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Code Issues Releases Wiki Activity

powerpc/bpf: Rename PPC_BL_ABS() to PPC_BL()

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PPC_BL_ABS() is just doing a relative branch with link. The name
suggests that it is for branching to an absolute address, which is
incorrect. Rename the macro to a more appropriate PPC_BL().

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f0e57b6c7a6ee40dba645535b70da46f46e8af5e.1644834730.git.naveen.n.rao@linux.vnet.ibm.com
This commit is contained in:
Naveen N. Rao 2022-02-14 16:11:44 +05:30 committed by Michael Ellerman
parent feb6307289
commit 74bbe3f084
2 changed files with 4 additions and 4 deletions
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6
arch/powerpc/net/bpf_jit.h
View file

@ -34,9 +34,9 @@
EMIT(PPC_RAW_BRANCH(offset)); \
} while (0)
/* blr; (unconditional 'branch' with link) to absolute address */
#define PPC_BL_ABS(dest) EMIT(PPC_INST_BL | \
(((dest) - (unsigned long)(image + ctx->idx)) & 0x03fffffc))
/* bl (unconditional 'branch' with link) */
#define PPC_BL(dest) EMIT(PPC_INST_BL | (((dest) - (unsigned long)(image + ctx->idx)) & 0x03fffffc))
/* "cond" here covers BO:BI fields. */
#define PPC_BCC_SHORT(cond, dest) \
do { \

2
arch/powerpc/net/bpf_jit_comp32.c
View file

@ -198,7 +198,7 @@ int bpf_jit_emit_func_call_rel(u32 *image, struct codegen_context *ctx, u64 func
s32 rel = (s32)func - (s32)(image + ctx->idx);
if (image && rel < 0x2000000 && rel >= -0x2000000) {
PPC_BL_ABS(func);
PPC_BL(func);
EMIT(PPC_RAW_NOP());
EMIT(PPC_RAW_NOP());
EMIT(PPC_RAW_NOP());