mirror of
https://github.com/RGBCube/serenity
synced 2025-07-26 00:57:36 +00:00
Kernel: Don't build with -mregparm=3
It was really confusing to have different calling conventions in kernel and userspace. Also this has prevented us from linking with libgcc.
This commit is contained in:
Andreas Kling
parent
01b21e5e05
commit
1c6f8d3cbd
6 changed files with 54 additions and 52 deletions
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@ -54,8 +54,9 @@ start:
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call init
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mov $exit_message, %eax
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pushl $exit_message
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call kprintf
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add $4, %esp
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cli
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@ -1,7 +1,7 @@
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#include "APIC.h"
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#include "Assertions.h"
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#include "IRQHandler.h"
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#include "PIC.h"
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#include "APIC.h"
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#include "Process.h"
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#include "Scheduler.h"
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#include <AK/Types.h>
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@ -62,35 +62,36 @@ asm(
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" add $0x4, %esp\n"
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" iret\n");
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#define EH_ENTRY(ec) \
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#define EH_ENTRY(ec) \
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extern "C" void exception_##ec##_handler(RegisterDump&); \
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extern "C" void exception_##ec##_entry(); \
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asm( \
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".globl exception_" #ec "_entry\n" \
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"exception_" #ec "_entry: \n" \
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" pusha\n" \
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" pushw %ds\n" \
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" pushw %es\n" \
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" pushw %fs\n" \
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" pushw %gs\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" popw %ds\n" \
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" popw %es\n" \
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" popw %fs\n" \
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" popw %gs\n" \
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" mov %esp, %eax\n" \
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" call exception_" #ec "_handler\n" \
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" popw %gs\n" \
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" popw %gs\n" \
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" popw %fs\n" \
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" popw %es\n" \
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" popw %ds\n" \
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" popa\n" \
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" add $0x4, %esp\n" \
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extern "C" void exception_##ec##_entry(); \
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asm( \
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".globl exception_" #ec "_entry\n" \
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"exception_" #ec "_entry: \n" \
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" pusha\n" \
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" pushw %ds\n" \
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" pushw %es\n" \
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" pushw %fs\n" \
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" pushw %gs\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" pushw %ss\n" \
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" popw %ds\n" \
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" popw %es\n" \
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" popw %fs\n" \
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" popw %gs\n" \
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" pushl %esp\n" \
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" call exception_" #ec "_handler\n" \
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" add $4, %esp\n" \
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" popw %gs\n" \
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" popw %gs\n" \
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" popw %fs\n" \
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" popw %es\n" \
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" popw %ds\n" \
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" popa\n" \
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" add $0x4, %esp\n" \
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" iret\n");
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#define EH_ENTRY_NO_CODE(ec) \
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@ -114,8 +115,9 @@ asm(
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" popw %es\n" \
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" popw %fs\n" \
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" popw %gs\n" \
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" mov %esp, %eax\n" \
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" pushl %esp\n" \
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" call exception_" #ec "_handler\n" \
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" add $4, %esp\n" \
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" popw %gs\n" \
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" popw %gs\n" \
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" popw %fs\n" \
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@ -265,10 +267,10 @@ void exception_14_handler(RegisterDump& regs)
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auto response = MM.handle_page_fault(PageFault(regs.exception_code, VirtualAddress(fault_address)));
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if (response == PageFaultResponse::ShouldCrash) {
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if(current->has_signal_handler(SIGSEGV)){
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current->send_urgent_signal_to_self(SIGSEGV);
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return;
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}
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if (current->has_signal_handler(SIGSEGV)) {
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current->send_urgent_signal_to_self(SIGSEGV);
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return;
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}
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kprintf("\033[31;1m%s(%u:%u) Unrecoverable page fault, %s address %p\033[0m\n",
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current->process().name().characters(),
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@ -301,7 +303,7 @@ void exception_14_handler(RegisterDump& regs)
