diff options
| -rw-r--r-- | README.md | 40 | ||||
| -rw-r--r-- | src/kernel/graphics/vesa.c | 6 | ||||
| -rw-r--r-- | src/kernel/paging/kheap.c | 6 |
3 files changed, 30 insertions, 22 deletions
@@ -2,26 +2,36 @@ <p align="center"> <i>„A lightweight unix-like operating system“</i> <br><br> - <img src="https://img.shields.io/travis/marvinborner/Melvix?style=for-the-badge" /> + <a href="https://travis-ci.com/marvinborner/Melvix" target="_blank"> + <img src="https://img.shields.io/travis/marvinborner/Melvix?style=for-the-badge" /> + </a> + <a href="https://app.codacy.com/manual/marvin-borner/Melvix/dashboard" target="_blank"> + <img src="https://img.shields.io/codacy/grade/4ae29e218d7c439eaa549ea828ffcaac?style=for-the-badge" /> + </a> </p> ## Build * Use any system running GNU/Linux (Successfully tried building on Debian, Arch Linux and even OpenBSD) + * Install build dependencies (package names may vary depending on your operating system) - * binutils - * gcc - * make - * bison - * flex - * gmp - * mpc - * mpfr - * texinfo - * curl - * nasm - * grub - * qemu + * binutils + * gcc + * make + * bison + * flex + * gmp + * mpc + * mpfr + * texinfo + * curl + * nasm + * grub + * qemu + * Build a cross compiler using `make cross` -* Run `make build` + +* Run `make build` + * Test Melvix in QEMU (opens after `make test`) + * Optional: Flash the built ISO to a USB/Floppy/CD drive using `sudo dd if=./build/melvix.iso of=/dev/sdX bs=4M oflag=sync` diff --git a/src/kernel/graphics/vesa.c b/src/kernel/graphics/vesa.c index 03c189f..cc9dd97 100644 --- a/src/kernel/graphics/vesa.c +++ b/src/kernel/graphics/vesa.c @@ -67,10 +67,8 @@ struct vbe_mode_info *vbe_set_mode(unsigned short mode) { return vbe_info; } else { switch_to_vga(); + return ((void *) 0); } - - struct vbe_mode_info vbe_info; - return &vbe_info; } void set_optimal_resolution() { @@ -83,7 +81,7 @@ void set_optimal_resolution() { regs16_t regs; regs.ax = 0x4F00; regs.es = 0; - regs.di = info; + regs.di = (unsigned short) info; int32(0x10, ®s); if (regs.ax != 0x004F || strcmp(info->signature, "VESA") != 0) { diff --git a/src/kernel/paging/kheap.c b/src/kernel/paging/kheap.c index 94aa547..e4f3d20 100644 --- a/src/kernel/paging/kheap.c +++ b/src/kernel/paging/kheap.c @@ -55,7 +55,7 @@ uint32_t kmalloc(uint32_t sz) { static void expand(uint32_t new_size, heap_t *heap) { assert(new_size > heap->end_address - heap->start_address); - if (new_size & 0xFFFFF000 != 0) { + if ((new_size & 0xFFFFF000) != 0) { new_size &= 0xFFFFF000; new_size += 0x1000; } @@ -100,7 +100,7 @@ static int find_smallest_hole(uint32_t size, unsigned char page_align, heap_t *h if (page_align > 0) { uint32_t location = (uint32_t) header; int offset = 0; - if ((location + sizeof(header_t)) & 0xFFFFF000 != 0) + if (((location + sizeof(header_t)) & 0xFFFFF000) != 0) offset = 0x1000 - (location + sizeof(header_t)) % 0x1000; int hole_size = (int) header->size - offset; @@ -128,7 +128,7 @@ heap_t *create_heap(uint32_t start, uint32_t end_addr, uint32_t max, unsigned ch heap->index = place_ordered_array((void *) start, HEAP_INDEX_SIZE, &header_t_less_than); start += sizeof(type_t) * HEAP_INDEX_SIZE; - if (start & 0xFFFFF000 != 0) { + if ((start & 0xFFFFF000) != 0) { start &= 0xFFFFF000; start += 0x1000; } |