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Diffstat (limited to 'target/i386/hvf/x86_flags.c')
-rw-r--r--target/i386/hvf/x86_flags.c313
1 files changed, 0 insertions, 313 deletions
diff --git a/target/i386/hvf/x86_flags.c b/target/i386/hvf/x86_flags.c
deleted file mode 100644
index 03d6de5..0000000
--- a/target/i386/hvf/x86_flags.c
+++ /dev/null
@@ -1,313 +0,0 @@
-/////////////////////////////////////////////////////////////////////////
-//
-// Copyright (C) 2001-2012 The Bochs Project
-// Copyright (C) 2017 Google Inc.
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License, or (at your option) any later version.
-//
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
-/////////////////////////////////////////////////////////////////////////
-/*
- * flags functions
- */
-
-#include "qemu/osdep.h"
-
-#include "panic.h"
-#include "cpu.h"
-#include "x86_flags.h"
-#include "x86.h"
-
-
-/* this is basically bocsh code */
-
-#define LF_SIGN_BIT 31
-
-#define LF_BIT_SD (0) /* lazy Sign Flag Delta */
-#define LF_BIT_AF (3) /* lazy Adjust flag */
-#define LF_BIT_PDB (8) /* lazy Parity Delta Byte (8 bits) */
-#define LF_BIT_CF (31) /* lazy Carry Flag */
-#define LF_BIT_PO (30) /* lazy Partial Overflow = CF ^ OF */
-
-#define LF_MASK_SD (0x01 << LF_BIT_SD)
-#define LF_MASK_AF (0x01 << LF_BIT_AF)
-#define LF_MASK_PDB (0xFF << LF_BIT_PDB)
-#define LF_MASK_CF (0x01 << LF_BIT_CF)
-#define LF_MASK_PO (0x01 << LF_BIT_PO)
-
-#define ADD_COUT_VEC(op1, op2, result) \
- (((op1) & (op2)) | (((op1) | (op2)) & (~(result))))
-
-#define SUB_COUT_VEC(op1, op2, result) \
- (((~(op1)) & (op2)) | (((~(op1)) ^ (op2)) & (result)))
-
-#define GET_ADD_OVERFLOW(op1, op2, result, mask) \
- ((((op1) ^ (result)) & ((op2) ^ (result))) & (mask))
-
-/* ******************* */
-/* OSZAPC */
-/* ******************* */
-
-/* size, carries, result */
-#define SET_FLAGS_OSZAPC_SIZE(size, lf_carries, lf_result) { \
- target_ulong temp = ((lf_carries) & (LF_MASK_AF)) | \
- (((lf_carries) >> (size - 2)) << LF_BIT_PO); \
- env->hvf_lflags.result = (target_ulong)(int##size##_t)(lf_result); \
- if ((size) == 32) { \
- temp = ((lf_carries) & ~(LF_MASK_PDB | LF_MASK_SD)); \
- } else if ((size) == 16) { \
- temp = ((lf_carries) & (LF_MASK_AF)) | ((lf_carries) << 16); \
- } else if ((size) == 8) { \
- temp = ((lf_carries) & (LF_MASK_AF)) | ((lf_carries) << 24); \
- } else { \
- VM_PANIC("unimplemented"); \
- } \
- env->hvf_lflags.auxbits = (target_ulong)(uint32_t)temp; \
-}
-
-/* carries, result */
-#define SET_FLAGS_OSZAPC_8(carries, result) \
- SET_FLAGS_OSZAPC_SIZE(8, carries, result)
-#define SET_FLAGS_OSZAPC_16(carries, result) \
- SET_FLAGS_OSZAPC_SIZE(16, carries, result)
-#define SET_FLAGS_OSZAPC_32(carries, result) \
- SET_FLAGS_OSZAPC_SIZE(32, carries, result)
-
-/* ******************* */
-/* OSZAP */
-/* ******************* */
-/* size, carries, result */
-#define SET_FLAGS_OSZAP_SIZE(size, lf_carries, lf_result) { \
- target_ulong temp = ((lf_carries) & (LF_MASK_AF)) | \
