diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-22 19:37:50 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-04-03 13:22:20 +0300 |
| commit | c426810fcf9f96e3b43d16039e41ecb959f6dc29 (patch) | |
| tree | 6ca27a8b83199fec5a113400c3f93dc5fc2273aa /arch/powerpc/net/bpf_jit.h | |
| parent | 4ea76e90a97d22f86adbb10044d29d919e620f2e (diff) | |
| download | linux-c426810fcf9f96e3b43d16039e41ecb959f6dc29.tar.xz | |
powerpc/bpf: Change values of SEEN_ flags
Because PPC32 will use more non volatile registers,
move SEEN_ flags to positions 0-2 which corresponds to special
registers.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/608faa1dc3ecfead649e15392abd07b00313d2ba.1616430991.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/net/bpf_jit.h')
| -rw-r--r-- | arch/powerpc/net/bpf_jit.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h index b34abfce15a6..fb4656986fb9 100644 --- a/arch/powerpc/net/bpf_jit.h +++ b/arch/powerpc/net/bpf_jit.h @@ -108,18 +108,18 @@ static inline bool is_nearbranch(int offset) #define COND_LT (CR0_LT | COND_CMP_TRUE) #define COND_LE (CR0_GT | COND_CMP_FALSE) -#define SEEN_FUNC 0x1000 /* might call external helpers */ -#define SEEN_STACK 0x2000 /* uses BPF stack */ -#define SEEN_TAILCALL 0x4000 /* uses tail calls */ +#define SEEN_FUNC 0x20000000 /* might call external helpers */ +#define SEEN_STACK 0x40000000 /* uses BPF stack */ +#define SEEN_TAILCALL 0x80000000 /* uses tail calls */ struct codegen_context { /* * This is used to track register usage as well * as calls to external helpers. * - register usage is tracked with corresponding - * bits (r3-r10 and r27-r31) + * bits (r3-r31) * - rest of the bits can be used to track other - * things -- for now, we use bits 16 to 23 + * things -- for now, we use bits 0 to 2 * encoded in SEEN_* macros above */ unsigned int seen; |