Module Name: src
Committed By: thorpej
Date: Sun Nov 21 23:34:44 UTC 2021
Modified Files:
src/sys/lib/libunwind: Registers.hpp
Log Message:
Teach the LLVM-derived unwinder about the alternate DWARF pseudo-register
that GCC defines for the PC / return address. This is simply an alias for
the same internal PC register number.
To generate a diff of this commit:
cvs rdiff -u -r1.33 -r1.34 src/sys/lib/libunwind/Registers.hpp
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/lib/libunwind/Registers.hpp
diff -u src/sys/lib/libunwind/Registers.hpp:1.33 src/sys/lib/libunwind/Registers.hpp:1.34
--- src/sys/lib/libunwind/Registers.hpp:1.33 Sun Nov 21 21:15:17 2021
+++ src/sys/lib/libunwind/Registers.hpp Sun Nov 21 23:34:44 2021
@@ -561,6 +561,9 @@ enum {
DWARF_M68K_FP0 = 16,
DWARF_M68K_FP7 = 23,
DWARF_M68K_PC = 24,
+ // DWARF pseudo-register that is an alternate that may be used
+ // for the return address.
+ DWARF_M68K_ALT_PC = 25,
REGNO_M68K_A0 = 0,
REGNO_M68K_A7 = 7,
@@ -589,7 +592,7 @@ public:
return REGNO_M68K_D0 + (num - DWARF_M68K_D0);
if (num >= DWARF_M68K_FP0 && num <= DWARF_M68K_FP7)
return REGNO_M68K_FP0 + (num - DWARF_M68K_FP0);
- if (num == DWARF_M68K_PC)
+ if (num == DWARF_M68K_PC || num == DWARF_M68K_ALT_PC)
return REGNO_M68K_PC;
return LAST_REGISTER + 1;
}