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static void _exception##i() \
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{ \
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kprintf(msg "\n"); \
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u32 cr0, cr2, cr3, cr4; \
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u32 cr0, cr2, cr3, cr4; \
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asm("movl %%cr0, %%eax" \
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: "=a"(cr0)); \
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asm("movl %%cr2, %%eax" \
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@ -251,16 +251,15 @@ inline u32 read_fs_u32(u32 offset)
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u32 val;
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asm volatile(
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"movl %%fs:%a[off], %k[val]"
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: [val] "=r" (val)
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: [off] "ir" (offset));
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: [ val ] "=r"(val)
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: [ off ] "ir"(offset));
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return val;
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}
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inline void write_fs_u32(u32 offset, u32 val)
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{
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asm volatile(
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"movl %k[val], %%fs:%a[off]"
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:: [off] "ir" (offset), [val] "ir" (val)
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"movl %k[val], %%fs:%a[off]" ::[off] "ir"(offset), [ val ] "ir"(val)
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: "memory");
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}
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@ -383,7 +382,6 @@ struct [[gnu::packed]] RegisterDump
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u16 ss_if_crossRing;
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};
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struct [[gnu::aligned(16)]] FPUState
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{
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u8 buffer[512];
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@ -397,8 +395,8 @@ inline constexpr u32 page_base_of(u32 address)
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class CPUID {
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public:
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CPUID(u32 function) { asm volatile("cpuid"
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: "=a"(m_eax), "=b"(m_ebx), "=c"(m_ecx), "=d"(m_edx)
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: "a"(function), "c"(0)); }
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: "=a"(m_eax), "=b"(m_ebx), "=c"(m_ecx), "=d"(m_edx)
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: "a"(function), "c"(0)); }
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u32 eax() const { return m_eax; }
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u32 ebx() const { return m_ebx; }
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u32 ecx() const { return m_ecx; }
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@ -459,21 +457,20 @@ public:
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MSR(const MSR&) = delete;
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MSR& operator=(const MSR&) = delete;
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MSR(uint32_t msr):
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m_msr(msr)
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MSR(uint32_t msr)
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: m_msr(msr)
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{
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}
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void get(u32& low, u32& high)
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{
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asm volatile("rdmsr"
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: "=a"(low), "=d"(high)
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: "c"(m_msr));
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: "=a"(low), "=d"(high)
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: "c"(m_msr));
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}
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void set(u32 low, u32 high)
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{
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asm volatile("wrmsr"
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:: "a"(low), "d"(high), "c"(m_msr));
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asm volatile("wrmsr" ::"a"(low), "d"(high), "c"(m_msr));
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}
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};
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@ -27,8 +27,9 @@ asm(
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" popw %es\n"
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" popw %fs\n"
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" popw %gs\n"
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" mov %esp, %eax\n"
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" pushl %esp\n"
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" call timer_interrupt_handler\n"
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" add $4, %esp\n"
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" popw %gs\n"
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" popw %gs\n"
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" popw %fs\n"
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@ -107,7 +107,7 @@ CXX_OBJS = $(KERNEL_OBJS) $(VFS_OBJS) $(AK_OBJS)
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OBJS = $(CXX_OBJS) Arch/i386/Boot/boot.ao
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KERNEL = kernel
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CXXFLAGS += -ffreestanding -mregparm=3 -mno-80387 -mno-mmx -mno-sse -mno-sse2
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CXXFLAGS += -ffreestanding -mno-80387 -mno-mmx -mno-sse -mno-sse2
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CXXFLAGS += -nostdlib -nostdinc -nostdinc++
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CXXFLAGS += -I../Toolchain/Local/i686-pc-serenity/include/c++/8.3.0/
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CXXFLAGS += -I../Toolchain/Local/i686-pc-serenity/include/c++/8.3.0/i686-pc-serenity/
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@ -28,8 +28,9 @@ asm(
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" popw %es\n"
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" popw %fs\n"
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" popw %gs\n"
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" mov %esp, %eax\n"
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" pushl %esp\n"
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" call syscall_trap_entry\n"
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" add $4, %esp\n"
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" popw %gs\n"
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" popw %gs\n"
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" popw %fs\n"
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