg_temp_free(addr_hi);
} else {
tcg_gen_qemu_ld32u(cpu_fregs[FREG(B11_8)], REG(B7_4), ctx->memidx);
}
return;
case 0xf009: /* fmov @Rm+,{F,D,X}Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
TCGv_i64 fp = tcg_temp_new_i64();
tcg_gen_qemu_ld64(fp, REG(B7_4), ctx->memidx);
gen_store_fpr64(fp, XREG(B11_8));
tcg_temp_free_i64(fp);
tcg_gen_addi_i32(REG(B7_4),REG(B7_4), 8);
TCGv addr_hi = tcg_temp_new();
int fr = XREG(B11_8);
tcg_gen_addi_i32(addr_hi, REG(B7_4), 4);
tcg_gen_qemu_ld32u(cpu_fregs[fr ], REG(B7_4), ctx->memidx);
tcg_gen_qemu_ld32u(cpu_fregs[fr+1], addr_hi, ctx->memidx);
tcg_gen_addi_i32(REG(B7_4), REG(B7_4), 8);
tcg_temp_free(addr_hi);
} else {
tcg_gen_qemu_ld32u(cpu_fregs[FREG(B11_8)], REG(B7_4), ctx->memidx);
tcg_gen_addi_i32(REG(B7_4), REG(B7_4), 4);
@ -1023,16 +1029,14 @@ static void _decode_opc(DisasContext * ctx)
return;
case 0xf00b: /* fmov {F,D,X}Rm,@-Rn - FPSCR: Nothing */
if (ctx->fpscr & FPSCR_SZ) {
TCGv addr;
TCGv_i64 fp;
addr = tcg_temp_new();
TCGv addr = tcg_temp_new_i32();
int fr = XREG(B7_4);
tcg_gen_subi_i32(addr, REG(B11_8), 4);
tcg_gen_qemu_st32(cpu_fregs[fr+1], addr, ctx->memidx);
tcg_gen_subi_i32(addr, REG(B11_8), 8);
fp = tcg_temp_new_i64();
gen_load_fpr64(fp, XREG(B7_4));
tcg_gen_qemu_st64(fp, addr, ctx->memidx);
tcg_temp_free_i64(fp);
tcg_gen_qemu_st32(cpu_fregs[fr ], addr, ctx->memidx);
tcg_gen_mov_i32(REG(B11_8), addr);
tcg_temp_free(addr);
tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 8);
} else {
TCGv addr;
addr = tcg_temp_new_i32();
@ -1047,10 +1051,10 @@ static void _decode_opc(DisasContext * ctx)
TCGv addr = tcg_temp_new_i32();
tcg_gen_add_i32(addr, REG(B7_4), REG(0));
if (ctx->fpscr & FPSCR_SZ) {
TCGv_i64 fp = tcg_temp_new_i64();
tcg_gen_qemu_ld64(fp, addr, ctx->memidx);
gen_store_fpr64(fp, XREG(B11_8));
tcg_temp_free_i64(fp);
int fr = XREG(B11_8);
tcg_gen_qemu_ld32u(cpu_fregs[fr ], addr, ctx->memidx);
tcg_gen_addi_i32(addr, addr, 4);
tcg_gen_qemu_ld32u(cpu_fregs[fr+1], addr, ctx->memidx);
} else {
tcg_gen_qemu_ld32u(cpu_fregs[FREG(B11_8)], addr, ctx->memidx);
}
@ -1062,10 +1066,10 @@ static void _decode_opc(DisasContext * ctx)
TCGv addr = tcg_temp_new();
tcg_gen_add_i32(addr, REG(B11_8), REG(0));
if (ctx->fpscr & FPSCR_SZ) {
TCGv_i64 fp = tcg_temp_new_i64();
gen_load_fpr64(fp, XREG(B7_4));
tcg_gen_qemu_st64(fp, addr, ctx->memidx);
tcg_temp_free_i64(fp);
int fr = XREG(B7_4);
tcg_gen_qemu_ld32u(cpu_fregs[fr ], addr, ctx->memidx);
tcg_gen_addi_i32(addr, addr, 4);
tcg_gen_qemu_ld32u(cpu_fregs[fr+1], addr, ctx->memidx);
} else {
tcg_gen_qemu_st32(cpu_fregs[FREG(B7_4)], addr, ctx->memidx);
}