target-ppc: Consolidate instruction decode helpers
Move instruction decode helpers to target-ppc/internal.h so that some of these can be used from outside of translate.c. This movement also helps to get rid of some duplicate helpers from target-ppc/fpu_helper.c. Suggested-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Bharata B Rao
David Gibson
parent
bd97a59eec
commit
985e3023f7
@ -20,6 +20,7 @@
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#include "cpu.h"
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#include "exec/helper-proto.h"
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#include "exec/exec-all.h"
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#include "internal.h"
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#define float64_snan_to_qnan(x) ((x) | 0x0008000000000000ULL)
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#define float32_snan_to_qnan(x) ((x) | 0x00400000)
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@ -1776,16 +1777,6 @@ uint32_t helper_efdcmpeq(CPUPPCState *env, uint64_t op1, uint64_t op2)
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return helper_efdtsteq(env, op1, op2);
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}
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#define DECODE_SPLIT(opcode, shift1, nb1, shift2, nb2) \
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(((((opcode) >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
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(((opcode) >> (shift2)) & ((1 << (nb2)) - 1)))
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#define xT(opcode) DECODE_SPLIT(opcode, 0, 1, 21, 5)
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#define xA(opcode) DECODE_SPLIT(opcode, 2, 1, 16, 5)
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#define xB(opcode) DECODE_SPLIT(opcode, 1, 1, 11, 5)
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#define xC(opcode) DECODE_SPLIT(opcode, 3, 1, 6, 5)
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#define BF(opcode) (((opcode) >> (31-8)) & 7)
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typedef union _ppc_vsr_t {
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uint64_t u64[2];
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uint32_t u32[4];
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@ -47,4 +47,155 @@ FUNC_MASK(MASK, target_ulong, 32, UINT32_MAX);
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FUNC_MASK(mask_u32, uint32_t, 32, UINT32_MAX);
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FUNC_MASK(mask_u64, uint64_t, 64, UINT64_MAX);
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/*****************************************************************************/
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/*** Instruction decoding ***/
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#define EXTRACT_HELPER(name, shift, nb) \
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static inline uint32_t name(uint32_t opcode) \
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{ \
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return (opcode >> (shift)) & ((1 << (nb)) - 1); \
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}
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#define EXTRACT_SHELPER(name, shift, nb) \
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static inline int32_t name(uint32_t opcode) \
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{ \
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return (int16_t)((opcode >> (shift)) & ((1 << (nb)) - 1)); \
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}
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#define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
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static inline uint32_t name(uint32_t opcode) \
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{ \
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return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
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((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \
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}
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#define EXTRACT_HELPER_DXFORM(name, \
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d0_bits, shift_op_d0, shift_d0, \
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d1_bits, shift_op_d1, shift_d1, \
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d2_bits, shift_op_d2, shift_d2) \
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static inline int16_t name(uint32_t opcode) \
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{ \
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return \
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(((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \
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(((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \
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(((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \
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}
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/* Opcode part 1 */
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EXTRACT_HELPER(opc1, 26, 6);
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/* Opcode part 2 */
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EXTRACT_HELPER(opc2, 1, 5);
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/* Opcode part 3 */
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EXTRACT_HELPER(opc3, 6, 5);
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/* Opcode part 4 */
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EXTRACT_HELPER(opc4, 16, 5);
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/* Update Cr0 flags */
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EXTRACT_HELPER(Rc, 0, 1);
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/* Update Cr6 flags (Altivec) */
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EXTRACT_HELPER(Rc21, 10, 1);
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/* Destination */
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EXTRACT_HELPER(rD, 21, 5);
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/* Source */
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EXTRACT_HELPER(rS, 21, 5);
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/* First operand */
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EXTRACT_HELPER(rA, 16, 5);
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/* Second operand */
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EXTRACT_HELPER(rB, 11, 5);
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/* Third operand */
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EXTRACT_HELPER(rC, 6, 5);
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/*** Get CRn ***/
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EXTRACT_HELPER(crfD, 23, 3);
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EXTRACT_HELPER(BF, 23, 3);
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EXTRACT_HELPER(crfS, 18, 3);
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EXTRACT_HELPER(crbD, 21, 5);
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EXTRACT_HELPER(crbA, 16, 5);
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EXTRACT_HELPER(crbB, 11, 5);
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/* SPR / TBL */
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EXTRACT_HELPER(_SPR, 11, 10);
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static inline uint32_t SPR(uint32_t opcode)
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{
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uint32_t sprn = _SPR(opcode);
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return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5);
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}
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/*** Get constants ***/
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/* 16 bits signed immediate value */
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EXTRACT_SHELPER(SIMM, 0, 16);
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/* 16 bits unsigned immediate value */