- (((lf_carries) >> (size - 2)) << LF_BIT_PO); \
- if ((size) == 32) { \
- temp = ((lf_carries) & ~(LF_MASK_PDB | LF_MASK_SD)); \
- } else if ((size) == 16) { \
- temp = ((lf_carries) & (LF_MASK_AF)) | ((lf_carries) << 16); \
- } else if ((size) == 8) { \
- temp = ((lf_carries) & (LF_MASK_AF)) | ((lf_carries) << 24); \
- } else { \
- VM_PANIC("unimplemented"); \
- } \
- env->hvf_lflags.result = (target_ulong)(int##size##_t)(lf_result); \
- target_ulong delta_c = (env->hvf_lflags.auxbits ^ temp) & LF_MASK_CF; \
- delta_c ^= (delta_c >> 1); \
- env->hvf_lflags.auxbits = (target_ulong)(uint32_t)(temp ^ delta_c); \
-}
-
-/* carries, result */
-#define SET_FLAGS_OSZAP_8(carries, result) \
- SET_FLAGS_OSZAP_SIZE(8, carries, result)
-#define SET_FLAGS_OSZAP_16(carries, result) \
- SET_FLAGS_OSZAP_SIZE(16, carries, result)
-#define SET_FLAGS_OSZAP_32(carries, result) \
- SET_FLAGS_OSZAP_SIZE(32, carries, result)
-
-void SET_FLAGS_OxxxxC(CPUX86State *env, uint32_t new_of, uint32_t new_cf)
-{
- uint32_t temp_po = new_of ^ new_cf;
- env->hvf_lflags.auxbits &= ~(LF_MASK_PO | LF_MASK_CF);
- env->hvf_lflags.auxbits |= (temp_po << LF_BIT_PO) | (new_cf << LF_BIT_CF);
-}
-
-void SET_FLAGS_OSZAPC_SUB32(CPUX86State *env, uint32_t v1, uint32_t v2,
- uint32_t diff)
-{
- SET_FLAGS_OSZAPC_32(SUB_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAPC_SUB16(CPUX86State *env, uint16_t v1, uint16_t v2,
- uint16_t diff)
-{
- SET_FLAGS_OSZAPC_16(SUB_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAPC_SUB8(CPUX86State *env, uint8_t v1, uint8_t v2,
- uint8_t diff)
-{
- SET_FLAGS_OSZAPC_8(SUB_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAPC_ADD32(CPUX86State *env, uint32_t v1, uint32_t v2,
- uint32_t diff)
-{
- SET_FLAGS_OSZAPC_32(ADD_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAPC_ADD16(CPUX86State *env, uint16_t v1, uint16_t v2,
- uint16_t diff)
-{
- SET_FLAGS_OSZAPC_16(ADD_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAPC_ADD8(CPUX86State *env, uint8_t v1, uint8_t v2,
- uint8_t diff)
-{
- SET_FLAGS_OSZAPC_8(ADD_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAP_SUB32(CPUX86State *env, uint32_t v1, uint32_t v2,
- uint32_t diff)
-{
- SET_FLAGS_OSZAP_32(SUB_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAP_SUB16(CPUX86State *env, uint16_t v1, uint16_t v2,
- uint16_t diff)
-{
- SET_FLAGS_OSZAP_16(SUB_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAP_SUB8(CPUX86State *env, uint8_t v1, uint8_t v2,
- uint8_t diff)
-{
- SET_FLAGS_OSZAP_8(SUB_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAP_ADD32(CPUX86State *env, uint32_t v1, uint32_t v2,
- uint32_t diff)
-{
- SET_FLAGS_OSZAP_32(ADD_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAP_ADD16(CPUX86State *env, uint16_t v1, uint16_t v2,
- uint16_t diff)
-{
- SET_FLAGS_OSZAP_16(ADD_COUT_VEC(v1, v2, diff), diff);
-}
-
-void SET_FLAGS_OSZAP_ADD8(CPUX86State *env, uint8_t v1, uint8_t v2,
- uint8_t diff)
-{
