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- Fix backtrace for MIPS64 platform

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This commit is contained in:
Oleksandr Tymoshenko 2011-11-28 19:48:04 +00:00
parent 447fdbd073
commit 2b8895cd74
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=228091
1 changed files with 5 additions and 2 deletions
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7
sys/mips/mips/db_trace.c
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@ -30,7 +30,7 @@ extern char edata[];
/*
* A function using a stack frame has the following instruction as the first
* one: addiu sp,sp,-<frame_size>
* one: [d]addiu sp,sp,-<frame_size>
*
* We make use of this to detect starting address of a function. This works
* better than using 'j ra' instruction to signify end of the previous
@ -39,7 +39,8 @@ extern char edata[];
*
* XXX the abi does not require that the addiu instruction be the first one.
*/
#define MIPS_START_OF_FUNCTION(ins) (((ins) & 0xffff8000) == 0x27bd8000)
#define MIPS_START_OF_FUNCTION(ins) ((((ins) & 0xffff8000) == 0x27bd8000) \
|| (((ins) & 0xffff8000) == 0x67bd8000))
/*
* MIPS ABI 3.0 requires that all functions return using the 'j ra' instruction
@ -329,6 +330,8 @@ stacktrace_subr(register_t pc, register_t sp, register_t ra,
case OP_ADDI:
case OP_ADDIU:
case OP_DADDI:
case OP_DADDIU:
/* look for stack pointer adjustment */
if (i.IType.rs != 29 || i.IType.rt != 29)
break;