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Removed block of assembly in favor of C code. TODO: Look at assembly and compiler -O options to avoid assembly.

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This commit is contained in:
Jared Boone
2012-10-10 16:17:02 -07:00
parent 0253642b2e
commit 693e61b31c
1 changed files with 9 additions and 28 deletions
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37
firmware/usb_performance/usb_performance.c
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@ -235,34 +235,15 @@ bool usb_set_configuration(
void sgpio_irqhandler() {
SGPIO_CLR_STATUS_1 = 0xFFFFFFFF;
uint32_t* const p32 = &usb_bulk_buffer[usb_bulk_buffer_offset];
volatile const uint32_t* const sgpio_reg_ss_base = SGPIO_PORT_BASE + 0x100;
__asm__(
"ldr r0, [%[sgpio_reg_ss_base], #0]\n\t" // Slice A -> p_local[7]
"ldr r1, [%[sgpio_reg_ss_base], #32]\n\t" // Slice I -> p_local[6]
"ldr r2, [%[sgpio_reg_ss_base], #16]\n\t" // Slice E -> p_local[5]
"ldr r3, [%[sgpio_reg_ss_base], #36]\n\t" // Slice J -> p_local[4]
"str r0, [%[p], #28]\n\t"
"str r1, [%[p], #24]\n\t"
"str r2, [%[p], #20]\n\t"
"str r3, [%[p], #16]\n\t"
"ldr r0, [%[sgpio_reg_ss_base], #8]\n\t" // Slice C -> p_local[3]
"ldr r1, [%[sgpio_reg_ss_base], #40]\n\t" // Slice K -> p_local[2]
"ldr r2, [%[sgpio_reg_ss_base], #20]\n\t" // Slice F -> p_local[1]
"ldr r3, [%[sgpio_reg_ss_base], #44]\n\t" // Slice L -> p_local[0]
"str r0, [%[p], #12]\n\t"
"str r1, [%[p], #8]\n\t"
"str r2, [%[p], #4]\n\t"
"str r3, [%[p], #0]\n\t"
:
: [sgpio_reg_ss_base] "l" (sgpio_reg_ss_base),
[p] "l" (p32)
: "r0", "r1", "r2", "r3"
);
uint32_t* const p = (uint32_t*)&usb_bulk_buffer[usb_bulk_buffer_offset];
p[7] = SGPIO_REG_SS(SGPIO_SLICE_A);
p[6] = SGPIO_REG_SS(SGPIO_SLICE_I);
p[5] = SGPIO_REG_SS(SGPIO_SLICE_E);
p[4] = SGPIO_REG_SS(SGPIO_SLICE_J);
p[3] = SGPIO_REG_SS(SGPIO_SLICE_C);
p[2] = SGPIO_REG_SS(SGPIO_SLICE_K);
p[1] = SGPIO_REG_SS(SGPIO_SLICE_F);
p[0] = SGPIO_REG_SS(SGPIO_SLICE_L);
usb_bulk_buffer_offset = (usb_bulk_buffer_offset + 32) & usb_bulk_buffer_mask;
}