decodetree: Add DisasContext argument to !function expanders

This does require adjusting all existing users.

Backports commit 451e4ffdb0003ab5ed0d98bd37b385c076aba183 from qemu

qemu/scripts/decodetree.py

@@ -390,7 +390,7 @@ class FunctionField:
         return self.func + '(' + str(self.base) + ')'
 
     def str_extract(self):
-        return self.func + '(' + self.base.str_extract() + ')'
+        return self.func + '(ctx, ' + self.base.str_extract() + ')'
 
     def __eq__(self, other):
         return self.func == other.func and self.base == other.base
@@ -452,7 +452,7 @@ class Format(General):
         return decode_function + '_extract_' + self.name
 
     def output_extract(self):
-        output('static void ', self.extract_name(), '(',
+        output('static void ', self.extract_name(), '(DisasContext *ctx, ',
                self.base.struct_name(), ' *a, ', insntype, ' insn)\n{\n')
         for n, f in self.fields.items():
             output('    a->', n, ' = ', f.str_extract(), ';\n')
@@ -477,7 +477,8 @@ class Pattern(General):
         arg = self.base.base.name
         output(ind, '/* ', self.file, ':', str(self.lineno), ' */\n')
         if not extracted:
-            output(ind, self.base.extract_name(), '(&u.f_', arg, ', insn);\n')
+            output(ind, self.base.extract_name(),
+                   '(ctx, &u.f_', arg, ', insn);\n')
         for n, f in self.fields.items():
             output(ind, 'u.f_', arg, '.', n, ' = ', f.str_extract(), ';\n')
         output(ind, 'if (', translate_prefix, '_', self.name,
@@ -1030,7 +1031,7 @@ class Tree:
         # extract the fields now.
         if not extracted and self.base:
             output(ind, self.base.extract_name(),
-                   '(&u.f_', self.base.base.name, ', insn);\n')
+                   '(ctx, &u.f_', self.base.base.name, ', insn);\n')
             extracted = True
 
         # Attempt to aid the compiler in producing compact switch statements.

qemu/target/arm/translate-sve.c

@@ -51,35 +51,35 @@ typedef void gen_helper_gvec_mem_scatter(TCGContext *, TCGv_env, TCGv_ptr, TCGv_
 /* See e.g. ASR (immediate, predicated).
  * Returns -1 for unallocated encoding; diagnose later.
  */
-static int tszimm_esz(int x)
+static int tszimm_esz(DisasContext *s, int x)
 {
     x >>= 3;  /* discard imm3 */
     return 31 - clz32(x);
 }
 
-static int tszimm_shr(int x)
+static int tszimm_shr(DisasContext *s, int x)
 {
-    return (16 << tszimm_esz(x)) - x;
+    return (16 << tszimm_esz(s, x)) - x;
 }
 
 /* See e.g. LSL (immediate, predicated).  */
-static int tszimm_shl(int x)
+static int tszimm_shl(DisasContext *s, int x)
 {
-    return x - (8 << tszimm_esz(x));
+    return x - (8 << tszimm_esz(s, x));
 }
 
-static inline int plus1(int x)
+static inline int plus1(DisasContext *s, int x)
 {
     return x + 1;
 }
 
 /* The SH bit is in bit 8.  Extract the low 8 and shift.  */
-static inline int expand_imm_sh8s(int x)
+static inline int expand_imm_sh8s(DisasContext *s, int x)
 {
     return (int8_t)x << (x & 0x100 ? 8 : 0);
 }
 
-static inline int expand_imm_sh8u(int x)
+static inline int expand_imm_sh8u(DisasContext *s, int x)
 {
     return (uint8_t)x << (x & 0x100 ? 8 : 0);
 }
@@ -87,7 +87,7 @@ static inline int expand_imm_sh8u(int x)
 /* Convert a 2-bit memory size (msz) to a 4-bit data type (dtype)
  * with unsigned data.  C.f. SVE Memory Contiguous Load Group.
  */
-static inline int msz_dtype(int msz)
+static inline int msz_dtype(DisasContext *s, int msz)
 {
     static const uint8_t dtype[4] = { 0, 5, 10, 15 };
     return dtype[msz];
@@ -5005,7 +5005,7 @@ static void do_ldrq(DisasContext *s, int zt, int pg, TCGv_i64 addr, int msz)
     int desc, poff;
 
