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-rw-r--r--target/ppc/internal.h202
1 files changed, 202 insertions, 0 deletions
diff --git a/target/ppc/internal.h b/target/ppc/internal.h
index 1ff4896c45..5a2fd68427 100644
--- a/target/ppc/internal.h
+++ b/target/ppc/internal.h
@@ -47,4 +47,206 @@ FUNC_MASK(MASK, target_ulong, 32, UINT32_MAX);
FUNC_MASK(mask_u32, uint32_t, 32, UINT32_MAX);
FUNC_MASK(mask_u64, uint64_t, 64, UINT64_MAX);
+/*****************************************************************************/
+/*** Instruction decoding ***/
+#define EXTRACT_HELPER(name, shift, nb) \
+static inline uint32_t name(uint32_t opcode) \
+{ \
+ return (opcode >> (shift)) & ((1 << (nb)) - 1); \
+}
+
+#define EXTRACT_SHELPER(name, shift, nb) \
+static inline int32_t name(uint32_t opcode) \
+{ \
+ return (int16_t)((opcode >> (shift)) & ((1 << (nb)) - 1)); \
+}
+
+#define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
+static inline uint32_t name(uint32_t opcode) \
+{ \
+ return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
+ ((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \
+}
+
+#define EXTRACT_HELPER_SPLIT_3(name, \
+ d0_bits, shift_op_d0, shift_d0, \
+ d1_bits, shift_op_d1, shift_d1, \
+ d2_bits, shift_op_d2, shift_d2) \
+static inline int16_t name(uint32_t opcode) \
+{ \
+ return \
+ (((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \
+ (((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \
+ (((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \
+}
+
+
+/* Opcode part 1 */
+EXTRACT_HELPER(opc1, 26, 6);
+/* Opcode part 2 */
+EXTRACT_HELPER(opc2, 1, 5);
+/* Opcode part 3 */
+EXTRACT_HELPER(opc3, 6, 5);
+/* Opcode part 4 */
+EXTRACT_HELPER(opc4, 16, 5);
+/* Update Cr0 flags */
+EXTRACT_HELPER(Rc, 0, 1);
+/* Update Cr6 flags (Altivec) */
+EXTRACT_HELPER(Rc21, 10, 1);
+/* Destination */
+EXTRACT_HELPER(rD, 21, 5);
+/* Source */
+EXTRACT_HELPER(rS, 21, 5);
+/* First operand */
+EXTRACT_HELPER(rA, 16, 5);
+/* Second operand */
+EXTRACT_HELPER(rB, 11, 5);
+/* Third operand */
+EXTRACT_HELPER(rC, 6, 5);
+/*** Get CRn ***/
+EXTRACT_HELPER(crfD, 23, 3);
+EXTRACT_HELPER(BF, 23, 3);
+EXTRACT_HELPER(crfS, 18, 3);
+EXTRACT_HELPER(crbD, 21, 5);
+EXTRACT_HELPER(crbA, 16, 5);
+EXTRACT_HELPER(crbB, 11, 5);
+/* SPR / TBL */
+EXTRACT_HELPER(_SPR, 11, 10);
+static inline uint32_t SPR(uint32_t opcode)
+{
+ uint32_t sprn = _SPR(opcode);
+
+ return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5);
+}
+/*** Get constants ***/
+/* 16 bits signed immediate value */
+EXTRACT_SHELPER(SIMM, 0, 16);
+/* 16 bits unsigned immediate value */
+EXTRACT_HELPER(UIMM, 0, 16);
+/* 5 bits signed immediate value */
+EXTRACT_HELPER(SIMM5, 16, 5);
+/* 5 bits signed immediate value */
+EXTRACT_HELPER(UIMM5, 16, 5);
+/* 4 bits unsigned immediate value */
+EXTRACT_HELPER(UIMM4, 16, 4);
+/* Bit count */
+EXTRACT_HELPER(NB, 11, 5);
+/* Shift count */
+EXTRACT_HELPER(SH, 11, 5);
+/* Vector shift count */
