From: Rune Holm <rune.holm@gmail.com>
Date: Sun, 20 Jun 2021 16:12:09 +0000 (+0200)
Subject: step 1: add a state parameter to all opcode functions
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=18cba7ddc6d8b268f5749bf3ba8cf3cbd0d226b2;p=pistorm

step 1: add a state parameter to all opcode functions
---

diff --git a/m68k_in.c b/m68k_in.c
index ec2614f..cb5190e 100644
--- a/m68k_in.c
+++ b/m68k_in.c
@@ -112,7 +112,9 @@ M68KMAKE_PROTOTYPE_FOOTER
 /* Build the opcode handler table */
 void m68ki_build_opcode_table(void);
 
-extern void (*m68ki_instruction_jump_table[0x10000])(void); /* opcode handler jump table */
+struct m68ki_cpu_core;
+
+extern void (*m68ki_instruction_jump_table[0x10000])(struct m68ki_cpu_core *state); /* opcode handler jump table */
 extern unsigned char m68ki_cycles[][0x10000];
 
 
@@ -136,13 +138,13 @@ M68KMAKE_TABLE_HEADER
 
 #define NUM_CPU_TYPES 5
 
-void  (*m68ki_instruction_jump_table[0x10000])(void); /* opcode handler jump table */
+void  (*m68ki_instruction_jump_table[0x10000])(m68ki_cpu_core *state); /* opcode handler jump table */
 unsigned char m68ki_cycles[NUM_CPU_TYPES][0x10000]; /* Cycles used by CPU type */
 
 /* This is used to generate the opcode handler jump table */
 typedef struct
 {
-	void (*opcode_handler)(void);        /* handler function */
+	void (*opcode_handler)(m68ki_cpu_core *state);        /* handler function */
 	unsigned int  mask;                  /* mask on opcode */
 	unsigned int  match;                 /* what to match after masking */
 	unsigned char cycles[NUM_CPU_TYPES]; /* cycles each cpu type takes */
diff --git a/m68kcpu.c b/m68kcpu.c
index b91be0a..fb66609 100644
--- a/m68kcpu.c
+++ b/m68kcpu.c
@@ -42,7 +42,6 @@ extern void m68040_fpu_op0(void);
 extern void m68040_fpu_op1(void);
 extern void m68851_mmu_ops();
 extern unsigned char m68ki_cycles[][0x10000];
-extern void (*m68ki_instruction_jump_table[0x10000])(void); /* opcode handler jump table */
 extern void m68ki_build_opcode_table(void);
 
 #include "m68kops.h"
@@ -1012,7 +1011,7 @@ int m68k_execute(int num_cycles)
 
 			/* Read an instruction and call its handler */
 			REG_IR = m68ki_read_imm_16();
-			m68ki_instruction_jump_table[REG_IR]();
+			m68ki_instruction_jump_table[REG_IR](&m68ki_cpu);
 			USE_CYCLES(CYC_INSTRUCTION[REG_IR]);
 
 			/* Trace m68k_exception, if necessary */
diff --git a/m68kcpu.h b/m68kcpu.h
index b5b9197..e93c3d4 100644
--- a/m68kcpu.h
+++ b/m68kcpu.h
@@ -946,7 +946,7 @@ typedef struct
 
 
 
-typedef struct
+typedef struct m68ki_cpu_core
 {
 	uint cpu_type;     /* CPU Type: 68000, 68008, 68010, 68EC020, 68020, 68EC030, 68030, 68EC040, or 68040 */
 	uint dar[16];      /* Data and Address Registers */
diff --git a/m68kmake.c b/m68kmake.c
index adadc36..3e5a5c1 100644
--- a/m68kmake.c
+++ b/m68kmake.c
@@ -785,7 +785,7 @@ void get_base_name(char* base_name, opcode_struct* op)
 /* Write the name of an opcode handler function */
 void write_function_name(FILE* filep, char* base_name)
 {
-	fprintf(filep, "static void %s(void)\n", base_name);
+	fprintf(filep, "static void %s(m68ki_cpu_core *state)\n", base_name);
 }
 
 void add_opcode_output_table_entry(opcode_struct* op, char* name)