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authorRichard Kuo <rkuo@codeaurora.org>2013-03-07 12:03:10 -0600
committerRichard Kuo <rkuo@codeaurora.org>2013-04-30 19:40:25 -0500
commit7777746c40876834c1527689336e43c8381b1921 (patch)
treeb3257768e29db418ab9292a4e9a27c56e1e88fed /arch/hexagon/include
parentf8722a4d5243e779d6795e2d775c9114c44a6c26 (diff)
downloadlinux-linaro-stable-7777746c40876834c1527689336e43c8381b1921.tar.gz
Hexagon: add support for single-stepping (v4+)
Hardware single-step is only available on v4 and later architectures. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Diffstat (limited to 'arch/hexagon/include')
-rw-r--r--arch/hexagon/include/uapi/asm/ptrace.h5
-rw-r--r--arch/hexagon/include/uapi/asm/registers.h3
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/hexagon/include/uapi/asm/ptrace.h b/arch/hexagon/include/uapi/asm/ptrace.h
index 1ffce0c6ee07..065e5b32313f 100644
--- a/arch/hexagon/include/uapi/asm/ptrace.h
+++ b/arch/hexagon/include/uapi/asm/ptrace.h
@@ -36,4 +36,9 @@ extern const char *regs_query_register_name(unsigned int offset);
((struct pt_regs *) \
((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
+#if CONFIG_HEXAGON_ARCH_VERSION >= 4
+#define arch_has_single_step() (1)
+#endif
+
+
#endif
diff --git a/arch/hexagon/include/uapi/asm/registers.h b/arch/hexagon/include/uapi/asm/registers.h
index 80504155ca3a..fcdb5f96a984 100644
--- a/arch/hexagon/include/uapi/asm/registers.h
+++ b/arch/hexagon/include/uapi/asm/registers.h
@@ -211,6 +211,9 @@ struct pt_regs {
#define pt_psp(regs) ((regs)->hvmer.vmpsp)
#define pt_badva(regs) ((regs)->hvmer.vmbadva)
+#define pt_set_singlestep(regs) ((regs)->hvmer.vmest |= (1<<HVM_VMEST_SS_SFT))
+#define pt_clr_singlestep(regs) ((regs)->hvmer.vmest &= ~(1<<HVM_VMEST_SS_SFT))
+
#define pt_set_rte_sp(regs, sp) do {\
pt_psp(regs) = (sp);\
(regs)->SP = (unsigned long) &((regs)->hvmer);\