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Revert "xen/riscv: introduce decode_cause() stuff"
This reverts commit 22e71609ad,
which breaks both release and randconfig builds.
This commit is contained in:
Jan Beulich committed
1 parent
22e71609ad
commit
2909596927
1 file changed
+1
-83
+1
-83
@@ -4,92 +4,10 @@
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*
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* RISC-V Trap handlers
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*/
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#include <xen/lib.h>
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#include <asm/csr.h>
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#include <asm/early_printk.h>
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#include <asm/processor.h>
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#include <asm/traps.h>
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static const char *decode_trap_cause(unsigned long cause)
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{
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static const char *const trap_causes[] = {
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[CAUSE_MISALIGNED_FETCH] = "Instruction Address Misaligned",
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[CAUSE_FETCH_ACCESS] = "Instruction Access Fault",
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[CAUSE_ILLEGAL_INSTRUCTION] = "Illegal Instruction",
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[CAUSE_BREAKPOINT] = "Breakpoint",
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[CAUSE_MISALIGNED_LOAD] = "Load Address Misaligned",
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[CAUSE_LOAD_ACCESS] = "Load Access Fault",
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[CAUSE_MISALIGNED_STORE] = "Store/AMO Address Misaligned",
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[CAUSE_STORE_ACCESS] = "Store/AMO Access Fault",
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[CAUSE_USER_ECALL] = "Environment Call from U-Mode",
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[CAUSE_SUPERVISOR_ECALL] = "Environment Call from S-Mode",
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[CAUSE_MACHINE_ECALL] = "Environment Call from M-Mode",
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[CAUSE_FETCH_PAGE_FAULT] = "Instruction Page Fault",
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[CAUSE_LOAD_PAGE_FAULT] = "Load Page Fault",
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[CAUSE_STORE_PAGE_FAULT] = "Store/AMO Page Fault",
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[CAUSE_FETCH_GUEST_PAGE_FAULT] = "Instruction Guest Page Fault",
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[CAUSE_LOAD_GUEST_PAGE_FAULT] = "Load Guest Page Fault",
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[CAUSE_VIRTUAL_INST_FAULT] = "Virtualized Instruction Fault",
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[CAUSE_STORE_GUEST_PAGE_FAULT] = "Guest Store/AMO Page Fault",
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};
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if ( cause < ARRAY_SIZE(trap_causes) && trap_causes[cause] )
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return trap_causes[cause];
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return "UNKNOWN";
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}
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static const char *decode_reserved_interrupt_cause(unsigned long irq_cause)
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{
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switch ( irq_cause )
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{
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case IRQ_M_SOFT:
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return "M-mode Software Interrupt";
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case IRQ_M_TIMER:
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return "M-mode Timer Interrupt";
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case IRQ_M_EXT:
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return "M-mode External Interrupt";
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default:
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return "UNKNOWN IRQ type";
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}
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}
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static const char *decode_interrupt_cause(unsigned long cause)
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{
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unsigned long irq_cause = cause & ~CAUSE_IRQ_FLAG;
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switch ( irq_cause )
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{
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case IRQ_S_SOFT:
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return "Supervisor Software Interrupt";
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case IRQ_S_TIMER:
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return "Supervisor Timer Interrupt";
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case IRQ_S_EXT:
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return "Supervisor External Interrupt";
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default:
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return decode_reserved_interrupt_cause(irq_cause);
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}
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}
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static const char *decode_cause(unsigned long cause)
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{
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if ( cause & CAUSE_IRQ_FLAG )
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return decode_interrupt_cause(cause);
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return decode_trap_cause(cause);
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}
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static void do_unexpected_trap(const struct cpu_user_regs *regs)
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{
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unsigned long cause = csr_read(CSR_SCAUSE);
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printk("Unhandled exception: %s\n", decode_cause(cause));
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die();
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}
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void do_trap(struct cpu_user_regs *cpu_regs)
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{
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do_unexpected_trap(cpu_regs);
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die();
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}
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