os-k-team/kvisc
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julianb0 2019-06-20 12:58:24 +02:00
parent 054ce35bd0
commit d882e0362a
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2 changed files with 16 additions and 2 deletions
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4
ka/ABI
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@ -109,8 +109,8 @@ To the variadic function, argN can be accessed the following way:
mov reg, [rbp + N*8 + 16] mov reg, [rbp + N*8 + 16]
For instance: For instance:
mov rax, [rbp + 16] ; arg1 mov rax, [rbp + 16] ; arg0
mov rdx, [rbp + 24] ; arg2 mov rdx, [rbp + 24] ; arg1
It is recommended to use the reg+reg*imm16+imm16 memory format: It is recommended to use the reg+reg*imm16+imm16 memory format:
mov rax, [rbp + rcx * 8 + 16] ; accesses arg#rcx mov rax, [rbp + rcx * 8 + 16] ; accesses arg#rcx

14
vm/cn/console.c
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@ -114,6 +114,12 @@ void console_putat(ctx_t *ctx, char ch, int x, int y)
surf = TTF_RenderText_Solid(scr_font, scr_lines[y], scr_text_color); surf = TTF_RenderText_Solid(scr_font, scr_lines[y], scr_text_color);
if (!surf)
{
logerr("console_putat: couldn't render TTF font\n");
die(-1);
}
if (scr_texts[y]) if (scr_texts[y])
{ {
if (scr_rects[y]) if (scr_rects[y])
@ -128,10 +134,18 @@ void console_putat(ctx_t *ctx, char ch, int x, int y)
scr_texts[y] = SDL_CreateTextureFromSurface(scr_rend, surf); scr_texts[y] = SDL_CreateTextureFromSurface(scr_rend, surf);
scr_rects[y] = malloc(sizeof(SDL_Rect)); scr_rects[y] = malloc(sizeof(SDL_Rect));
if (scr_texts[y] == NULL)
{
logerr("console_putat: couldn't create texture from surface\n");
SDL_FreeSurface(surf);
die(-1);
}
if (scr_rects[y] == NULL) if (scr_rects[y] == NULL)
{ {
logerr("console_putat: not enough memory\n"); logerr("console_putat: not enough memory\n");
SDL_FreeSurface(surf); SDL_FreeSurface(surf);
SDL_DestroyTexture(scr_texts[y]);
die(-1); die(-1);
} }