evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Blackfin arch: Allow ptrace to peek and poke application data in L1 data SRAM.

Browse source 
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Jie Zhang 2008-07-15 16:15:40 +08:00 • committed by Bryan Wu
parent 2cfebf2bce
commit 6546eae4fd
1 changed files with 28 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
arch/blackfin/kernel/ptrace.c
View file

@ -219,6 +219,20 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
safe_dma_memcpy (&tmp, (const void *)(addr + add), sizeof(tmp)); safe_dma_memcpy (&tmp, (const void *)(addr + add), sizeof(tmp));
copied = sizeof(tmp); copied = sizeof(tmp);
} else } else
#endif
#if L1_DATA_A_LENGTH != 0
if (addr + add >= L1_DATA_A_START
&& addr + add + sizeof(tmp) <= L1_DATA_A_START + L1_DATA_A_LENGTH) {
memcpy(&tmp, (const void *)(addr + add), sizeof(tmp));
copied = sizeof(tmp);
} else
#endif
#if L1_DATA_B_LENGTH != 0
if (addr + add >= L1_DATA_B_START
&& addr + add + sizeof(tmp) <= L1_DATA_B_START + L1_DATA_B_LENGTH) {
memcpy(&tmp, (const void *)(addr + add), sizeof(tmp));
copied = sizeof(tmp);
} else
#endif #endif
if (addr + add >= FIXED_CODE_START if (addr + add >= FIXED_CODE_START
&& addr + add + sizeof(tmp) <= FIXED_CODE_END) { && addr + add + sizeof(tmp) <= FIXED_CODE_END) {
@ -289,6 +303,20 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
safe_dma_memcpy ((void *)(addr + add), &data, sizeof(data)); safe_dma_memcpy ((void *)(addr + add), &data, sizeof(data));
copied = sizeof(data); copied = sizeof(data);
} else } else
#endif
#if L1_DATA_A_LENGTH != 0
if (addr + add >= L1_DATA_A_START
&& addr + add + sizeof(data) <= L1_DATA_A_START + L1_DATA_A_LENGTH) {
memcpy((void *)(addr + add), &data, sizeof(data));
copied = sizeof(data);
} else
#endif
#if L1_DATA_B_LENGTH != 0
if (addr + add >= L1_DATA_B_START
&& addr + add + sizeof(data) <= L1_DATA_B_START + L1_DATA_B_LENGTH) {
memcpy((void *)(addr + add), &data, sizeof(data));
copied = sizeof(data);
} else
#endif #endif
if (addr + add >= FIXED_CODE_START if (addr + add >= FIXED_CODE_START
&& addr + add + sizeof(data) <= FIXED_CODE_END) { && addr + add + sizeof(data) <= FIXED_CODE_END) {