diff options
Diffstat (limited to 'target/riscv/gdbstub.c')
| -rw-r--r-- | target/riscv/gdbstub.c | 308 |
1 files changed, 44 insertions, 264 deletions
diff --git a/target/riscv/gdbstub.c b/target/riscv/gdbstub.c index eba12a86f2..5f96b7ea2a 100644 --- a/target/riscv/gdbstub.c +++ b/target/riscv/gdbstub.c @@ -20,256 +20,6 @@ #include "exec/gdbstub.h" #include "cpu.h" -/* - * The GDB CSR xml files list them in documentation order, not numerical order, - * and are missing entries for unnamed CSRs. So we need to map the gdb numbers - * to the hardware numbers. - */ - -static int csr_register_map[] = { - CSR_USTATUS, - CSR_UIE, - CSR_UTVEC, - CSR_USCRATCH, - CSR_UEPC, - CSR_UCAUSE, - CSR_UTVAL, - CSR_UIP, - CSR_FFLAGS, - CSR_FRM, - CSR_FCSR, - CSR_CYCLE, - CSR_TIME, - CSR_INSTRET, - CSR_HPMCOUNTER3, - CSR_HPMCOUNTER4, - CSR_HPMCOUNTER5, - CSR_HPMCOUNTER6, - CSR_HPMCOUNTER7, - CSR_HPMCOUNTER8, - CSR_HPMCOUNTER9, - CSR_HPMCOUNTER10, - CSR_HPMCOUNTER11, - CSR_HPMCOUNTER12, - CSR_HPMCOUNTER13, - CSR_HPMCOUNTER14, - CSR_HPMCOUNTER15, - CSR_HPMCOUNTER16, - CSR_HPMCOUNTER17, - CSR_HPMCOUNTER18, - CSR_HPMCOUNTER19, - CSR_HPMCOUNTER20, - CSR_HPMCOUNTER21, - CSR_HPMCOUNTER22, - CSR_HPMCOUNTER23, - CSR_HPMCOUNTER24, - CSR_HPMCOUNTER25, - CSR_HPMCOUNTER26, - CSR_HPMCOUNTER27, - CSR_HPMCOUNTER28, - CSR_HPMCOUNTER29, - CSR_HPMCOUNTER30, - CSR_HPMCOUNTER31, - CSR_CYCLEH, - CSR_TIMEH, - CSR_INSTRETH, - CSR_HPMCOUNTER3H, - CSR_HPMCOUNTER4H, - CSR_HPMCOUNTER5H, - CSR_HPMCOUNTER6H, - CSR_HPMCOUNTER7H, - CSR_HPMCOUNTER8H, - CSR_HPMCOUNTER9H, - CSR_HPMCOUNTER10H, - CSR_HPMCOUNTER11H, - CSR_HPMCOUNTER12H, - CSR_HPMCOUNTER13H, - CSR_HPMCOUNTER14H, - CSR_HPMCOUNTER15H, - CSR_HPMCOUNTER16H, - CSR_HPMCOUNTER17H, - CSR_HPMCOUNTER18H, - CSR_HPMCOUNTER19H, - CSR_HPMCOUNTER20H, - CSR_HPMCOUNTER21H, - CSR_HPMCOUNTER22H, - CSR_HPMCOUNTER23H, - CSR_HPMCOUNTER24H, - CSR_HPMCOUNTER25H, - CSR_HPMCOUNTER26H, - CSR_HPMCOUNTER27H, - CSR_HPMCOUNTER28H, - CSR_HPMCOUNTER29H, - CSR_HPMCOUNTER30H, - CSR_HPMCOUNTER31H, - CSR_SSTATUS, - CSR_SEDELEG, - CSR_SIDELEG, - CSR_SIE, - CSR_STVEC, - CSR_SCOUNTEREN, - CSR_SSCRATCH, - CSR_SEPC, - CSR_SCAUSE, - CSR_STVAL, - CSR_SIP, - CSR_SATP, - CSR_MVENDORID, - CSR_MARCHID, - CSR_MIMPID, - CSR_MHARTID, - CSR_MSTATUS, - CSR_MISA, - CSR_MEDELEG, - CSR_MIDELEG, - CSR_MIE, - CSR_MTVEC, - CSR_MCOUNTEREN, - CSR_MSCRATCH, - CSR_MEPC, - CSR_MCAUSE, - CSR_MTVAL, - CSR_MIP, - CSR_MTINST, - CSR_MTVAL2, - CSR_PMPCFG0, - CSR_PMPCFG1, - CSR_PMPCFG2, - CSR_PMPCFG3, - CSR_PMPADDR0, - CSR_PMPADDR1, - CSR_PMPADDR2, - CSR_PMPADDR3, - CSR_PMPADDR4, - CSR_PMPADDR5, - CSR_PMPADDR6, - CSR_PMPADDR7, - CSR_PMPADDR8, - CSR_PMPADDR9, - CSR_PMPADDR10, - CSR_PMPADDR11, - CSR_PMPADDR12, - CSR_PMPADDR13, - CSR_PMPADDR14, - CSR_PMPADDR15, - CSR_MCYCLE, - CSR_MINSTRET, - CSR_MHPMCOUNTER3, - CSR_MHPMCOUNTER4, - CSR_MHPMCOUNTER5, - CSR_MHPMCOUNTER6, - CSR_MHPMCOUNTER7, - CSR_MHPMCOUNTER8, - CSR_MHPMCOUNTER9, - CSR_MHPMCOUNTER10, - CSR_MHPMCOUNTER11, - CSR_MHPMCOUNTER12, - CSR_MHPMCOUNTER13, - CSR_MHPMCOUNTER14, - CSR_MHPMCOUNTER15, - CSR_MHPMCOUNTER16, - CSR_MHPMCOUNTER17, - CSR_MHPMCOUNTER18, - CSR_MHPMCOUNTER19, - CSR_MHPMCOUNTER20, - CSR_MHPMCOUNTER21, - CSR_MHPMCOUNTER22, - CSR_MHPMCOUNTER23, - CSR_MHPMCOUNTER24, - CSR_MHPMCOUNTER25, - CSR_MHPMCOUNTER26, - CSR_MHPMCOUNTER27, - CSR_MHPMCOUNTER28, - CSR_MHPMCOUNTER29, - CSR_MHPMCOUNTER30, - CSR_MHPMCOUNTER31, - CSR_MCYCLEH, - CSR_MINSTRETH, - CSR_MHPMCOUNTER3H, - CSR_MHPMCOUNTER4H, - CSR_MHPMCOUNTER5H, - CSR_MHPMCOUNTER6H, - CSR_MHPMCOUNTER7H, - CSR_MHPMCOUNTER8H, - CSR_MHPMCOUNTER9H, - CSR_MHPMCOUNTER10H, - CSR_MHPMCOUNTER11H, - CSR_MHPMCOUNTER12H, - CSR_MHPMCOUNTER13H, - CSR_MHPMCOUNTER14H, - CSR_MHPMCOUNTER15H, - CSR_MHPMCOUNTER16H, - CSR_MHPMCOUNTER17H, - CSR_MHPMCOUNTER18H, - CSR_MHPMCOUNTER19H, - CSR_MHPMCOUNTER20H, - CSR_MHPMCOUNTER21H, - CSR_MHPMCOUNTER22H, - CSR_MHPMCOUNTER23H, - CSR_MHPMCOUNTER24H, - CSR_MHPMCOUNTER25H, - CSR_MHPMCOUNTER26H, - CSR_MHPMCOUNTER27H, - CSR_MHPMCOUNTER28H, - CSR_MHPMCOUNTER29H, - CSR_MHPMCOUNTER30H, - CSR_MHPMCOUNTER31H, - CSR_MHPMEVENT3, - CSR_MHPMEVENT4, - CSR_MHPMEVENT5, - CSR_MHPMEVENT6, - CSR_MHPMEVENT7, - CSR_MHPMEVENT8, - CSR_MHPMEVENT9, - CSR_MHPMEVENT10, - CSR_MHPMEVENT11, - CSR_MHPMEVENT12, - CSR_MHPMEVENT13, - CSR_MHPMEVENT14, - CSR_MHPMEVENT15, - CSR_MHPMEVENT16, - CSR_MHPMEVENT17, - CSR_MHPMEVENT18, - CSR_MHPMEVENT19, - CSR_MHPMEVENT20, - CSR_MHPMEVENT21, - CSR_MHPMEVENT22, - CSR_MHPMEVENT23, - CSR_MHPMEVENT24, - CSR_MHPMEVENT25, - CSR_MHPMEVENT26, - CSR_MHPMEVENT27, - CSR_MHPMEVENT28, - CSR_MHPMEVENT29, - CSR_MHPMEVENT30, - CSR_MHPMEVENT31, - CSR_TSELECT, - CSR_TDATA1, - CSR_TDATA2, - CSR_TDATA3, - CSR_DCSR, - CSR_DPC, - CSR_DSCRATCH, - CSR_HSTATUS, - CSR_HEDELEG, - CSR_HIDELEG, - CSR_HIE, - CSR_HCOUNTEREN, - CSR_HTVAL, - CSR_HIP, - CSR_HTINST, - CSR_HGATP, - CSR_MBASE, - CSR_MBOUND, - CSR_MIBASE, - CSR_MIBOUND, - CSR_MDBASE, - CSR_MDBOUND, - CSR_MUCOUNTEREN, - CSR_MSCOUNTEREN, - CSR_MHCOUNTEREN, -}; - int riscv_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) { RISCVCPU *cpu = RISCV_CPU(cs); @@ -315,11 +65,11 @@ static int riscv_gdb_get_fpu(CPURISCVState *env, GByteArray *buf, int n) target_ulong val = 0; int result; /* - * CSR_FFLAGS is at index 8 in csr_register, and gdb says it is FP + * CSR_FFLAGS is at index 1 in csr_register, and gdb says it is FP * register 33, so we recalculate the map index. * This also works for CSR_FRM and CSR_FCSR. */ - result = riscv_csrrw_debug(env, n - 33 + csr_register_map[8], &val, + result = riscv_csrrw_debug(env, n - 32, &val, 0, 0); if (result == 0) { return gdb_get_regl(buf, val); @@ -338,11 +88,11 @@ static int riscv_gdb_set_fpu(CPURISCVState *env, uint8_t *mem_buf, int n) target_ulong val = ldtul_p(mem_buf); int result; /* - * CSR_FFLAGS is at index 8 in csr_register, and gdb says it is FP + * CSR_FFLAGS is at index 1 in csr_register, and gdb says it is FP * register 33, so we recalculate the map index. * This also works for CSR_FRM and CSR_FCSR. */ - result = riscv_csrrw_debug(env, n - 33 + csr_register_map[8], NULL, + result = riscv_csrrw_debug(env, n - 32, NULL, val, -1); if (result == 0) { return sizeof(target_ulong); @@ -353,11 +103,11 @@ static int riscv_gdb_set_fpu(CPURISCVState *env, uint8_t *mem_buf, int n) static int riscv_gdb_get_csr(CPURISCVState *env, GByteArray *buf, int n) { - if (n < ARRAY_SIZE(csr_register_map)) { + if (n < CSR_TABLE_SIZE) { target_ulong val = 0; int result; - result = riscv_csrrw_debug(env, csr_register_map[n], &val, 0, 0); + result = riscv_csrrw_debug(env, n, &val, 0, 0); if (result == 0) { return gdb_get_regl(buf, val); } @@ -367,11 +117,11 @@ static int riscv_gdb_get_csr(CPURISCVState *env, GByteArray *buf, int n) static int riscv_gdb_set_csr(CPURISCVState *env, uint8_t *mem_buf, int n) { - if (n < ARRAY_SIZE(csr_register_map)) { + if (n < CSR_TABLE_SIZE) { target_ulong val = ldtul_p(mem_buf); int result; - result = riscv_csrrw_debug(env, csr_register_map[n], NULL, val, -1); + result = riscv_csrrw_debug(env, n, NULL, val, -1); if (result == 0) { return sizeof(target_ulong); } @@ -405,6 +155,38 @@ static int riscv_gdb_set_virtual(CPURISCVState *cs, uint8_t *mem_buf, int n) return 0; } +static int riscv_gen_dynamic_csr_xml(CPUState *cs, int base_reg) +{ + RISCVCPU *cpu = RISCV_CPU(cs); + CPURISCVState *env = &cpu->env; + GString *s = g_string_new(NULL); + riscv_csr_predicate_fn predicate; + int bitsize = riscv_cpu_is_32bit(env) ? 32 : 64; + int i; + + g_string_printf(s, "<?xml version=\"1.0\"?>"); + g_string_append_printf(s, "<!DOCTYPE feature SYSTEM \"gdb-target.dtd\">"); + g_string_append_printf(s, "<feature name=\"org.gnu.gdb.riscv.csr\">"); + + for (i = 0; i < CSR_TABLE_SIZE; i++) { + predicate = csr_ops[i].predicate; + if (predicate && !predicate(env, i)) { + if (csr_ops[i].name) { + g_string_append_printf(s, "<reg name=\"%s\"", csr_ops[i].name); + } else { + g_string_append_printf(s, "<reg name=\"csr%03x\"", i); + } + g_string_append_printf(s, " bitsize=\"%d\"", bitsize); + g_string_append_printf(s, " regnum=\"%d\"/>", base_reg + i); + } + } + + g_string_append_printf(s, "</feature>"); + + cpu->dyn_csr_xml = g_string_free(s, false); + return CSR_TABLE_SIZE; +} + void riscv_cpu_register_gdb_regs_for_features(CPUState *cs) { RISCVCPU *cpu = RISCV_CPU(cs); @@ -417,16 +199,14 @@ void riscv_cpu_register_gdb_regs_for_features(CPUState *cs) 36, "riscv-32bit-fpu.xml", 0); } #if defined(TARGET_RISCV32) - gdb_register_coprocessor(cs, riscv_gdb_get_csr, riscv_gdb_set_csr, - 240, "riscv-32bit-csr.xml", 0); - gdb_register_coprocessor(cs, riscv_gdb_get_virtual, riscv_gdb_set_virtual, 1, "riscv-32bit-virtual.xml", 0); #elif defined(TARGET_RISCV64) - gdb_register_coprocessor(cs, riscv_gdb_get_csr, riscv_gdb_set_csr, - 240, "riscv-64bit-csr.xml", 0); - gdb_register_coprocessor(cs, riscv_gdb_get_virtual, riscv_gdb_set_virtual, 1, "riscv-64bit-virtual.xml", 0); #endif + + gdb_register_coprocessor(cs, riscv_gdb_get_csr, riscv_gdb_set_csr, + riscv_gen_dynamic_csr_xml(cs, cs->gdb_num_regs), + "riscv-csr.xml", 0); } |