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feat(buzbee): BUZBEE command tables now generated with bbmkcmds.c

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This commit is contained in:
Gale Misery Faraday
2025-10-01 17:24:32 -05:00
parent d7d8532021
commit eafc0ce98e
4 changed files with 77 additions and 41 deletions
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3
.gitignore vendored
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@@ -6,7 +6,8 @@
*.s19
build/
map.txt
bbhashtool
bbmkcmds
# Build system generated files
src/version.s
src/bbcmds.s

38
bbhashtool.c
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@@ -1,38 +0,0 @@
/* Generates "hashes" from ASCII strings to be used in BUZBEE */
#include <stdint.h>
#include <stdio.h>
const int CCH_CMD = 4;
int mkhash(const char pszCmd[]);
int main(void) {
/* Add your commands here to be hashed. Imprtant that they all be CCH_CMD
* chars long EXCLUDING the NUL terminator. */
char *ppszCmds[] = {
"CALL",
"EXEC",
"HELP",
"PEEK",
"POKE",
"SREC",
/* "BOOT", */
};
for (int iCmd = 0; iCmd < (sizeof(ppszCmds) / sizeof(char *)); iCmd++)
printf("BBC%s\n fcb $%.2X\n", ppszCmds[iCmd], mkhash(ppszCmds[iCmd]));
return 0;
}
int mkhash(const char pszCmd[]) {
uint8_t nhash = 0;
/* NOTE: Very important that condition is the length of the string MINUS the
* NUL terminator, in this case iChar < 4 */
for (int iChar = 0; iChar < CCH_CMD; iChar++)
nhash = nhash - pszCmd[iChar];
return nhash;
}

66
bbmkcmds.c Normal file
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@@ -0,0 +1,66 @@
/* Generates BUZBEE command data table asm file */
#include <stdint.h>
#include <stdio.h>
/* Length of commands in printable-char count (excluding NUL terminator). */
const int s_cchCmd = 4;
/* Add your commands here to be hashed. Imprtant that they all be CCH_CMD
* chars long EXCLUDING the NUL terminator. */
const char *s_ppszCmds[] = {
"CALL",
"EXEC",
"HELP",
"PEEK",
"POKE",
"SREC",
/* "BOOT", */
};
int mkHash(const char pszCmd[]);
int main(void) {
/* Emit file header */
puts("; CHIBI PC-09 -- BUZBEE -- Command Data\n\
; Copyright (c) 2025 Gale Faraday\n\
; Licensed under MIT\n\
\n\
; This file generated by bbmkcmds.c\n\
\n\
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\n\
;;\n\
;; BUZBEE Command Data\n\
;;\n\
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\n\
\n\
SECTION BBCMDS\n");
for (int iCmd = 0; iCmd < sizeof(s_ppszCmds) / sizeof(char *); iCmd++) {
const char *pszLabel = s_ppszCmds[iCmd];
printf(" EXPORT BBC%s\n", pszLabel);
}
/* Extra newline */
printf("\n");
/* Emit table data */
for (int iCmd = 0; iCmd < sizeof(s_ppszCmds) / sizeof(char *); iCmd++) {
const char *pszLabel = s_ppszCmds[iCmd];
uint8_t uHash = mkHash(s_ppszCmds[iCmd]);
printf("BBC%s\n fcb $%.2X\n", pszLabel, uHash);
}
return 0;
}
int mkHash(const char pszCmd[]) {
uint8_t nhash = 0;
/* NOTE: Very important that condition is the length of the string MINUS the
* NUL terminator, in this case iChar < 4 */
for (int iChar = 0; iChar < s_cchCmd; iChar++)
nhash = nhash - pszCmd[iChar];
return nhash;
}

11
makefile
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@@ -13,7 +13,7 @@ TARGREC := $(TARGET).s19
TARGROM := $(TARGET).bin
SRCDIR := src/
BUILDDIR := build/
GENS := $(SRCDIR)version.s
GENS := $(SRCDIR)version.s $(SRCDIR)bbcmds.s
SRCS := $(wildcard $(SRCDIR)*.s)
OBJS := $(patsubst $(SRCDIR)%.s,$(BUILDDIR)%.o,$(SRCS))
INCS := $(wildcard $(SRCDIR)*.inc)
@@ -48,11 +48,18 @@ $(OBJS): $(BUILDDIR)%.o : $(SRCDIR)%.s
-@mkdir -p $(BUILDDIR)
$(AS) $(ASFLAGS) -o $@ $<
# Pseudo target for generation step
generate: $(GENS)
$(GENS):
# Run generation scripts
$(GENS): bbmkcmds
./bbmkcmds > src/bbcmds.s
./genver.sh
# Build bbmkcmds, used to generate src/cmds.s
bbmkcmds: bbmkcmds.c
cc -o $@ $<
clean:
@echo 'Cleaning up intermediary files...'
@rm -rv $(TARGROM) $(TARGREC) map.txt $(BUILDDIR)