     /* Load the first quadword using the normal predicated load helpers.  */
-    desc = sve_memopidx(s, msz_dtype(msz));
+    desc = sve_memopidx(s, msz_dtype(s, msz));
     desc |= zt << MEMOPIDX_SHIFT;
     desc = simd_desc(16, 16, desc);
     t_desc = tcg_const_i32(tcg_ctx, desc);
@@ -5190,7 +5190,7 @@ static void do_st_zpa(DisasContext *s, int zt, int pg, TCGv_i64 addr,
         fn = fn_multiple[be][nreg - 1][msz];
     }
     assert(fn != NULL);
-    do_mem_zpa(s, zt, pg, addr, msz_dtype(msz), fn);
+    do_mem_zpa(s, zt, pg, addr, msz_dtype(s, msz), fn);
 }
 
 static bool trans_ST_zprr(DisasContext *s, arg_rprr_store *a)
@@ -5242,7 +5242,7 @@ static void do_mem_zpz(DisasContext *s, int zt, int pg, int zm,
     TCGv_i32 t_desc;
     int desc;
 
-    desc = sve_memopidx(s, msz_dtype(msz));
+    desc = sve_memopidx(s, msz_dtype(s, msz));
     desc |= scale << MEMOPIDX_SHIFT;
     desc = simd_desc(vsz, vsz, desc);
     t_desc = tcg_const_i32(tcg_ctx, desc);

qemu/target/riscv/insn_trans/trans_rvc.inc.c

@@ -48,13 +48,13 @@ static bool trans_c_flw_ld(DisasContext *ctx, arg_c_flw_ld *a)
     REQUIRE_EXT(ctx, RVF);
 
     arg_c_lw tmp;
-    decode_insn16_extract_cl_w(&tmp, ctx->opcode);
+    decode_insn16_extract_cl_w(ctx, &tmp, ctx->opcode);
     arg_flw arg = { .rd = tmp.rd, .rs1 = tmp.rs1, .imm = tmp.uimm };
     return trans_flw(ctx, &arg);
 #else
     /* C.LD ( RV64C/RV128C-only ) */
     arg_c_fld tmp;
-    decode_insn16_extract_cl_d(&tmp, ctx->opcode);
+    decode_insn16_extract_cl_d(ctx, &tmp, ctx->opcode);
     arg_ld arg = { .rd = tmp.rd, .rs1 = tmp.rs1, .imm = tmp.uimm };
     return trans_ld(ctx, &arg);
 #endif
@@ -80,13 +80,13 @@ static bool trans_c_fsw_sd(DisasContext *ctx, arg_c_fsw_sd *a)
     REQUIRE_EXT(ctx, RVF);
 
     arg_c_sw tmp;
-    decode_insn16_extract_cs_w(&tmp, ctx->opcode);
+    decode_insn16_extract_cs_w(ctx, &tmp, ctx->opcode);
     arg_fsw arg = { .rs1 = tmp.rs1, .rs2 = tmp.rs2, .imm = tmp.uimm };
     return trans_fsw(ctx, &arg);
 #else
     /* C.SD ( RV64C/RV128C-only ) */
     arg_c_fsd tmp;
-    decode_insn16_extract_cs_d(&tmp, ctx->opcode);
+    decode_insn16_extract_cs_d(ctx, &tmp, ctx->opcode);
     arg_sd arg = { .rs1 = tmp.rs1, .rs2 = tmp.rs2, .imm = tmp.uimm };
     return trans_sd(ctx, &arg);
 #endif
@@ -107,7 +107,7 @@ static bool trans_c_jal_addiw(DisasContext *ctx, arg_c_jal_addiw *a)
 #ifdef TARGET_RISCV32
     /* C.JAL */
     arg_c_j tmp;
-    decode_insn16_extract_cj(&tmp, ctx->opcode);
+    decode_insn16_extract_cj(ctx, &tmp, ctx->opcode);
     arg_jal arg = { .rd = 1, .imm = tmp.imm };
     return trans_jal(ctx, &arg);
 #else

qemu/target/riscv/translate.c

@@ -536,7 +536,7 @@ static void decode_RV32_64C(DisasContext *ctx)
 }
 
 #define EX_SH(amount) \
-    static int ex_shift_##amount(int imm) \
+    static int ex_shift_##amount(DisasContext *ctx, int imm) \
     {                                         \
         return imm << amount;                 \
     }
@@ -552,7 +552,7 @@ EX_SH(12)
     }                              \
 } while (0)
 
-static int ex_rvc_register(int reg)
+static int ex_rvc_register(DisasContext *ctx, int reg)
 {
     return 8 + reg;
 }