5:46 a.m.
Add support form printing out the registers from the dump file. We don't
take the registers directly from the ELF notes but instead use the version
we've saved into the machine_specific structure. If we don't do this,
we'd get misleading output when the number of ELF notes don't match the
number of online CPUs.
E.g. Without this patch:
crash> help -r
CPU 0:
R0: 0000000000000000 R1: 900000000026cd2c R2: 90000000013e8000
R3: 90000000013ebdf0 R4: 9000000005923878 R5: 0000000000000000
R6: 0000000000000001 R7: 7fffffffffffffff R8: 0000000000000003
R9: 9000000094f644a8 R10: ffffffffa9059289 R11: 0000000001167617
R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000168d9a
R15: 90000000017fd358 R16: 90000000013fe000 R17: 000001383a11ae73
R18: fffffffffffffff7 R19: 0000000000000000 R20: 0000000000000954
R21: 90000000002c65cc R22: 0000000000000000 R23: 90000000014168d0
R24: 0000000000000000 R25: 0000000000000004 R26: 90000000014169a8
R27: 0000000000000004 R28: 900000000150f596 R29: 9000000001257f18
R30: 0000000000000000 R31: 0000000000000000
CSR epc : 9000000005923878 CSR badv: 9000000000221620
CSR crmd: 000000b0 CSR prmd: 90000000014169a8
CSR ecfg: 00000000 CSR estat: 90000000014168d0
CSR eneu: 00000004
...
Co-developed-by: Youling Tang <tangyouling(a)loongson.cn>
Signed-off-by: Youling Tang <tangyouling(a)loongson.cn>
Signed-off-by: Ming Wang <wangming01(a)loongson.cn>
---
diskdump.c | 5 +++-
loongarch64.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
netdump.c | 4 ++-
3 files changed, 76 insertions(+), 2 deletions(-)
diff --git a/diskdump.c b/diskdump.c
index bec0d82..3ae7bf2 100644
--- a/diskdump.c
+++ b/diskdump.c
@@ -2648,6 +2648,9 @@ diskdump_display_regs(int cpu, FILE *ofp)
if (machine_type("MIPS64"))
mips64_display_regs_from_elf_notes(cpu, ofp);
+
+ if (machine_type("LOONGARCH64"))
+ loongarch64_display_regs_from_elf_notes(cpu, ofp);
}
void
@@ -2659,7 +2662,7 @@ dump_registers_for_compressed_kdump(void)
!(machine_type("X86") || machine_type("X86_64") ||
machine_type("ARM64") || machine_type("PPC64") ||
machine_type("MIPS") || machine_type("MIPS64") ||
- machine_type("RISCV64")))
+ machine_type("RISCV64") || machine_type("LOONGARCH64")))
error(FATAL, "-r option not supported for this dumpfile\n");
if (machine_type("ARM64") && (kt->cpus !=
dd->num_prstatus_notes))
diff --git a/loongarch64.c b/loongarch64.c
index 2624c9b..5c19933 100644
--- a/loongarch64.c
+++ b/loongarch64.c
@@ -1269,6 +1269,75 @@ loongarch64_init(int when)
void
loongarch64_display_regs_from_elf_notes(int cpu, FILE *ofp)
{
+ const struct machine_specific *ms = machdep->machspec;
+ struct loongarch64_pt_regs *regs;
+
+ if (!ms->crash_task_regs) {
+ error(INFO, "registers not collected for cpu %d\n", cpu);
+ return;
+ }
+
+ regs = &ms->crash_task_regs[cpu];
+ if (!regs->regs[LOONGARCH64_EF_SP] && !regs->csr_epc) {
