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| author | Andrew Waterman <waterman@cs.berkeley.edu> | 2016-02-09 00:16:26 -0800 |
|---|---|---|
| committer | Andrew Waterman <waterman@cs.berkeley.edu> | 2016-02-19 13:01:11 -0800 |
| commit | d00cb5a5414198379575bc1fc5d5afb79d19ed00 (patch) | |
| tree | 28a93cb0db04c0a81f0a05a07ecb6fc18c20d5d9 | |
| parent | b0d83d2a8468553000bda6099fc5f907ec767b79 (diff) | |
| download | pk-d00cb5a5414198379575bc1fc5d5afb79d19ed00.zip pk-d00cb5a5414198379575bc1fc5d5afb79d19ed00.tar.gz pk-d00cb5a5414198379575bc1fc5d5afb79d19ed00.tar.bz2 | |
Rely on __riscv_muldiv and __riscv_hard_float macros
| -rw-r--r-- | pk/emulation.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/pk/emulation.c b/pk/emulation.c index 36c90a6..edc14bd 100644 --- a/pk/emulation.c +++ b/pk/emulation.c @@ -192,6 +192,7 @@ DECLARE_EMULATION_FUNC(emulate_mul_div) { uintptr_t rs1 = GET_RS1(insn, regs), rs2 = GET_RS2(insn, regs), val; +#ifndef __riscv_muldiv // If compiled with -mno-multiply, GCC will expand these out if ((insn & MASK_MUL) == MATCH_MUL) val = rs1 * rs2; @@ -210,6 +211,7 @@ DECLARE_EMULATION_FUNC(emulate_mul_div) else if ((insn & MASK_MULHSU) == MATCH_MULHSU) val = ((double_int)(intptr_t)rs1 * (double_int)rs2) >> (8 * sizeof(rs1)); else +#endif return truly_illegal_insn(regs, mcause, mepc, mstatus, insn); SET_RD(insn, regs, val); @@ -217,13 +219,10 @@ DECLARE_EMULATION_FUNC(emulate_mul_div) DECLARE_EMULATION_FUNC(emulate_mul_div32) { -#ifndef __riscv64 - return truly_illegal_insn(regs, mcause, mepc, mstatus, insn); -#endif - uint32_t rs1 = GET_RS1(insn, regs), rs2 = GET_RS2(insn, regs); int32_t val; +#if defined(__riscv64) && !defined(__riscv_muldiv) // If compiled with -mno-multiply, GCC will expand these out if ((insn & MASK_MULW) == MATCH_MULW) val = rs1 * rs2; @@ -236,6 +235,7 @@ DECLARE_EMULATION_FUNC(emulate_mul_div32) else if ((insn & MASK_REMUW) == MATCH_REMUW) val = rs1 % rs2; else +#endif return truly_illegal_insn(regs, mcause, mepc, mstatus, insn); SET_RD(insn, regs, val); @@ -245,6 +245,7 @@ static inline int emulate_read_csr(int num, uintptr_t mstatus, uintptr_t* result { switch (num) { +#ifndef __riscv_hard_float case CSR_FRM: if ((mstatus & MSTATUS_FS) == 0) break; *result = GET_FRM(); @@ -257,6 +258,7 @@ static inline int emulate_read_csr(int num, uintptr_t mstatus, uintptr_t* result if ((mstatus & MSTATUS_FS) == 0) break; *result = GET_FCSR(); return 0; +#endif } return -1; } @@ -265,9 +267,11 @@ static inline void emulate_write_csr(int num, uintptr_t value, uintptr_t mstatus { switch (num) { +#ifndef __riscv_hard_float case CSR_FRM: SET_FRM(value); return; case CSR_FFLAGS: SET_FFLAGS(value); return; case CSR_FCSR: SET_FCSR(value); return; +#endif } } |