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| author | cognet <cognet@FreeBSD.org> | 2004-11-20 16:52:10 +0000 |
|---|---|---|
| committer | cognet <cognet@FreeBSD.org> | 2004-11-20 16:52:10 +0000 |
| commit | 75354c7e52dc0f482ed3b77840e339ca9b478f51 (patch) | |
| tree | 65d0ea876a97c633458ca53e65120dde16a5cd48 /sys/arm/include | |
| parent | c2bbd5fdeb4509ccc5f9da044dee45d30c218a88 (diff) | |
| download | FreeBSD-src-75354c7e52dc0f482ed3b77840e339ca9b478f51.zip FreeBSD-src-75354c7e52dc0f482ed3b77840e339ca9b478f51.tar.gz | |
Implement enough to be able to enter and leave DDB.
Diffstat (limited to 'sys/arm/include')
| -rw-r--r-- | sys/arm/include/cpufunc.h | 1 | ||||
| -rw-r--r-- | sys/arm/include/db_machdep.h | 22 |
2 files changed, 20 insertions, 3 deletions
diff --git a/sys/arm/include/cpufunc.h b/sys/arm/include/cpufunc.h index a558b39..d1b5786 100644 --- a/sys/arm/include/cpufunc.h +++ b/sys/arm/include/cpufunc.h @@ -53,6 +53,7 @@ static __inline void breakpoint(void) { + __asm(".word 0xe7ffffff"); } struct cpu_functions { diff --git a/sys/arm/include/db_machdep.h b/sys/arm/include/db_machdep.h index e0b255d..f40daa5 100644 --- a/sys/arm/include/db_machdep.h +++ b/sys/arm/include/db_machdep.h @@ -47,7 +47,7 @@ typedef int db_expr_t; #define BKPT_SET(inst) (BKPT_INST) #define BKPT_SKIP do { \ - kdb_frame->tf_pc -= BKPT_SIZE; \ + kdb_frame->tf_pc += BKPT_SIZE; \ } while (0) #define db_clear_single_step(regs) @@ -56,9 +56,25 @@ typedef int db_expr_t; #define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT) #define IS_WATCHPOINT_TRAP(type, code) (0) + #define inst_trap_return(ins) (0) -#define inst_return(ins) (0) -#define inst_call(ins) (0) +/* ldmxx reg, {..., pc} + 01800000 stack mode + 000f0000 register + 0000ffff register list */ +/* mov pc, reg + 0000000f register */ +#define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \ + ((ins) & 0x0ff0fff0) == 0x01a0f000) +/* bl ... + 00ffffff offset>>2 */ +#define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000) +/* b ... + 00ffffff offset>>2 */ +/* ldr pc, [pc, reg, lsl #2] + 0000000f register */ + + #define inst_load(ins) (0) #define inst_store(ins) (0) |
