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| author |   David S. Miller <davem@davemloft.net> | 2008-04-29 02:38:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-29 02:38:50 -0700 |
| commit | e2fdd7fd99dd68b77caaf2a2272b75b5da890de7 (patch) | |
| tree | d2b6d3a9b50e4d2ced793430d2b1414f790666a3 /include/asm-sparc64 | |
| parent | kgdbts: Sparc needs sstep emulation. (diff) | |
| download | linux-dev-e2fdd7fd99dd68b77caaf2a2272b75b5da890de7.tar.xz linux-dev-e2fdd7fd99dd68b77caaf2a2272b75b5da890de7.zip | |
sparc: Add kgdb support.
Current limitations:
1) On SMP single stepping has some fundamental issues,
shared with other sw single-step architectures such
as mips and arm.
2) On 32-bit sparc we don't support SMP kgdb yet. That
requires some reworking of the IPI mechanisms and
infrastructure on that platform.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64')
| -rw-r--r-- | include/asm-sparc64/kgdb.h | 1 | ||||
| -rw-r--r-- | include/asm-sparc64/system.h | 5 | ||||
| -rw-r--r-- | include/asm-sparc64/ttable.h | 6 |
3 files changed, 10 insertions, 2 deletions
diff --git a/include/asm-sparc64/kgdb.h b/include/asm-sparc64/kgdb.h new file mode 100644 index 000000000000..aa6532fd3a13 --- /dev/null +++ b/include/asm-sparc64/kgdb.h @@ -0,0 +1 @@ +#include <asm-sparc/kgdb.h> diff --git a/include/asm-sparc64/system.h b/include/asm-sparc64/system.h index 53eae091a171..6897ac31be41 100644 --- a/include/asm-sparc64/system.h +++ b/include/asm-sparc64/system.h @@ -180,12 +180,13 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \ "ldx [%%sp + 2047 + 0x70], %%i6\n\t" \ "ldx [%%sp + 2047 + 0x78], %%i7\n\t" \ "ldx [%%g6 + %9], %%g4\n\t" \ - "brz,pt %%o7, 1f\n\t" \ + "brz,pt %%o7, switch_to_pc\n\t" \ " mov %%g7, %0\n\t" \ "sethi %%hi(ret_from_syscall), %%g1\n\t" \ "jmpl %%g1 + %%lo(ret_from_syscall), %%g0\n\t" \ " nop\n\t" \ - "1:\n\t" \ + ".globl switch_to_pc\n\t" \ + "switch_to_pc:\n\t" \ : "=&r" (last), "=r" (current), "=r" (current_thread_info_reg), \ "=r" (__local_per_cpu_offset) \ : "0" (task_thread_info(next)), \ diff --git a/include/asm-sparc64/ttable.h b/include/asm-sparc64/ttable.h index d3cc4eff39a6..1b55538b944f 100644 --- a/include/asm-sparc64/ttable.h +++ b/include/asm-sparc64/ttable.h @@ -175,6 +175,12 @@ #define KPROBES_TRAP(lvl) TRAP_ARG(bad_trap, lvl) #endif +#ifdef CONFIG_KGDB +#define KGDB_TRAP(lvl) TRAP_IRQ(kgdb_trap, lvl) +#else +#define KGDB_TRAP(lvl) TRAP_ARG(bad_trap, lvl) +#endif + #define SUN4V_ITSB_MISS \ ldxa [%g0] ASI_SCRATCHPAD, %g2; \ ldx [%g2 + HV_FAULT_I_ADDR_OFFSET], %g4; \ |