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EXTRACT_HELPER(UIMM, 0, 16);
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/* 5 bits signed immediate value */
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EXTRACT_HELPER(SIMM5, 16, 5);
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/* 5 bits signed immediate value */
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EXTRACT_HELPER(UIMM5, 16, 5);
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/* 4 bits unsigned immediate value */
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EXTRACT_HELPER(UIMM4, 16, 4);
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/* Bit count */
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EXTRACT_HELPER(NB, 11, 5);
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/* Shift count */
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EXTRACT_HELPER(SH, 11, 5);
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/* Vector shift count */
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EXTRACT_HELPER(VSH, 6, 4);
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/* Mask start */
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EXTRACT_HELPER(MB, 6, 5);
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/* Mask end */
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EXTRACT_HELPER(ME, 1, 5);
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/* Trap operand */
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EXTRACT_HELPER(TO, 21, 5);
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EXTRACT_HELPER(CRM, 12, 8);
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#ifndef CONFIG_USER_ONLY
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EXTRACT_HELPER(SR, 16, 4);
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#endif
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/* mtfsf/mtfsfi */
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EXTRACT_HELPER(FPBF, 23, 3);
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EXTRACT_HELPER(FPIMM, 12, 4);
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EXTRACT_HELPER(FPL, 25, 1);
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EXTRACT_HELPER(FPFLM, 17, 8);
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EXTRACT_HELPER(FPW, 16, 1);
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/* addpcis */
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EXTRACT_HELPER_DXFORM(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0)
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#if defined(TARGET_PPC64)
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/* darn */
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EXTRACT_HELPER(L, 16, 2);
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#endif
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/*** Jump target decoding ***/
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/* Immediate address */
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static inline target_ulong LI(uint32_t opcode)
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{
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return (opcode >> 0) & 0x03FFFFFC;
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}
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static inline uint32_t BD(uint32_t opcode)
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{
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return (opcode >> 0) & 0xFFFC;
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}
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EXTRACT_HELPER(BO, 21, 5);
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EXTRACT_HELPER(BI, 16, 5);
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/* Absolute/relative address */
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EXTRACT_HELPER(AA, 1, 1);
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/* Link */
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EXTRACT_HELPER(LK, 0, 1);
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/* DFP Z22-form */
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EXTRACT_HELPER(DCM, 10, 6)
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/* DFP Z23-form */
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EXTRACT_HELPER(RMC, 9, 2)
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EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
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EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
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EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
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EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
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EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5);
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EXTRACT_HELPER(DM, 8, 2);
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EXTRACT_HELPER(UIM, 16, 2);
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EXTRACT_HELPER(SHW, 8, 2);
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EXTRACT_HELPER(SP, 19, 2);
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EXTRACT_HELPER(IMM8, 11, 8);
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#endif /* PPC_INTERNAL_H */
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@ -422,157 +422,6 @@ typedef struct opcode_t {
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#define CHK_NONE
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/*****************************************************************************/
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/*** Instruction decoding ***/
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#define EXTRACT_HELPER(name, shift, nb) \
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static inline uint32_t name(uint32_t opcode) \
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{ \
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return (opcode >> (shift)) & ((1 << (nb)) - 1); \
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}
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#define EXTRACT_SHELPER(name, shift, nb) \
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static inline int32_t name(uint32_t opcode) \
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{ \
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return (int16_t)((opcode >> (shift)) & ((1 << (nb)) - 1)); \
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}
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#define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
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static inline uint32_t name(uint32_t opcode) \
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{ \
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return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
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((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \
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}
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#define EXTRACT_HELPER_DXFORM(name, \
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d0_bits, shift_op_d0, shift_d0, \
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d1_bits, shift_op_d1, shift_d1, \
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d2_bits, shift_op_d2, shift_d2) \
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static inline int16_t name(uint32_t opcode) \
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{ \
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return \
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(((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \
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(((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \
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(((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \
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}
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/* Opcode part 1 */
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EXTRACT_HELPER(opc1, 26, 6);
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/* Opcode part 2 */
