diff options
Diffstat (limited to 'riscv/insns/psshlr_hs.h')
| -rw-r--r-- | riscv/insns/psshlr_hs.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/riscv/insns/psshlr_hs.h b/riscv/insns/psshlr_hs.h new file mode 100644 index 00000000..fd7df13d --- /dev/null +++ b/riscv/insns/psshlr_hs.h @@ -0,0 +1,22 @@ +sreg_t sshamt = P_FIELD(RS2, 0, 8); +P_RD_RS1_LOOP(16, 16, { + if (sshamt < 0) { + uint32_t shx; + if (sshamt < -16) + shx = 0; + else if (sshamt == -16) + shx = ((uint16_t)p_rs1 >> 15) & 1; + else + shx = ((uint32_t)(uint16_t)p_rs1 << 1) >> (-sshamt); + p_rd = (uint16_t)((shx + 1) >> 1); + } else { + uint32_t shx = (sshamt >= 16) ? ((uint32_t)(uint16_t)p_rs1 << 16) : ((uint32_t)(uint16_t)p_rs1 << sshamt); + if (shx > 0xFFFF) { + P.VU.vxsat->write(1); + p_rd = 0xFFFF; + } else { + p_rd = (uint16_t)shx; + } + } +}) + |