+ error(INFO, "registers not collected for cpu %d\n", cpu);
+ return;
+ }
+
+ fprintf(ofp,
+ " R0: %016lx R1: %016lx R2: %016lx\n"
+ " R3: %016lx R4: %016lx R5: %016lx\n"
+ " R6: %016lx R7: %016lx R8: %016lx\n"
+ " R9: %016lx R10: %016lx R11: %016lx\n"
+ " R12: %016lx R13: %016lx R14: %016lx\n"
+ " R15: %016lx R16: %016lx R17: %016lx\n"
+ " R18: %016lx R19: %016lx R20: %016lx\n"
+ " R21: %016lx R22: %016lx R23: %016lx\n"
+ " R24: %016lx R25: %016lx R26: %016lx\n"
+ " R27: %016lx R28: %016lx R29: %016lx\n"
+ " R30: %016lx R31: %016lx\n"
+ " CSR epc : %016lx CSR badv: %016lx\n"
+ " CSR crmd: %08lx CSR prmd: %08lx\n"
+ " CSR ecfg: %08lx CSR estat: %08lx\n"
+ " CSR eneu: %08lx",
+ regs->regs[LOONGARCH64_EF_R0],
+ regs->regs[LOONGARCH64_EF_R0 + 1],
+ regs->regs[LOONGARCH64_EF_R0 + 2],
+ regs->regs[LOONGARCH64_EF_R0 + 3],
+ regs->regs[LOONGARCH64_EF_R0 + 4],
+ regs->regs[LOONGARCH64_EF_R0 + 5],
+ regs->regs[LOONGARCH64_EF_R0 + 6],
+ regs->regs[LOONGARCH64_EF_R0 + 7],
+ regs->regs[LOONGARCH64_EF_R0 + 8],
+ regs->regs[LOONGARCH64_EF_R0 + 9],
+ regs->regs[LOONGARCH64_EF_R0 + 10],
+ regs->regs[LOONGARCH64_EF_R0 + 11],
+ regs->regs[LOONGARCH64_EF_R0 + 12],
+ regs->regs[LOONGARCH64_EF_R0 + 13],
+ regs->regs[LOONGARCH64_EF_R0 + 14],
+ regs->regs[LOONGARCH64_EF_R0 + 15],
+ regs->regs[LOONGARCH64_EF_R0 + 16],
+ regs->regs[LOONGARCH64_EF_R0 + 17],
+ regs->regs[LOONGARCH64_EF_R0 + 18],
+ regs->regs[LOONGARCH64_EF_R0 + 19],
+ regs->regs[LOONGARCH64_EF_R0 + 20],
+ regs->regs[LOONGARCH64_EF_R0 + 21],
+ regs->regs[LOONGARCH64_EF_R0 + 22],
+ regs->regs[LOONGARCH64_EF_R0 + 23],
+ regs->regs[LOONGARCH64_EF_R0 + 24],
+ regs->regs[LOONGARCH64_EF_R0 + 25],
+ regs->regs[LOONGARCH64_EF_R0 + 26],
+ regs->regs[LOONGARCH64_EF_R0 + 27],
+ regs->regs[LOONGARCH64_EF_R0 + 28],
+ regs->regs[LOONGARCH64_EF_R0 + 29],
+ regs->regs[LOONGARCH64_EF_R0 + 30],
+ regs->regs[LOONGARCH64_EF_R0 + 31],
+ regs->csr_epc,
+ regs->csr_badvaddr,
+ regs->csr_crmd,
+ regs->csr_prmd,
+ regs->csr_ecfg,
+ regs->csr_estat,
+ regs->csr_euen);
}
#else /* !LOONGARCH64 */
diff --git a/netdump.c b/netdump.c
index dbcf253..b4e2a5c 100644
--- a/netdump.c
+++ b/netdump.c
@@ -2961,6 +2961,8 @@ display_regs_from_elf_notes(int cpu, FILE *ofp)
mips64_display_regs_from_elf_notes(cpu, ofp);
} else if (machine_type("RISCV64")) {
riscv64_display_regs_from_elf_notes(cpu, ofp);
+ } else if (machine_type("LOONGARCH64")) {
+ loongarch64_display_regs_from_elf_notes(cpu, ofp);
}
}
@@ -2972,7 +2974,7 @@ dump_registers_for_elf_dumpfiles(void)
if (!(machine_type("X86") || machine_type("X86_64") ||
machine_type("ARM64") || machine_type("PPC64") ||
machine_type("MIPS") || machine_type("MIPS64") ||
- machine_type("RISCV64")))
+ machine_type("RISCV64") || machine_type("LOONGARCH64")))
error(FATAL, "-r option not supported for this dumpfile\n");
if (NETDUMP_DUMPFILE()) {
--
2.39.2