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https://git.checksum.fail/alec/erythros
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a322c06850
At boot time, we preallocate 32MB of RAM to reuse for all malloc() requests by stbtt_RenderText(), which should be more than enough for the primary use case (browsing web pages).
32 lines
481 B
HolyC
32 lines
481 B
HolyC
U64 stbtt_heap = MAlloc(1048576 * 32);
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U64 stbtt_pos = 0;
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U64 @stbtt_malloc(I64 size)
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{
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//"stbtt_malloc(%d)\n", size;
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U64 ptr = stbtt_heap + stbtt_pos;
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stbtt_pos += size;
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return ptr;
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}
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U0 @stbtt_free(U8* ptr)
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{
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//"stbtt_free(0x%08x)\n", ptr;
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}
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U0 _Z15truetype_malloci()
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{
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PUSH_SYSV_REGS
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GET_SYSV_ARGS
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@stbtt_malloc(p0);
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POP_SYSV_REGS
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}
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U0 _Z13truetype_freePv()
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{
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PUSH_SYSV_REGS
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GET_SYSV_ARGS
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@stbtt_free(p0);
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POP_SYSV_REGS
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}
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