diff options
Diffstat (limited to 'target-tilegx')
| -rw-r--r-- | target-tilegx/cpu.h | 5 | ||||
| -rw-r--r-- | target-tilegx/translate.c | 81 |
2 files changed, 71 insertions, 15 deletions
diff --git a/target-tilegx/cpu.h b/target-tilegx/cpu.h index b9f5082b95..023ccd4735 100644 --- a/target-tilegx/cpu.h +++ b/target-tilegx/cpu.h @@ -61,6 +61,7 @@ typedef enum { TILEGX_EXCP_NONE = 0, TILEGX_EXCP_SYSCALL = 1, TILEGX_EXCP_SEGV = 2, + TILEGX_EXCP_SIGNAL = 3, TILEGX_EXCP_OPCODE_UNKNOWN = 0x101, TILEGX_EXCP_OPCODE_UNIMPLEMENTED = 0x102, TILEGX_EXCP_OPCODE_CMPEXCH = 0x103, @@ -87,10 +88,12 @@ typedef struct CPUTLGState { uint64_t pc; /* Current pc */ #if defined(CONFIG_USER_ONLY) + uint64_t excaddr; /* exception address */ uint64_t atomic_srca; /* Arguments to atomic "exceptions" */ uint64_t atomic_srcb; uint32_t atomic_dstr; - uint64_t excaddr; /* exception address */ + uint32_t signo; /* Signal number */ + uint32_t sigcode; /* Signal code */ #endif CPU_COMMON diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c index 3566b88f27..54aa71d49c 100644 --- a/target-tilegx/translate.c +++ b/target-tilegx/translate.c @@ -23,6 +23,8 @@ #include "disas/disas.h" #include "tcg-op.h" #include "exec/cpu_ldst.h" +#include "linux-user/syscall_defs.h" + #include "opcode_tilegx.h" #include "spr_def_64.h" @@ -429,8 +431,66 @@ static void gen_v4op(TCGv d64, TCGv a64, TCGv b64, tcg_temp_free_i32(bh); } +static TileExcp gen_signal(DisasContext *dc, int signo, int sigcode, + const char *mnemonic) +{ + TCGv_i32 t0 = tcg_const_i32(signo); + TCGv_i32 t1 = tcg_const_i32(sigcode); + + tcg_gen_st_i32(t0, cpu_env, offsetof(CPUTLGState, signo)); + tcg_gen_st_i32(t1, cpu_env, offsetof(CPUTLGState, sigcode)); + + tcg_temp_free_i32(t1); + tcg_temp_free_i32(t0); + + qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s", mnemonic); + return TILEGX_EXCP_SIGNAL; +} + +static bool parse_from_addli(uint64_t bundle, int *signo, int *sigcode) +{ + int imm; + + if ((get_Opcode_X0(bundle) != ADDLI_OPCODE_X0) + || (get_Dest_X0(bundle) != TILEGX_R_ZERO) + || (get_SrcA_X0(bundle) != TILEGX_R_ZERO)) { + return false; + } + + imm = get_Imm16_X0(bundle); + *signo = imm & 0x3f; + *sigcode = (imm >> 6) & 0xf; + + /* ??? The linux kernel validates both signo and the sigcode vs the + known max for each signal. Don't bother here. */ + return true; +} + +static TileExcp gen_specill(DisasContext *dc, unsigned dest, unsigned srca, + uint64_t bundle) +{ + const char *mnemonic; + int signo; + int sigcode; + + if (dest == 0x1c && srca == 0x25) { + signo = TARGET_SIGTRAP; + sigcode = TARGET_TRAP_BRKPT; + mnemonic = "bpt"; + } else if (dest == 0x1d && srca == 0x25 + && parse_from_addli(bundle, &signo, &sigcode)) { + mnemonic = "raise"; + } else { + signo = TARGET_SIGILL; + sigcode = TARGET_ILL_ILLOPC; + mnemonic = "ill"; + } + + return gen_signal(dc, signo, sigcode, mnemonic); +} + static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, - unsigned dest, unsigned srca) + unsigned dest, unsigned srca, uint64_t bundle) { TCGv tdest, tsrca; const char *mnemonic; @@ -458,16 +518,9 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, mnemonic = "flushwb"; goto done0; case OE_RR_X1(ILL): - if (dest == 0x1c && srca == 0x25) { - mnemonic = "bpt"; - goto done2; - } - /* Fall through */ + return gen_specill(dc, dest, srca, bundle); case OE_RR_Y1(ILL): - mnemonic = "ill"; - done2: - qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s", mnemonic); - return TILEGX_EXCP_OPCODE_UNKNOWN; + return gen_signal(dc, TARGET_SIGILL, TARGET_ILL_ILLOPC, "ill"); case OE_RR_X1(MF): mnemonic = "mf"; goto done0; @@ -1909,7 +1962,7 @@ static TileExcp decode_y0(DisasContext *dc, tilegx_bundle_bits bundle) case RRR_1_OPCODE_Y0: if (ext == UNARY_RRR_1_OPCODE_Y0) { ext = get_UnaryOpcodeExtension_Y0(bundle); - return gen_rr_opcode(dc, OE(opc, ext, Y0), dest, srca); + return gen_rr_opcode(dc, OE(opc, ext, Y0), dest, srca, bundle); } /* fallthru */ case RRR_0_OPCODE_Y0: @@ -1955,7 +2008,7 @@ static TileExcp decode_y1(DisasContext *dc, tilegx_bundle_bits bundle) case RRR_1_OPCODE_Y1: if (ext == UNARY_RRR_1_OPCODE_Y0) { ext = get_UnaryOpcodeExtension_Y1(bundle); - return gen_rr_opcode(dc, OE(opc, ext, Y1), dest, srca); + return gen_rr_opcode(dc, OE(opc, ext, Y1), dest, srca, bundle); } /* fallthru */ case RRR_0_OPCODE_Y1: @@ -2057,7 +2110,7 @@ static TileExcp decode_x0(DisasContext *dc, tilegx_bundle_bits bundle) ext = get_RRROpcodeExtension_X0(bundle); if (ext == UNARY_RRR_0_OPCODE_X0) { ext = get_UnaryOpcodeExtension_X0(bundle); - return gen_rr_opcode(dc, OE(opc, ext, X0), dest, srca); + return gen_rr_opcode(dc, OE(opc, ext, X0), dest, srca, bundle); } srcb = get_SrcB_X0(bundle); return gen_rrr_opcode(dc, OE(opc, ext, X0), dest, srca, srcb); @@ -2104,7 +2157,7 @@ static TileExcp decode_x1(DisasContext *dc, tilegx_bundle_bits bundle) switch (ext) { case UNARY_RRR_0_OPCODE_X1: ext = get_UnaryOpcodeExtension_X1(bundle); - return gen_rr_opcode(dc, OE(opc, ext, X1), dest, srca); + return gen_rr_opcode(dc, OE(opc, ext, X1), dest, srca, bundle); case ST1_RRR_0_OPCODE_X1: return gen_st_opcode(dc, dest, srca, srcb, MO_UB, "st1"); case ST2_RRR_0_OPCODE_X1: |