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save state to file in C attempt

This commit is contained in:
franchiopin 2024-05-21 21:33:41 +01:00
parent edda7eefb6
commit 5451101f75
3 changed files with 20 additions and 12 deletions
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3
.vscode/settings.json vendored
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@ -2,6 +2,7 @@
"makefile.makefilePath": "", "makefile.makefilePath": "",
"files.associations": { "files.associations": {
"platform-nspire.h": "c", "platform-nspire.h": "c",
"*.inc": "c" "*.inc": "c",
"stdint.h": "c"
} }
} }

6
source/main.S
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@ -396,8 +396,10 @@ save_state:
mov r0, saved_state_cpu_status ldr r0, =saved_state_cpu_status
str r1, saved_state_cpu_cpsr ldr r1, =saved_state_cpu_cpsr
sub r2, r9, #s_SIZE
bl write_save_state bl write_save_state
ldr lr, saved_state_cpu_status+56 // subroutine return ldr lr, saved_state_cpu_status+56 // subroutine return

23
source/save_state.c
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@ -4,22 +4,27 @@
#include <stdio.h> #include <stdio.h>
#define s_SIZE 0x4600; #define s_SIZE 0x4600
void write_save_state(uint32_t saved_state_cpu_status_addr, uint32_t saved_state_cpu_cpsr); const size_t cpu_status_size = (15 * sizeof(uint16_t));
void write_save_state(uint32_t saved_state_cpu_status_addr, uint32_t saved_state_cpu_cpsr){ void write_save_state(uint8_t* saved_state_cpu_status_addr, uint8_t* saved_state_cpu_cpsr, void* state_ds_addr);
size_t lenght = s_SIZE;
size_t data_size = s_SIZE + sizeof(uint32_t); void write_save_state(uint8_t* saved_state_cpu_status_addr, uint8_t* saved_state_cpu_cpsr, void* state_ds_addr){
uint32_t *data = malloc(data_size); size_t data_size = cpu_status_size + sizeof(uint8_t) + s_SIZE;
uint8_t *data = malloc(data_size);
uint8_t *data_start = data;
memcpy(data, saved_state_cpu_status_addr, lenght); memcpy(data, state_ds_addr, s_SIZE);
data += s_SIZE;
data[data_size-1] = saved_state_cpu_cpsr; memcpy(data, saved_state_cpu_status_addr, cpu_status_size);
data += cpu_status_size;
memcpy(data, saved_state_cpu_cpsr, 1);
FILE* savefile = fopen("/documents/ndless/test.tns", "wb"); FILE* savefile = fopen("/documents/ndless/test.tns", "wb");
fwrite(data, data_size, 1, savefile); fwrite(data_start, data_size, 1, savefile);
fclose(savefile); fclose(savefile);
} }