- SET_FLAGS_OSZAP_8(ADD_COUT_VEC(v1, v2, diff), diff);
-}
-
-
-void SET_FLAGS_OSZAPC_LOGIC32(CPUX86State *env, uint32_t v1, uint32_t v2,
- uint32_t diff)
-{
- SET_FLAGS_OSZAPC_32(0, diff);
-}
-
-void SET_FLAGS_OSZAPC_LOGIC16(CPUX86State *env, uint16_t v1, uint16_t v2,
- uint16_t diff)
-{
- SET_FLAGS_OSZAPC_16(0, diff);
-}
-
-void SET_FLAGS_OSZAPC_LOGIC8(CPUX86State *env, uint8_t v1, uint8_t v2,
- uint8_t diff)
-{
- SET_FLAGS_OSZAPC_8(0, diff);
-}
-
-bool get_PF(CPUX86State *env)
-{
- uint32_t temp = (255 & env->hvf_lflags.result);
- temp = temp ^ (255 & (env->hvf_lflags.auxbits >> LF_BIT_PDB));
- temp = (temp ^ (temp >> 4)) & 0x0F;
- return (0x9669U >> temp) & 1;
-}
-
-void set_PF(CPUX86State *env, bool val)
-{
- uint32_t temp = (255 & env->hvf_lflags.result) ^ (!val);
- env->hvf_lflags.auxbits &= ~(LF_MASK_PDB);
- env->hvf_lflags.auxbits |= (temp << LF_BIT_PDB);
-}
-
-bool get_OF(CPUX86State *env)
-{
- return ((env->hvf_lflags.auxbits + (1U << LF_BIT_PO)) >> LF_BIT_CF) & 1;
-}
-
-bool get_CF(CPUX86State *env)
-{
- return (env->hvf_lflags.auxbits >> LF_BIT_CF) & 1;
-}
-
-void set_OF(CPUX86State *env, bool val)
-{
- bool old_cf = get_CF(env);
- SET_FLAGS_OxxxxC(env, val, old_cf);
-}
-
-void set_CF(CPUX86State *env, bool val)
-{
- bool old_of = get_OF(env);
- SET_FLAGS_OxxxxC(env, old_of, val);
-}
-
-bool get_AF(CPUX86State *env)
-{
- return (env->hvf_lflags.auxbits >> LF_BIT_AF) & 1;
-}
-
-void set_AF(CPUX86State *env, bool val)
-{
- env->hvf_lflags.auxbits &= ~(LF_MASK_AF);
- env->hvf_lflags.auxbits |= val << LF_BIT_AF;
-}
-
-bool get_ZF(CPUX86State *env)
-{
- return !env->hvf_lflags.result;
-}
-
-void set_ZF(CPUX86State *env, bool val)
-{
- if (val) {
- env->hvf_lflags.auxbits ^=
- (((env->hvf_lflags.result >> LF_SIGN_BIT) & 1) << LF_BIT_SD);
- /* merge the parity bits into the Parity Delta Byte */
- uint32_t temp_pdb = (255 & env->hvf_lflags.result);
- env->hvf_lflags.auxbits ^= (temp_pdb << LF_BIT_PDB);
- /* now zero the .result value */
- env->hvf_lflags.result = 0;
- } else {
- env->hvf_lflags.result |= (1 << 8);
- }
-}
-
-bool get_SF(CPUX86State *env)
-{
- return ((env->hvf_lflags.result >> LF_SIGN_BIT) ^
- (env->hvf_lflags.auxbits >> LF_BIT_SD)) & 1;
-}
-
-void set_SF(CPUX86State *env, bool val)
-{
- bool temp_sf = get_SF(env);
- env->hvf_lflags.auxbits ^= (temp_sf ^ val) << LF_BIT_SD;
-}
-
-void lflags_to_rflags(CPUX86State *env)
-{
- env->eflags |= get_CF(env) ? CC_C : 0;
- env->eflags |= get_PF(env) ? CC_P : 0;
- env->eflags |= get_AF(env) ? CC_A : 0;
- env->eflags |= get_ZF(env) ? CC_Z : 0;
- env->eflags |= get_SF(env) ? CC_S : 0;
- env->eflags |= get_OF(env) ? CC_O : 0;
-}
-
-void rflags_to_lflags(CPUX86State *env)
-{
- env->hvf_lflags.auxbits = env->hvf_lflags.result = 0;
- set_OF(env, env->eflags & CC_O);
- set_SF(env, env->eflags & CC_S);
- set_ZF(env, env->eflags & CC_Z);
- set_AF(env, env->eflags & CC_A);
- set_PF(env, env->eflags & CC_P);
- set_CF(env, env->eflags & CC_C);
-}
generated by cgit v1.1 at 2025-08-03 07:28:37 +0000