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EXTRACT_HELPER(opc2, 1, 5);
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/* Opcode part 3 */
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EXTRACT_HELPER(opc3, 6, 5);
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/* Opcode part 4 */
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EXTRACT_HELPER(opc4, 16, 5);
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/* Update Cr0 flags */
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EXTRACT_HELPER(Rc, 0, 1);
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/* Update Cr6 flags (Altivec) */
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EXTRACT_HELPER(Rc21, 10, 1);
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/* Destination */
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EXTRACT_HELPER(rD, 21, 5);
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/* Source */
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EXTRACT_HELPER(rS, 21, 5);
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/* First operand */
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EXTRACT_HELPER(rA, 16, 5);
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/* Second operand */
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EXTRACT_HELPER(rB, 11, 5);
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/* Third operand */
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EXTRACT_HELPER(rC, 6, 5);
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/*** Get CRn ***/
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EXTRACT_HELPER(crfD, 23, 3);
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EXTRACT_HELPER(crfS, 18, 3);
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EXTRACT_HELPER(crbD, 21, 5);
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EXTRACT_HELPER(crbA, 16, 5);
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EXTRACT_HELPER(crbB, 11, 5);
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/* SPR / TBL */
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EXTRACT_HELPER(_SPR, 11, 10);
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static inline uint32_t SPR(uint32_t opcode)
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{
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uint32_t sprn = _SPR(opcode);
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return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5);
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}
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/*** Get constants ***/
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/* 16 bits signed immediate value */
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EXTRACT_SHELPER(SIMM, 0, 16);
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/* 16 bits unsigned immediate value */
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EXTRACT_HELPER(UIMM, 0, 16);
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/* 5 bits signed immediate value */
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EXTRACT_HELPER(SIMM5, 16, 5);
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/* 5 bits signed immediate value */
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EXTRACT_HELPER(UIMM5, 16, 5);
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/* 4 bits unsigned immediate value */
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EXTRACT_HELPER(UIMM4, 16, 4);
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/* Bit count */
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EXTRACT_HELPER(NB, 11, 5);
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/* Shift count */
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EXTRACT_HELPER(SH, 11, 5);
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/* Vector shift count */
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EXTRACT_HELPER(VSH, 6, 4);
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/* Mask start */
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EXTRACT_HELPER(MB, 6, 5);
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/* Mask end */
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EXTRACT_HELPER(ME, 1, 5);
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/* Trap operand */
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EXTRACT_HELPER(TO, 21, 5);
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EXTRACT_HELPER(CRM, 12, 8);
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#ifndef CONFIG_USER_ONLY
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EXTRACT_HELPER(SR, 16, 4);
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#endif
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/* mtfsf/mtfsfi */
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EXTRACT_HELPER(FPBF, 23, 3);
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EXTRACT_HELPER(FPIMM, 12, 4);
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EXTRACT_HELPER(FPL, 25, 1);
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EXTRACT_HELPER(FPFLM, 17, 8);
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EXTRACT_HELPER(FPW, 16, 1);
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/* addpcis */
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EXTRACT_HELPER_DXFORM(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0)
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#if defined(TARGET_PPC64)
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/* darn */
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EXTRACT_HELPER(L, 16, 2);
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#endif
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/*** Jump target decoding ***/
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/* Immediate address */
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static inline target_ulong LI(uint32_t opcode)
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{
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return (opcode >> 0) & 0x03FFFFFC;
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}
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static inline uint32_t BD(uint32_t opcode)
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{
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return (opcode >> 0) & 0xFFFC;
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}
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EXTRACT_HELPER(BO, 21, 5);
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EXTRACT_HELPER(BI, 16, 5);
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/* Absolute/relative address */
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EXTRACT_HELPER(AA, 1, 1);
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/* Link */
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EXTRACT_HELPER(LK, 0, 1);
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/* DFP Z22-form */
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EXTRACT_HELPER(DCM, 10, 6)
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/* DFP Z23-form */
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EXTRACT_HELPER(RMC, 9, 2)
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EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
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EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
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EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
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EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
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EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5);
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EXTRACT_HELPER(DM, 8, 2);
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EXTRACT_HELPER(UIM, 16, 2);
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EXTRACT_HELPER(SHW, 8, 2);
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EXTRACT_HELPER(SP, 19, 2);
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EXTRACT_HELPER(IMM8, 11, 8);
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/*****************************************************************************/
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/* PowerPC instructions table */
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