+EXTRACT_HELPER(VSH, 6, 4);
+/* Mask start */
+EXTRACT_HELPER(MB, 6, 5);
+/* Mask end */
+EXTRACT_HELPER(ME, 1, 5);
+/* Trap operand */
+EXTRACT_HELPER(TO, 21, 5);
+
+EXTRACT_HELPER(CRM, 12, 8);
+
+#ifndef CONFIG_USER_ONLY
+EXTRACT_HELPER(SR, 16, 4);
+#endif
+
+/* mtfsf/mtfsfi */
+EXTRACT_HELPER(FPBF, 23, 3);
+EXTRACT_HELPER(FPIMM, 12, 4);
+EXTRACT_HELPER(FPL, 25, 1);
+EXTRACT_HELPER(FPFLM, 17, 8);
+EXTRACT_HELPER(FPW, 16, 1);
+
+/* addpcis */
+EXTRACT_HELPER_SPLIT_3(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0)
+#if defined(TARGET_PPC64)
+/* darn */
+EXTRACT_HELPER(L, 16, 2);
+#endif
+
+/*** Jump target decoding ***/
+/* Immediate address */
+static inline target_ulong LI(uint32_t opcode)
+{
+ return (opcode >> 0) & 0x03FFFFFC;
+}
+
+static inline uint32_t BD(uint32_t opcode)
+{
+ return (opcode >> 0) & 0xFFFC;
+}
+
+EXTRACT_HELPER(BO, 21, 5);
+EXTRACT_HELPER(BI, 16, 5);
+/* Absolute/relative address */
+EXTRACT_HELPER(AA, 1, 1);
+/* Link */
+EXTRACT_HELPER(LK, 0, 1);
+
+/* DFP Z22-form */
+EXTRACT_HELPER(DCM, 10, 6)
+
+/* DFP Z23-form */
+EXTRACT_HELPER(RMC, 9, 2)
+
+EXTRACT_HELPER_SPLIT(DQxT, 3, 1, 21, 5);
+EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
+EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
+EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
+EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
+EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5);
+EXTRACT_HELPER(DM, 8, 2);
+EXTRACT_HELPER(UIM, 16, 2);
+EXTRACT_HELPER(SHW, 8, 2);
+EXTRACT_HELPER(SP, 19, 2);
+EXTRACT_HELPER(IMM8, 11, 8);
+EXTRACT_HELPER(DCMX, 16, 7);
+EXTRACT_HELPER_SPLIT_3(DCMX_XV, 5, 16, 0, 1, 2, 5, 1, 6, 6);
+
+typedef union _ppc_vsr_t {
+ uint8_t u8[16];
+ uint16_t u16[8];
+ uint32_t u32[4];
+ uint64_t u64[2];
+ float32 f32[4];
+ float64 f64[2];
+ float128 f128;
+ Int128 s128;
+} ppc_vsr_t;
+
+#if defined(HOST_WORDS_BIGENDIAN)
+#define VsrB(i) u8[i]
+#define VsrH(i) u16[i]
+#define VsrW(i) u32[i]
+#define VsrD(i) u64[i]
+#else
+#define VsrB(i) u8[15 - (i)]
+#define VsrH(i) u16[7 - (i)]
+#define VsrW(i) u32[3 - (i)]
+#define VsrD(i) u64[1 - (i)]
+#endif
+
+static inline void getVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
+{
+ if (n < 32) {
+ vsr->VsrD(0) = env->fpr[n];
+ vsr->VsrD(1) = env->vsr[n];
+ } else {
+ vsr->u64[0] = env->avr[n - 32].u64[0];
+ vsr->u64[1] = env->avr[n - 32].u64[1];
+ }
+}
+
+static inline void putVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
+{
+ if (n < 32) {
+ env->fpr[n] = vsr->VsrD(0);
+ env->vsr[n] = vsr->VsrD(1);
+ } else {
+ env->avr[n - 32].u64[0] = vsr->u64[0];
+ env->avr[n - 32].u64[1] = vsr->u64[1];
+ }
+}
+
+void helper_compute_fprf_float16(CPUPPCState *env, float16 arg);
+void helper_compute_fprf_float32(CPUPPCState *env, float32 arg);
+void helper_compute_fprf_float128(CPUPPCState *env, float128 arg);
#endif /* PPC_INTERNAL_H */
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-10 12:24:13 +0000