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| author | Namhyung Kim <namhyung@gmail.com> | 2010-10-27 15:34:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:03:12 -0700 |
| commit | a9384e23ab19eba0dedb861ebcba805b98a3b7a5 (patch) | |
| tree | 306969d7845d13bbc16dad4c668f14cb58e3024f /arch/sparc/kernel | |
| parent | 9e1cb20619d8037248b6a776f777600c3584a8d5 (diff) | |
| download | linux-a9384e23ab19eba0dedb861ebcba805b98a3b7a5.tar.gz | |
ptrace: cleanup arch_ptrace() on sparc
Factor out struct fps and remove redundant castings. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/ptrace_32.c | 54 | ||||
| -rw-r--r-- | arch/sparc/kernel/ptrace_64.c | 8 |
2 files changed, 24 insertions, 38 deletions
diff --git a/arch/sparc/kernel/ptrace_32.c b/arch/sparc/kernel/ptrace_32.c index e08ba4a46acd..27b9e93d0121 100644 --- a/arch/sparc/kernel/ptrace_32.c +++ b/arch/sparc/kernel/ptrace_32.c @@ -323,19 +323,35 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task) return &user_sparc32_view; } +struct fps { + unsigned long regs[32]; + unsigned long fsr; + unsigned long flags; + unsigned long extra; + unsigned long fpqd; + struct fq { + unsigned long *insnaddr; + unsigned long insn; + } fpq[16]; +}; + long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4]; + void __user *addr2p; const struct user_regset_view *view; + struct pt_regs __user *pregs; + struct fps __user *fps; int ret; view = task_user_regset_view(current); + addr2p = (void __user *) addr2; + pregs = (struct pt_regs __user *) addr; + fps = (struct fps __user *) addr; switch(request) { case PTRACE_GETREGS: { - struct pt_regs __user *pregs = (struct pt_regs __user *) addr; - ret = copy_regset_to_user(child, view, REGSET_GENERAL, 32 * sizeof(u32), 4 * sizeof(u32), @@ -349,8 +365,6 @@ long arch_ptrace(struct task_struct *child, long request, } case PTRACE_SETREGS: { - struct pt_regs __user *pregs = (struct pt_regs __user *) addr; - ret = copy_regset_from_user(child, view, REGSET_GENERAL, 32 * sizeof(u32), 4 * sizeof(u32), @@ -364,19 +378,6 @@ long arch_ptrace(struct task_struct *child, long request, } case PTRACE_GETFPREGS: { - struct fps { - unsigned long regs[32]; - unsigned long fsr; - unsigned long flags; - unsigned long extra; - unsigned long fpqd; - struct fq { - unsigned long *insnaddr; - unsigned long insn; - } fpq[16]; - }; - struct fps __user *fps = (struct fps __user *) addr; - ret = copy_regset_to_user(child, view, REGSET_FP, 0 * sizeof(u32), 32 * sizeof(u32), @@ -398,19 +399,6 @@ long arch_ptrace(struct task_struct *child, long request, } case PTRACE_SETFPREGS: { - struct fps { - unsigned long regs[32]; - unsigned long fsr; - unsigned long flags; - unsigned long extra; - unsigned long fpqd; - struct fq { - unsigned long *insnaddr; - unsigned long insn; - } fpq[16]; - }; - struct fps __user *fps = (struct fps __user *) addr; - ret = copy_regset_from_user(child, view, REGSET_FP, 0 * sizeof(u32), 32 * sizeof(u32), @@ -425,8 +413,7 @@ long arch_ptrace(struct task_struct *child, long request, case PTRACE_READTEXT: case PTRACE_READDATA: - ret = ptrace_readdata(child, addr, - (void __user *) addr2, data); + ret = ptrace_readdata(child, addr, addr2p, data); if (ret == data) ret = 0; @@ -436,8 +423,7 @@ long arch_ptrace(struct task_struct *child, long request, case PTRACE_WRITETEXT: case PTRACE_WRITEDATA: - ret = ptrace_writedata(child, (void __user *) addr2, - addr, data); + ret = ptrace_writedata(child, addr2p, addr, data); if (ret == data) ret = 0; diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index d9db5a4dfef9..9ccc812bc09e 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -976,10 +976,12 @@ long arch_ptrace(struct task_struct *child, long request, unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4]; struct pt_regs __user *pregs; struct fps __user *fps; + void __user *addr2p; int ret; pregs = (struct pt_regs __user *) addr; fps = (struct fps __user *) addr; + addr2p = (void __user *) addr2; switch (request) { case PTRACE_PEEKUSR: @@ -1030,8 +1032,7 @@ long arch_ptrace(struct task_struct *child, long request, case PTRACE_READTEXT: case PTRACE_READDATA: - ret = ptrace_readdata(child, addr, - (char __user *)addr2, data); + ret = ptrace_readdata(child, addr, addr2p, data); if (ret == data) ret = 0; else if (ret >= 0) @@ -1040,8 +1041,7 @@ long arch_ptrace(struct task_struct *child, long request, case PTRACE_WRITETEXT: case PTRACE_WRITEDATA: - ret = ptrace_writedata(child, (char __user *) addr2, - addr, data); + ret = ptrace_writedata(child, addr2p, addr, data); if (ret == data) ret = 0; else if (ret >= 0) |