From c88c629438188f55dbb75bcfa13a525da35a995d Mon Sep 17 00:00:00 2001 From: Cristian Dumitrescu Date: Thu, 1 Oct 2020 11:19:43 +0100 Subject: [PATCH] pipeline: introduce SWX subtract instruction The sub (i.e. subtract) instruction source can be header field (H), meta-data field (M), extern object (E) or function (F) mailbox field, table entry action data field (T) or immediate value (I). The destination is HMEF. Signed-off-by: Cristian Dumitrescu --- lib/librte_pipeline/rte_swx_pipeline.c | 168 +++++++++++++++++++++++++ 1 file changed, 168 insertions(+) diff --git a/lib/librte_pipeline/rte_swx_pipeline.c b/lib/librte_pipeline/rte_swx_pipeline.c index 6eee52f243..245621dc3d 100644 --- a/lib/librte_pipeline/rte_swx_pipeline.c +++ b/lib/librte_pipeline/rte_swx_pipeline.c @@ -278,6 +278,17 @@ enum instruction_type { INSTR_ALU_ADD_HH, /* dst = H, src = H */ INSTR_ALU_ADD_MI, /* dst = MEF, src = I */ INSTR_ALU_ADD_HI, /* dst = H, src = I */ + + /* sub dst src + * dst -= src + * dst = HMEF, src = HMEFTI + */ + INSTR_ALU_SUB, /* dst = MEF, src = MEF */ + INSTR_ALU_SUB_MH, /* dst = MEF, src = H */ + INSTR_ALU_SUB_HM, /* dst = H, src = MEF */ + INSTR_ALU_SUB_HH, /* dst = H, src = H */ + INSTR_ALU_SUB_MI, /* dst = MEF, src = I */ + INSTR_ALU_SUB_HI, /* dst = H, src = I */ }; struct instr_operand { @@ -2916,6 +2927,58 @@ instr_alu_add_translate(struct rte_swx_pipeline *p, return 0; } +static int +instr_alu_sub_translate(struct rte_swx_pipeline *p, + struct action *action, + char **tokens, + int n_tokens, + struct instruction *instr, + struct instruction_data *data __rte_unused) +{ + char *dst = tokens[1], *src = tokens[2]; + struct field *fdst, *fsrc; + uint32_t dst_struct_id, src_struct_id, src_val; + + CHECK(n_tokens == 3, EINVAL); + + fdst = struct_field_parse(p, NULL, dst, &dst_struct_id); + CHECK(fdst, EINVAL); + + /* SUB, SUB_HM, SUB_MH, SUB_HH. */ + fsrc = struct_field_parse(p, action, src, &src_struct_id); + if (fsrc) { + instr->type = INSTR_ALU_SUB; + if (dst[0] == 'h' && src[0] == 'm') + instr->type = INSTR_ALU_SUB_HM; + if (dst[0] == 'm' && src[0] == 'h') + instr->type = INSTR_ALU_SUB_MH; + if (dst[0] == 'h' && src[0] == 'h') + instr->type = INSTR_ALU_SUB_HH; + + instr->alu.dst.struct_id = (uint8_t)dst_struct_id; + instr->alu.dst.n_bits = fdst->n_bits; + instr->alu.dst.offset = fdst->offset / 8; + instr->alu.src.struct_id = (uint8_t)src_struct_id; + instr->alu.src.n_bits = fsrc->n_bits; + instr->alu.src.offset = fsrc->offset / 8; + return 0; + } + + /* SUB_MI, SUB_HI. */ + src_val = strtoul(src, &src, 0); + CHECK(!src[0], EINVAL); + + instr->type = INSTR_ALU_SUB_MI; + if (dst[0] == 'h') + instr->type = INSTR_ALU_SUB_HI; + + instr->alu.dst.struct_id = (uint8_t)dst_struct_id; + instr->alu.dst.n_bits = fdst->n_bits; + instr->alu.dst.offset = fdst->offset / 8; + instr->alu.src_val = (uint32_t)src_val; + return 0; +} + static inline void instr_alu_add_exec(struct rte_swx_pipeline *p) { @@ -3006,6 +3069,96 @@ instr_alu_add_hi_exec(struct rte_swx_pipeline *p) thread_ip_inc(p); } +static inline void +instr_alu_sub_exec(struct rte_swx_pipeline *p) +{ + struct thread *t = &p->threads[p->thread_id]; + struct instruction *ip = t->ip; + + TRACE("[Thread %2u] sub\n", p->thread_id); + + /* Structs. */ + ALU(t, ip, -); + + /* Thread. */ + thread_ip_inc(p); +} + +static inline void +instr_alu_sub_mh_exec(struct rte_swx_pipeline *p) +{ + struct thread *t = &p->threads[p->thread_id]; + struct instruction *ip = t->ip; + + TRACE("[Thread %2u] sub (mh)\n", p->thread_id); + + /* Structs. */ + ALU_MH(t, ip, -); + + /* Thread. */ + thread_ip_inc(p); +} + +static inline void +instr_alu_sub_hm_exec(struct rte_swx_pipeline *p) +{ + struct thread *t = &p->threads[p->thread_id]; + struct instruction *ip = t->ip; + + TRACE("[Thread %2u] sub (hm)\n", p->thread_id); + + /* Structs. */ + ALU_HM(t, ip, -); + + /* Thread. */ + thread_ip_inc(p); +} + +static inline void +instr_alu_sub_hh_exec(struct rte_swx_pipeline *p) +{ + struct thread *t = &p->threads[p->thread_id]; + struct instruction *ip = t->ip; + + TRACE("[Thread %2u] sub (hh)\n", p->thread_id); + + /* Structs. */ + ALU_HH(t, ip, -); + + /* Thread. */ + thread_ip_inc(p); +} + +static inline void +instr_alu_sub_mi_exec(struct rte_swx_pipeline *p) +{ + struct thread *t = &p->threads[p->thread_id]; + struct instruction *ip = t->ip; + + TRACE("[Thread %2u] sub (mi)\n", p->thread_id); + + /* Structs. */ + ALU_MI(t, ip, -); + + /* Thread. */ + thread_ip_inc(p); +} + +static inline void +instr_alu_sub_hi_exec(struct rte_swx_pipeline *p) +{ + struct thread *t = &p->threads[p->thread_id]; + struct instruction *ip = t->ip; + + TRACE("[Thread %2u] sub (hi)\n", p->thread_id); + + /* Structs. */ + ALU_HI(t, ip, -); + + /* Thread. */ + thread_ip_inc(p); +} + #define RTE_SWX_INSTRUCTION_TOKENS_MAX 16 static int @@ -3115,6 +3268,14 @@ instr_translate(struct rte_swx_pipeline *p, instr, data); + if (!strcmp(tokens[tpos], "sub")) + return instr_alu_sub_translate(p, + action, + &tokens[tpos], + n_tokens - tpos, + instr, + data); + CHECK(0, EINVAL); } @@ -3279,6 +3440,13 @@ static instr_exec_t instruction_table[] = { [INSTR_ALU_ADD_HH] = instr_alu_add_hh_exec, [INSTR_ALU_ADD_MI] = instr_alu_add_mi_exec, [INSTR_ALU_ADD_HI] = instr_alu_add_hi_exec, + + [INSTR_ALU_SUB] = instr_alu_sub_exec, + [INSTR_ALU_SUB_MH] = instr_alu_sub_mh_exec, + [INSTR_ALU_SUB_HM] = instr_alu_sub_hm_exec, + [INSTR_ALU_SUB_HH] = instr_alu_sub_hh_exec, + [INSTR_ALU_SUB_MI] = instr_alu_sub_mi_exec, + [INSTR_ALU_SUB_HI] = instr_alu_sub_hi_exec, }; static inline void -- 2.20.1