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uxn
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Let us make a device page in shadow memory

This commit is contained in:
neauoire 2022-01-06 18:49:54 -08:00
parent a82f7d79f8
commit 28b9265042
4 changed files with 7 additions and 6 deletions
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4
src/uxn.c
View File

@ -108,7 +108,7 @@ err:
/* clang-format on */
int
uxn_boot(Uxn *u, Stack *wst, Stack *rst, Uint8 *memory)
uxn_boot(Uxn *u, Uint8 *ram, Uint8 *dev, Stack *wst, Stack *rst)
{
Uint32 i;
char *cptr = (char *)u;
@ -116,7 +116,7 @@ uxn_boot(Uxn *u, Stack *wst, Stack *rst, Uint8 *memory)
cptr[i] = 0x00;
u->wst = wst;
u->rst = rst;
u->ram = memory;
u->ram = ram;
return 1;
}

3
src/uxn.h
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@ -16,6 +16,7 @@ typedef signed short Sint16;
typedef unsigned int Uint32;
#define PAGE_PROGRAM 0x0100
#define PAGE_DEV 0xfd00
#define PAGE_WST 0xfe00
#define PAGE_RST 0xff00
@ -45,7 +46,7 @@ typedef struct Uxn {
Device dev[16];
} Uxn;
int uxn_boot(Uxn *u, Stack *wst, Stack *rst, Uint8 *memory);
int uxn_boot(Uxn *u, Uint8 *ram, Uint8 *dev, Stack *wst, Stack *rst);
int uxn_eval(Uxn *u, Uint16 pc);
int uxn_halt(Uxn *u, Uint8 error, Uint16 addr);
Device *uxn_port(Uxn *u, Uint8 id, Uint8 (*deifn)(Device *, Uint8), void (*deofn)(Device *, Uint8));

2
src/uxncli.c
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@ -143,7 +143,7 @@ main(int argc, char **argv)
shadow = (Uint8 *)calloc(0xffff, sizeof(Uint8));
memory = (Uint8 *)calloc(0xffff, sizeof(Uint8));
if(!uxn_boot(&u, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST), memory))
if(!uxn_boot(&u, memory, shadow + PAGE_DEV, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST)))
return error("Boot", "Failed");
/* system */ devsystem = uxn_port(&u, 0x0, system_dei, system_deo);

4
src/uxnemu.c
View File

@ -278,9 +278,9 @@ start(Uxn *u, char *rom)
memory = (Uint8 *)calloc(0xffff, sizeof(Uint8));
shadow = (Uint8 *)calloc(0xffff, sizeof(Uint8));
if(!uxn_boot(&hypervisor, (Stack *)(shadow + 0xfc00), (Stack *)(shadow + 0xfd00), shadow))
if(!uxn_boot(&hypervisor, shadow, shadow + PAGE_DEV, (Stack *)(shadow + 0xfb00), (Stack *)(shadow + 0xfc00)))
return error("Boot", "Failed to start uxn.");
if(!uxn_boot(u, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST), memory))
if(!uxn_boot(u, memory, shadow + PAGE_DEV, (Stack *)(shadow + PAGE_WST), (Stack *)(shadow + PAGE_RST)))
return error("Boot", "Failed to start uxn.");
if(!load(&hypervisor, "hypervisor.rom"))
error("Hypervisor", "No debugger found.");