xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc: Use a macro for creating instructions from u32s

Browse Source 
In preparation for instructions having a more complex data type start
using a macro, ppc_inst(), for making an instruction out of a u32.  A
macro is used so that instructions can be used as initializer elements.
Currently this does nothing, but it will allow for creating a data type
that can represent prefixed instructions.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
[mpe: Change include guard to _ASM_POWERPC_INST_H]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-7-jniethe5@gmail.com
This commit is contained in:
Jordan Niethe
2020-05-06 13:40:26 +10:00
committed by Michael Ellerman
parent 7c95d8893f
commit 7534625128
24 changed files with 156 additions and 120 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/kernel/setup_32.c
View File

@@ -85,7 +85,7 @@ notrace void __init machine_init(u64 dt_ptr)
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
patch_instruction_site(&patch__memcpy_nocache, PPC_INST_NOP);
patch_instruction_site(&patch__memcpy_nocache, ppc_inst(PPC_INST_NOP));
create_cond_branch(&insn, addr, branch_target(addr), 0x820000);
patch_instruction(addr, insn); /* replace b by bne cr0 */